Add extracted source directory and README navigation

extracted-source/node_modules/undici/lib/web/fetch/body.js

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+'use strict'
+
+const util = require('../../core/util')
+const {
+  ReadableStreamFrom,
+  isBlobLike,
+  isReadableStreamLike,
+  readableStreamClose,
+  createDeferredPromise,
+  fullyReadBody,
+  extractMimeType,
+  utf8DecodeBytes
+} = require('./util')
+const { FormData } = require('./formdata')
+const { kState } = require('./symbols')
+const { webidl } = require('./webidl')
+const { Blob } = require('node:buffer')
+const assert = require('node:assert')
+const { isErrored, isDisturbed } = require('node:stream')
+const { isArrayBuffer } = require('node:util/types')
+const { serializeAMimeType } = require('./data-url')
+const { multipartFormDataParser } = require('./formdata-parser')
+let random
+
+try {
+  const crypto = require('node:crypto')
+  random = (max) => crypto.randomInt(0, max)
+} catch {
+  random = (max) => Math.floor(Math.random(max))
+}
+
+const textEncoder = new TextEncoder()
+function noop () {}
+
+const hasFinalizationRegistry = globalThis.FinalizationRegistry && process.version.indexOf('v18') !== 0
+let streamRegistry
+
+if (hasFinalizationRegistry) {
+  streamRegistry = new FinalizationRegistry((weakRef) => {
+    const stream = weakRef.deref()
+    if (stream && !stream.locked && !isDisturbed(stream) && !isErrored(stream)) {
+      stream.cancel('Response object has been garbage collected').catch(noop)
+    }
+  })
+}
+
+// https://fetch.spec.whatwg.org/#concept-bodyinit-extract
+function extractBody (object, keepalive = false) {
+  // 1. Let stream be null.
+  let stream = null
+
+  // 2. If object is a ReadableStream object, then set stream to object.
+  if (object instanceof ReadableStream) {
+    stream = object
+  } else if (isBlobLike(object)) {
+    // 3. Otherwise, if object is a Blob object, set stream to the
+    //    result of running object’s get stream.
+    stream = object.stream()
+  } else {
+    // 4. Otherwise, set stream to a new ReadableStream object, and set
+    //    up stream with byte reading support.
+    stream = new ReadableStream({
+      async pull (controller) {
+        const buffer = typeof source === 'string' ? textEncoder.encode(source) : source
+
+        if (buffer.byteLength) {
+          controller.enqueue(buffer)
+        }
+
+        queueMicrotask(() => readableStreamClose(controller))
+      },
+      start () {},
+      type: 'bytes'
+    })
+  }
+
+  // 5. Assert: stream is a ReadableStream object.
+  assert(isReadableStreamLike(stream))
+
+  // 6. Let action be null.
+  let action = null
+
+  // 7. Let source be null.
+  let source = null
+
+  // 8. Let length be null.
+  let length = null
+
+  // 9. Let type be null.
+  let type = null
+
+  // 10. Switch on object:
+  if (typeof object === 'string') {
+    // Set source to the UTF-8 encoding of object.
+    // Note: setting source to a Uint8Array here breaks some mocking assumptions.
+    source = object
+
+    // Set type to `text/plain;charset=UTF-8`.
+    type = 'text/plain;charset=UTF-8'
+  } else if (object instanceof URLSearchParams) {
+    // URLSearchParams
+
+    // spec says to run application/x-www-form-urlencoded on body.list
+    // this is implemented in Node.js as apart of an URLSearchParams instance toString method
+    // See: https://github.com/nodejs/node/blob/e46c680bf2b211bbd52cf959ca17ee98c7f657f5/lib/internal/url.js#L490
+    // and https://github.com/nodejs/node/blob/e46c680bf2b211bbd52cf959ca17ee98c7f657f5/lib/internal/url.js#L1100
+
+    // Set source to the result of running the application/x-www-form-urlencoded serializer with object’s list.
+    source = object.toString()
+
+    // Set type to `application/x-www-form-urlencoded;charset=UTF-8`.
+    type = 'application/x-www-form-urlencoded;charset=UTF-8'
+  } else if (isArrayBuffer(object)) {
+    // BufferSource/ArrayBuffer
+
+    // Set source to a copy of the bytes held by object.
+    source = new Uint8Array(object.slice())
+  } else if (ArrayBuffer.isView(object)) {
+    // BufferSource/ArrayBufferView
+
+    // Set source to a copy of the bytes held by object.
+    source = new Uint8Array(object.buffer.slice(object.byteOffset, object.byteOffset + object.byteLength))
+  } else if (util.isFormDataLike(object)) {
+    const boundary = `----formdata-undici-0${`${random(1e11)}`.padStart(11, '0')}`
+    const prefix = `--${boundary}\r\nContent-Disposition: form-data`
+
+    /*! formdata-polyfill. MIT License. Jimmy Wärting <https://jimmy.warting.se/opensource> */
+    const escape = (str) =>
+      str.replace(/\n/g, '%0A').replace(/\r/g, '%0D').replace(/"/g, '%22')
+    const normalizeLinefeeds = (value) => value.replace(/\r?\n|\r/g, '\r\n')
+
+    // Set action to this step: run the multipart/form-data
+    // encoding algorithm, with object’s entry list and UTF-8.
+    // - This ensures that the body is immutable and can't be changed afterwords
+    // - That the content-length is calculated in advance.
+    // - And that all parts are pre-encoded and ready to be sent.
+
+    const blobParts = []
+    const rn = new Uint8Array([13, 10]) // '\r\n'
+    length = 0
+    let hasUnknownSizeValue = false
+
+    for (const [name, value] of object) {
+      if (typeof value === 'string') {
+        const chunk = textEncoder.encode(prefix +
+          `; name="${escape(normalizeLinefeeds(name))}"` +
+          `\r\n\r\n${normalizeLinefeeds(value)}\r\n`)
+        blobParts.push(chunk)
+        length += chunk.byteLength
+      } else {
+        const chunk = textEncoder.encode(`${prefix}; name="${escape(normalizeLinefeeds(name))}"` +
+          (value.name ? `; filename="${escape(value.name)}"` : '') + '\r\n' +
+          `Content-Type: ${
+            value.type || 'application/octet-stream'
+          }\r\n\r\n`)
+        blobParts.push(chunk, value, rn)
+        if (typeof value.size === 'number') {
+          length += chunk.byteLength + value.size + rn.byteLength
+        } else {
+          hasUnknownSizeValue = true
+        }
+      }
+    }
+
+    // CRLF is appended to the body to function with legacy servers and match other implementations.
+    // https://github.com/curl/curl/blob/3434c6b46e682452973972e8313613dfa58cd690/lib/mime.c#L1029-L1030
+    // https://github.com/form-data/form-data/issues/63
+    const chunk = textEncoder.encode(`--${boundary}--\r\n`)
+    blobParts.push(chunk)
+    length += chunk.byteLength
+    if (hasUnknownSizeValue) {
+      length = null
+    }
+
+    // Set source to object.
+    source = object
+
+    action = async function * () {
+      for (const part of blobParts) {
+        if (part.stream) {
+          yield * part.stream()
+        } else {
+          yield part
+        }
+      }
+    }
+
+    // Set type to `multipart/form-data; boundary=`,
+    // followed by the multipart/form-data boundary string generated
+    // by the multipart/form-data encoding algorithm.
+    type = `multipart/form-data; boundary=${boundary}`
+  } else if (isBlobLike(object)) {
+    // Blob
+
+    // Set source to object.
+    source = object
+
+    // Set length to object’s size.
+    length = object.size
+
+    // If object’s type attribute is not the empty byte sequence, set
+    // type to its value.
+    if (object.type) {
+      type = object.type
+    }
+  } else if (typeof object[Symbol.asyncIterator] === 'function') {
+    // If keepalive is true, then throw a TypeError.
+    if (keepalive) {
+      throw new TypeError('keepalive')
+    }
+
+    // If object is disturbed or locked, then throw a TypeError.
+    if (util.isDisturbed(object) || object.locked) {
+      throw new TypeError(
+        'Response body object should not be disturbed or locked'
+      )
+    }
+
+    stream =
+      object instanceof ReadableStream ? object : ReadableStreamFrom(object)
+  }
+
+  // 11. If source is a byte sequence, then set action to a
+  // step that returns source and length to source’s length.
+  if (typeof source === 'string' || util.isBuffer(source)) {
+    length = Buffer.byteLength(source)
+  }
+
+  // 12. If action is non-null, then run these steps in in parallel:
+  if (action != null) {
+    // Run action.
+    let iterator
+    stream = new ReadableStream({
+      async start () {
+        iterator = action(object)[Symbol.asyncIterator]()
+      },
+      async pull (controller) {
+        const { value, done } = await iterator.next()
+        if (done) {
+          // When running action is done, close stream.
+          queueMicrotask(() => {
+            controller.close()
+            controller.byobRequest?.respond(0)
+          })
+        } else {
+          // Whenever one or more bytes are available and stream is not errored,
+          // enqueue a Uint8Array wrapping an ArrayBuffer containing the available
+          // bytes into stream.
+          if (!isErrored(stream)) {
+            const buffer = new Uint8Array(value)
+            if (buffer.byteLength) {
+              controller.enqueue(buffer)
+            }
+          }
+        }
+        return controller.desiredSize > 0
+      },
+      async cancel (reason) {
+        await iterator.return()
+      },
+      type: 'bytes'
+    })
+  }
+
+  // 13. Let body be a body whose stream is stream, source is source,
+  // and length is length.
+  const body = { stream, source, length }
+
+  // 14. Return (body, type).
+  return [body, type]
+}
+
+// https://fetch.spec.whatwg.org/#bodyinit-safely-extract
+function safelyExtractBody (object, keepalive = false) {
+  // To safely extract a body and a `Content-Type` value from
+  // a byte sequence or BodyInit object object, run these steps:
+
+  // 1. If object is a ReadableStream object, then:
+  if (object instanceof ReadableStream) {
+    // Assert: object is neither disturbed nor locked.
+    // istanbul ignore next
+    assert(!util.isDisturbed(object), 'The body has already been consumed.')
+    // istanbul ignore next
+    assert(!object.locked, 'The stream is locked.')
+  }
+
+  // 2. Return the results of extracting object.
+  return extractBody(object, keepalive)
+}
+
+function cloneBody (instance, body) {
+  // To clone a body body, run these steps:
+
+  // https://fetch.spec.whatwg.org/#concept-body-clone
+
+  // 1. Let « out1, out2 » be the result of teeing body’s stream.
+  const [out1, out2] = body.stream.tee()
+
+  // 2. Set body’s stream to out1.
+  body.stream = out1
+
+  // 3. Return a body whose stream is out2 and other members are copied from body.
+  return {
+    stream: out2,
+    length: body.length,
+    source: body.source
+  }
+}
+
+function throwIfAborted (state) {
+  if (state.aborted) {
+    throw new DOMException('The operation was aborted.', 'AbortError')
+  }
+}
+
+function bodyMixinMethods (instance) {
+  const methods = {
+    blob () {
+      // The blob() method steps are to return the result of
+      // running consume body with this and the following step
+      // given a byte sequence bytes: return a Blob whose
+      // contents are bytes and whose type attribute is this’s
+      // MIME type.
+      return consumeBody(this, (bytes) => {
+        let mimeType = bodyMimeType(this)
+
+        if (mimeType === null) {
+          mimeType = ''
+        } else if (mimeType) {
+          mimeType = serializeAMimeType(mimeType)
+        }
+
+        // Return a Blob whose contents are bytes and type attribute
+        // is mimeType.
+        return new Blob([bytes], { type: mimeType })
+      }, instance)
+    },
+
+    arrayBuffer () {
+      // The arrayBuffer() method steps are to return the result
+      // of running consume body with this and the following step
+      // given a byte sequence bytes: return a new ArrayBuffer
+      // whose contents are bytes.
+      return consumeBody(this, (bytes) => {
+        return new Uint8Array(bytes).buffer
+      }, instance)
+    },
+
+    text () {
+      // The text() method steps are to return the result of running
+      // consume body with this and UTF-8 decode.
+      return consumeBody(this, utf8DecodeBytes, instance)
+    },
+
+    json () {
+      // The json() method steps are to return the result of running
+      // consume body with this and parse JSON from bytes.
+      return consumeBody(this, parseJSONFromBytes, instance)
+    },
+
+    formData () {
+      // The formData() method steps are to return the result of running
+      // consume body with this and the following step given a byte sequence bytes:
+      return consumeBody(this, (value) => {
+        // 1. Let mimeType be the result of get the MIME type with this.
+        const mimeType = bodyMimeType(this)
+
+        // 2. If mimeType is non-null, then switch on mimeType’s essence and run
+        //    the corresponding steps:
+        if (mimeType !== null) {
+          switch (mimeType.essence) {
+            case 'multipart/form-data': {
+              // 1. ... [long step]
+              const parsed = multipartFormDataParser(value, mimeType)
+
+              // 2. If that fails for some reason, then throw a TypeError.
+              if (parsed === 'failure') {
+                throw new TypeError('Failed to parse body as FormData.')
+              }
+
+              // 3. Return a new FormData object, appending each entry,
+              //    resulting from the parsing operation, to its entry list.
+              const fd = new FormData()
+              fd[kState] = parsed
+
+              return fd
+            }
+            case 'application/x-www-form-urlencoded': {
+              // 1. Let entries be the result of parsing bytes.
+              const entries = new URLSearchParams(value.toString())
+
+              // 2. If entries is failure, then throw a TypeError.
+
+              // 3. Return a new FormData object whose entry list is entries.
+              const fd = new FormData()
+
+              for (const [name, value] of entries) {
+                fd.append(name, value)
+              }
+
+              return fd
+            }
+          }
+        }
+
+        // 3. Throw a TypeError.
+        throw new TypeError(
+          'Content-Type was not one of "multipart/form-data" or "application/x-www-form-urlencoded".'
+        )
+      }, instance)
+    },
+
+    bytes () {
+      // The bytes() method steps are to return the result of running consume body
+      // with this and the following step given a byte sequence bytes: return the
+      // result of creating a Uint8Array from bytes in this’s relevant realm.
+      return consumeBody(this, (bytes) => {
+        return new Uint8Array(bytes)
+      }, instance)
+    }
+  }
+
+  return methods
+}
+
+function mixinBody (prototype) {
+  Object.assign(prototype.prototype, bodyMixinMethods(prototype))
+}
+
+/**
+ * @see https://fetch.spec.whatwg.org/#concept-body-consume-body
+ * @param {Response|Request} object
+ * @param {(value: unknown) => unknown} convertBytesToJSValue
+ * @param {Response|Request} instance
+ */
+async function consumeBody (object, convertBytesToJSValue, instance) {
+  webidl.brandCheck(object, instance)
+
+  // 1. If object is unusable, then return a promise rejected
+  //    with a TypeError.
+  if (bodyUnusable(object)) {
+    throw new TypeError('Body is unusable: Body has already been read')
+  }
+
+  throwIfAborted(object[kState])
+
+  // 2. Let promise be a new promise.
+  const promise = createDeferredPromise()
+
+  // 3. Let errorSteps given error be to reject promise with error.
+  const errorSteps = (error) => promise.reject(error)
+
+  // 4. Let successSteps given a byte sequence data be to resolve
+  //    promise with the result of running convertBytesToJSValue
+  //    with data. If that threw an exception, then run errorSteps
+  //    with that exception.
+  const successSteps = (data) => {
+    try {
+      promise.resolve(convertBytesToJSValue(data))
+    } catch (e) {
+      errorSteps(e)
+    }
+  }
+
+  // 5. If object’s body is null, then run successSteps with an
+  //    empty byte sequence.
+  if (object[kState].body == null) {
+    successSteps(Buffer.allocUnsafe(0))
+    return promise.promise
+  }
+
+  // 6. Otherwise, fully read object’s body given successSteps,
+  //    errorSteps, and object’s relevant global object.
+  await fullyReadBody(object[kState].body, successSteps, errorSteps)
+
+  // 7. Return promise.
+  return promise.promise
+}
+
+// https://fetch.spec.whatwg.org/#body-unusable
+function bodyUnusable (object) {
+  const body = object[kState].body
+
+  // An object including the Body interface mixin is
+  // said to be unusable if its body is non-null and
+  // its body’s stream is disturbed or locked.
+  return body != null && (body.stream.locked || util.isDisturbed(body.stream))
+}
+
+/**
+ * @see https://infra.spec.whatwg.org/#parse-json-bytes-to-a-javascript-value
+ * @param {Uint8Array} bytes
+ */
+function parseJSONFromBytes (bytes) {
+  return JSON.parse(utf8DecodeBytes(bytes))
+}
+
+/**
+ * @see https://fetch.spec.whatwg.org/#concept-body-mime-type
+ * @param {import('./response').Response|import('./request').Request} requestOrResponse
+ */
+function bodyMimeType (requestOrResponse) {
+  // 1. Let headers be null.
+  // 2. If requestOrResponse is a Request object, then set headers to requestOrResponse’s request’s header list.
+  // 3. Otherwise, set headers to requestOrResponse’s response’s header list.
+  /** @type {import('./headers').HeadersList} */
+  const headers = requestOrResponse[kState].headersList
+
+  // 4. Let mimeType be the result of extracting a MIME type from headers.
+  const mimeType = extractMimeType(headers)
+
+  // 5. If mimeType is failure, then return null.
+  if (mimeType === 'failure') {
+    return null
+  }
+
+  // 6. Return mimeType.
+  return mimeType
+}
+
+module.exports = {
+  extractBody,
+  safelyExtractBody,
+  cloneBody,
+  mixinBody,
+  streamRegistry,
+  hasFinalizationRegistry,
+  bodyUnusable
+}

extracted-source/node_modules/undici/lib/web/fetch/constants.js

@@ -0,0 +1,124 @@
+'use strict'
+
+const corsSafeListedMethods = /** @type {const} */ (['GET', 'HEAD', 'POST'])
+const corsSafeListedMethodsSet = new Set(corsSafeListedMethods)
+
+const nullBodyStatus = /** @type {const} */ ([101, 204, 205, 304])
+
+const redirectStatus = /** @type {const} */ ([301, 302, 303, 307, 308])
+const redirectStatusSet = new Set(redirectStatus)
+
+/**
+ * @see https://fetch.spec.whatwg.org/#block-bad-port
+ */
+const badPorts = /** @type {const} */ ([
+  '1', '7', '9', '11', '13', '15', '17', '19', '20', '21', '22', '23', '25', '37', '42', '43', '53', '69', '77', '79',
+  '87', '95', '101', '102', '103', '104', '109', '110', '111', '113', '115', '117', '119', '123', '135', '137',
+  '139', '143', '161', '179', '389', '427', '465', '512', '513', '514', '515', '526', '530', '531', '532',
+  '540', '548', '554', '556', '563', '587', '601', '636', '989', '990', '993', '995', '1719', '1720', '1723',
+  '2049', '3659', '4045', '4190', '5060', '5061', '6000', '6566', '6665', '6666', '6667', '6668', '6669', '6679',
+  '6697', '10080'
+])
+const badPortsSet = new Set(badPorts)
+
+/**
+ * @see https://w3c.github.io/webappsec-referrer-policy/#referrer-policies
+ */
+const referrerPolicy = /** @type {const} */ ([
+  '',
+  'no-referrer',
+  'no-referrer-when-downgrade',
+  'same-origin',
+  'origin',
+  'strict-origin',
+  'origin-when-cross-origin',
+  'strict-origin-when-cross-origin',
+  'unsafe-url'
+])
+const referrerPolicySet = new Set(referrerPolicy)
+
+const requestRedirect = /** @type {const} */ (['follow', 'manual', 'error'])
+
+const safeMethods = /** @type {const} */ (['GET', 'HEAD', 'OPTIONS', 'TRACE'])
+const safeMethodsSet = new Set(safeMethods)
+
+const requestMode = /** @type {const} */ (['navigate', 'same-origin', 'no-cors', 'cors'])
+
+const requestCredentials = /** @type {const} */ (['omit', 'same-origin', 'include'])
+
+const requestCache = /** @type {const} */ ([
+  'default',
+  'no-store',
+  'reload',
+  'no-cache',
+  'force-cache',
+  'only-if-cached'
+])
+
+/**
+ * @see https://fetch.spec.whatwg.org/#request-body-header-name
+ */
+const requestBodyHeader = /** @type {const} */ ([
+  'content-encoding',
+  'content-language',
+  'content-location',
+  'content-type',
+  // See https://github.com/nodejs/undici/issues/2021
+  // 'Content-Length' is a forbidden header name, which is typically
+  // removed in the Headers implementation. However, undici doesn't
+  // filter out headers, so we add it here.
+  'content-length'
+])
+
+/**
+ * @see https://fetch.spec.whatwg.org/#enumdef-requestduplex
+ */
+const requestDuplex = /** @type {const} */ ([
+  'half'
+])
+
+/**
+ * @see http://fetch.spec.whatwg.org/#forbidden-method
+ */
+const forbiddenMethods = /** @type {const} */ (['CONNECT', 'TRACE', 'TRACK'])
+const forbiddenMethodsSet = new Set(forbiddenMethods)
+
+const subresource = /** @type {const} */ ([
+  'audio',
+  'audioworklet',
+  'font',
+  'image',
+  'manifest',
+  'paintworklet',
+  'script',
+  'style',
+  'track',
+  'video',
+  'xslt',
+  ''
+])
+const subresourceSet = new Set(subresource)
+
+module.exports = {
+  subresource,
+  forbiddenMethods,
+  requestBodyHeader,
+  referrerPolicy,
+  requestRedirect,
+  requestMode,
+  requestCredentials,
+  requestCache,
+  redirectStatus,
+  corsSafeListedMethods,
+  nullBodyStatus,
+  safeMethods,
+  badPorts,
+  requestDuplex,
+  subresourceSet,
+  badPortsSet,
+  redirectStatusSet,
+  corsSafeListedMethodsSet,
+  safeMethodsSet,
+  forbiddenMethodsSet,
+  referrerPolicySet
+}

extracted-source/node_modules/undici/lib/web/fetch/data-url.js

@@ -0,0 +1,744 @@
+'use strict'
+
+const assert = require('node:assert')
+
+const encoder = new TextEncoder()
+
+/**
+ * @see https://mimesniff.spec.whatwg.org/#http-token-code-point
+ */
+const HTTP_TOKEN_CODEPOINTS = /^[!#$%&'*+\-.^_|~A-Za-z0-9]+$/
+const HTTP_WHITESPACE_REGEX = /[\u000A\u000D\u0009\u0020]/ // eslint-disable-line
+const ASCII_WHITESPACE_REPLACE_REGEX = /[\u0009\u000A\u000C\u000D\u0020]/g // eslint-disable-line
+/**
+ * @see https://mimesniff.spec.whatwg.org/#http-quoted-string-token-code-point
+ */
+const HTTP_QUOTED_STRING_TOKENS = /^[\u0009\u0020-\u007E\u0080-\u00FF]+$/ // eslint-disable-line
+
+// https://fetch.spec.whatwg.org/#data-url-processor
+/** @param {URL} dataURL */
+function dataURLProcessor (dataURL) {
+  // 1. Assert: dataURL’s scheme is "data".
+  assert(dataURL.protocol === 'data:')
+
+  // 2. Let input be the result of running the URL
+  // serializer on dataURL with exclude fragment
+  // set to true.
+  let input = URLSerializer(dataURL, true)
+
+  // 3. Remove the leading "data:" string from input.
+  input = input.slice(5)
+
+  // 4. Let position point at the start of input.
+  const position = { position: 0 }
+
+  // 5. Let mimeType be the result of collecting a
+  // sequence of code points that are not equal
+  // to U+002C (,), given position.
+  let mimeType = collectASequenceOfCodePointsFast(
+    ',',
+    input,
+    position
+  )
+
+  // 6. Strip leading and trailing ASCII whitespace
+  // from mimeType.
+  // Undici implementation note: we need to store the
+  // length because if the mimetype has spaces removed,
+  // the wrong amount will be sliced from the input in
+  // step #9
+  const mimeTypeLength = mimeType.length
+  mimeType = removeASCIIWhitespace(mimeType, true, true)
+
+  // 7. If position is past the end of input, then
+  // return failure
+  if (position.position >= input.length) {
+    return 'failure'
+  }
+
+  // 8. Advance position by 1.
+  position.position++
+
+  // 9. Let encodedBody be the remainder of input.
+  const encodedBody = input.slice(mimeTypeLength + 1)
+
+  // 10. Let body be the percent-decoding of encodedBody.
+  let body = stringPercentDecode(encodedBody)
+
+  // 11. If mimeType ends with U+003B (;), followed by
+  // zero or more U+0020 SPACE, followed by an ASCII
+  // case-insensitive match for "base64", then:
+  if (/;(\u0020){0,}base64$/i.test(mimeType)) {
+    // 1. Let stringBody be the isomorphic decode of body.
+    const stringBody = isomorphicDecode(body)
+
+    // 2. Set body to the forgiving-base64 decode of
+    // stringBody.
+    body = forgivingBase64(stringBody)
+
+    // 3. If body is failure, then return failure.
+    if (body === 'failure') {
+      return 'failure'
+    }
+
+    // 4. Remove the last 6 code points from mimeType.
+    mimeType = mimeType.slice(0, -6)
+
+    // 5. Remove trailing U+0020 SPACE code points from mimeType,
+    // if any.
+    mimeType = mimeType.replace(/(\u0020)+$/, '')
+
+    // 6. Remove the last U+003B (;) code point from mimeType.
+    mimeType = mimeType.slice(0, -1)
+  }
+
+  // 12. If mimeType starts with U+003B (;), then prepend
+  // "text/plain" to mimeType.
+  if (mimeType.startsWith(';')) {
+    mimeType = 'text/plain' + mimeType
+  }
+
+  // 13. Let mimeTypeRecord be the result of parsing
+  // mimeType.
+  let mimeTypeRecord = parseMIMEType(mimeType)
+
+  // 14. If mimeTypeRecord is failure, then set
+  // mimeTypeRecord to text/plain;charset=US-ASCII.
+  if (mimeTypeRecord === 'failure') {
+    mimeTypeRecord = parseMIMEType('text/plain;charset=US-ASCII')
+  }
+
+  // 15. Return a new data: URL struct whose MIME
+  // type is mimeTypeRecord and body is body.
+  // https://fetch.spec.whatwg.org/#data-url-struct
+  return { mimeType: mimeTypeRecord, body }
+}
+
+// https://url.spec.whatwg.org/#concept-url-serializer
+/**
+ * @param {URL} url
+ * @param {boolean} excludeFragment
+ */
+function URLSerializer (url, excludeFragment = false) {
+  if (!excludeFragment) {
+    return url.href
+  }
+
+  const href = url.href
+  const hashLength = url.hash.length
+
+  const serialized = hashLength === 0 ? href : href.substring(0, href.length - hashLength)
+
+  if (!hashLength && href.endsWith('#')) {
+    return serialized.slice(0, -1)
+  }
+
+  return serialized
+}
+
+// https://infra.spec.whatwg.org/#collect-a-sequence-of-code-points
+/**
+ * @param {(char: string) => boolean} condition
+ * @param {string} input
+ * @param {{ position: number }} position
+ */
+function collectASequenceOfCodePoints (condition, input, position) {
+  // 1. Let result be the empty string.
+  let result = ''
+
+  // 2. While position doesn’t point past the end of input and the
+  // code point at position within input meets the condition condition:
+  while (position.position < input.length && condition(input[position.position])) {
+    // 1. Append that code point to the end of result.
+    result += input[position.position]
+
+    // 2. Advance position by 1.
+    position.position++
+  }
+
+  // 3. Return result.
+  return result
+}
+
+/**
+ * A faster collectASequenceOfCodePoints that only works when comparing a single character.
+ * @param {string} char
+ * @param {string} input
+ * @param {{ position: number }} position
+ */
+function collectASequenceOfCodePointsFast (char, input, position) {
+  const idx = input.indexOf(char, position.position)
+  const start = position.position
+
+  if (idx === -1) {
+    position.position = input.length
+    return input.slice(start)
+  }
+
+  position.position = idx
+  return input.slice(start, position.position)
+}
+
+// https://url.spec.whatwg.org/#string-percent-decode
+/** @param {string} input */
+function stringPercentDecode (input) {
+  // 1. Let bytes be the UTF-8 encoding of input.
+  const bytes = encoder.encode(input)
+
+  // 2. Return the percent-decoding of bytes.
+  return percentDecode(bytes)
+}
+
+/**
+ * @param {number} byte
+ */
+function isHexCharByte (byte) {
+  // 0-9 A-F a-f
+  return (byte >= 0x30 && byte <= 0x39) || (byte >= 0x41 && byte <= 0x46) || (byte >= 0x61 && byte <= 0x66)
+}
+
+/**
+ * @param {number} byte
+ */
+function hexByteToNumber (byte) {
+  return (
+    // 0-9
+    byte >= 0x30 && byte <= 0x39
+      ? (byte - 48)
+    // Convert to uppercase
+    // ((byte & 0xDF) - 65) + 10
+      : ((byte & 0xDF) - 55)
+  )
+}
+
+// https://url.spec.whatwg.org/#percent-decode
+/** @param {Uint8Array} input */
+function percentDecode (input) {
+  const length = input.length
+  // 1. Let output be an empty byte sequence.
+  /** @type {Uint8Array} */
+  const output = new Uint8Array(length)
+  let j = 0
+  // 2. For each byte byte in input:
+  for (let i = 0; i < length; ++i) {
+    const byte = input[i]
+
+    // 1. If byte is not 0x25 (%), then append byte to output.
+    if (byte !== 0x25) {
+      output[j++] = byte
+
+    // 2. Otherwise, if byte is 0x25 (%) and the next two bytes
+    // after byte in input are not in the ranges
+    // 0x30 (0) to 0x39 (9), 0x41 (A) to 0x46 (F),
+    // and 0x61 (a) to 0x66 (f), all inclusive, append byte
+    // to output.
+    } else if (
+      byte === 0x25 &&
+      !(isHexCharByte(input[i + 1]) && isHexCharByte(input[i + 2]))
+    ) {
+      output[j++] = 0x25
+
+    // 3. Otherwise:
+    } else {
+      // 1. Let bytePoint be the two bytes after byte in input,
+      // decoded, and then interpreted as hexadecimal number.
+      // 2. Append a byte whose value is bytePoint to output.
+      output[j++] = (hexByteToNumber(input[i + 1]) << 4) | hexByteToNumber(input[i + 2])
+
+      // 3. Skip the next two bytes in input.
+      i += 2
+    }
+  }
+
+  // 3. Return output.
+  return length === j ? output : output.subarray(0, j)
+}
+
+// https://mimesniff.spec.whatwg.org/#parse-a-mime-type
+/** @param {string} input */
+function parseMIMEType (input) {
+  // 1. Remove any leading and trailing HTTP whitespace
+  // from input.
+  input = removeHTTPWhitespace(input, true, true)
+
+  // 2. Let position be a position variable for input,
+  // initially pointing at the start of input.
+  const position = { position: 0 }
+
+  // 3. Let type be the result of collecting a sequence
+  // of code points that are not U+002F (/) from
+  // input, given position.
+  const type = collectASequenceOfCodePointsFast(
+    '/',
+    input,
+    position
+  )
+
+  // 4. If type is the empty string or does not solely
+  // contain HTTP token code points, then return failure.
+  // https://mimesniff.spec.whatwg.org/#http-token-code-point
+  if (type.length === 0 || !HTTP_TOKEN_CODEPOINTS.test(type)) {
+    return 'failure'
+  }
+
+  // 5. If position is past the end of input, then return
+  // failure
+  if (position.position > input.length) {
+    return 'failure'
+  }
+
+  // 6. Advance position by 1. (This skips past U+002F (/).)
+  position.position++
+
+  // 7. Let subtype be the result of collecting a sequence of
+  // code points that are not U+003B (;) from input, given
+  // position.
+  let subtype = collectASequenceOfCodePointsFast(
+    ';',
+    input,
+    position
+  )
+
+  // 8. Remove any trailing HTTP whitespace from subtype.
+  subtype = removeHTTPWhitespace(subtype, false, true)
+
+  // 9. If subtype is the empty string or does not solely
+  // contain HTTP token code points, then return failure.
+  if (subtype.length === 0 || !HTTP_TOKEN_CODEPOINTS.test(subtype)) {
+    return 'failure'
+  }
+
+  const typeLowercase = type.toLowerCase()
+  const subtypeLowercase = subtype.toLowerCase()
+
+  // 10. Let mimeType be a new MIME type record whose type
+  // is type, in ASCII lowercase, and subtype is subtype,
+  // in ASCII lowercase.
+  // https://mimesniff.spec.whatwg.org/#mime-type
+  const mimeType = {
+    type: typeLowercase,
+    subtype: subtypeLowercase,
+    /** @type {Map<string, string>} */
+    parameters: new Map(),
+    // https://mimesniff.spec.whatwg.org/#mime-type-essence
+    essence: `${typeLowercase}/${subtypeLowercase}`
+  }
+
+  // 11. While position is not past the end of input:
+  while (position.position < input.length) {
+    // 1. Advance position by 1. (This skips past U+003B (;).)
+    position.position++
+
+    // 2. Collect a sequence of code points that are HTTP
+    // whitespace from input given position.
+    collectASequenceOfCodePoints(
+      // https://fetch.spec.whatwg.org/#http-whitespace
+      char => HTTP_WHITESPACE_REGEX.test(char),
+      input,
+      position
+    )
+
+    // 3. Let parameterName be the result of collecting a
+    // sequence of code points that are not U+003B (;)
+    // or U+003D (=) from input, given position.
+    let parameterName = collectASequenceOfCodePoints(
+      (char) => char !== ';' && char !== '=',
+      input,
+      position
+    )
+
+    // 4. Set parameterName to parameterName, in ASCII
+    // lowercase.
+    parameterName = parameterName.toLowerCase()
+
+    // 5. If position is not past the end of input, then:
+    if (position.position < input.length) {
+      // 1. If the code point at position within input is
+      // U+003B (;), then continue.
+      if (input[position.position] === ';') {
+        continue
+      }
+
+      // 2. Advance position by 1. (This skips past U+003D (=).)
+      position.position++
+    }
+
+    // 6. If position is past the end of input, then break.
+    if (position.position > input.length) {
+      break
+    }
+
+    // 7. Let parameterValue be null.
+    let parameterValue = null
+
+    // 8. If the code point at position within input is
+    // U+0022 ("), then:
+    if (input[position.position] === '"') {
+      // 1. Set parameterValue to the result of collecting
+      // an HTTP quoted string from input, given position
+      // and the extract-value flag.
+      parameterValue = collectAnHTTPQuotedString(input, position, true)
+
+      // 2. Collect a sequence of code points that are not
+      // U+003B (;) from input, given position.
+      collectASequenceOfCodePointsFast(
+        ';',
+        input,
+        position
+      )
+
+    // 9. Otherwise:
+    } else {
+      // 1. Set parameterValue to the result of collecting
+      // a sequence of code points that are not U+003B (;)
+      // from input, given position.
+      parameterValue = collectASequenceOfCodePointsFast(
+        ';',
+        input,
+        position
+      )
+
+      // 2. Remove any trailing HTTP whitespace from parameterValue.
+      parameterValue = removeHTTPWhitespace(parameterValue, false, true)
+
+      // 3. If parameterValue is the empty string, then continue.
+      if (parameterValue.length === 0) {
+        continue
+      }
+    }
+
+    // 10. If all of the following are true
+    // - parameterName is not the empty string
+    // - parameterName solely contains HTTP token code points
+    // - parameterValue solely contains HTTP quoted-string token code points
+    // - mimeType’s parameters[parameterName] does not exist
+    // then set mimeType’s parameters[parameterName] to parameterValue.
+    if (
+      parameterName.length !== 0 &&
+      HTTP_TOKEN_CODEPOINTS.test(parameterName) &&
+      (parameterValue.length === 0 || HTTP_QUOTED_STRING_TOKENS.test(parameterValue)) &&
+      !mimeType.parameters.has(parameterName)
+    ) {
+      mimeType.parameters.set(parameterName, parameterValue)
+    }
+  }
+
+  // 12. Return mimeType.
+  return mimeType
+}
+
+// https://infra.spec.whatwg.org/#forgiving-base64-decode
+/** @param {string} data */
+function forgivingBase64 (data) {
+  // 1. Remove all ASCII whitespace from data.
+  data = data.replace(ASCII_WHITESPACE_REPLACE_REGEX, '')  // eslint-disable-line
+
+  let dataLength = data.length
+  // 2. If data’s code point length divides by 4 leaving
+  // no remainder, then:
+  if (dataLength % 4 === 0) {
+    // 1. If data ends with one or two U+003D (=) code points,
+    // then remove them from data.
+    if (data.charCodeAt(dataLength - 1) === 0x003D) {
+      --dataLength
+      if (data.charCodeAt(dataLength - 1) === 0x003D) {
+        --dataLength
+      }
+    }
+  }
+
+  // 3. If data’s code point length divides by 4 leaving
+  // a remainder of 1, then return failure.
+  if (dataLength % 4 === 1) {
+    return 'failure'
+  }
+
+  // 4. If data contains a code point that is not one of
+  //  U+002B (+)
+  //  U+002F (/)
+  //  ASCII alphanumeric
+  // then return failure.
+  if (/[^+/0-9A-Za-z]/.test(data.length === dataLength ? data : data.substring(0, dataLength))) {
+    return 'failure'
+  }
+
+  const buffer = Buffer.from(data, 'base64')
+  return new Uint8Array(buffer.buffer, buffer.byteOffset, buffer.byteLength)
+}
+
+// https://fetch.spec.whatwg.org/#collect-an-http-quoted-string
+// tests: https://fetch.spec.whatwg.org/#example-http-quoted-string
+/**
+ * @param {string} input
+ * @param {{ position: number }} position
+ * @param {boolean?} extractValue
+ */
+function collectAnHTTPQuotedString (input, position, extractValue) {
+  // 1. Let positionStart be position.
+  const positionStart = position.position
+
+  // 2. Let value be the empty string.
+  let value = ''
+
+  // 3. Assert: the code point at position within input
+  // is U+0022 (").
+  assert(input[position.position] === '"')
+
+  // 4. Advance position by 1.
+  position.position++
+
+  // 5. While true:
+  while (true) {
+    // 1. Append the result of collecting a sequence of code points
+    // that are not U+0022 (") or U+005C (\) from input, given
+    // position, to value.
+    value += collectASequenceOfCodePoints(
+      (char) => char !== '"' && char !== '\\',
+      input,
+      position
+    )
+
+    // 2. If position is past the end of input, then break.
+    if (position.position >= input.length) {
+      break
+    }
+
+    // 3. Let quoteOrBackslash be the code point at position within
+    // input.
+    const quoteOrBackslash = input[position.position]
+
+    // 4. Advance position by 1.
+    position.position++
+
+    // 5. If quoteOrBackslash is U+005C (\), then:
+    if (quoteOrBackslash === '\\') {
+      // 1. If position is past the end of input, then append
+      // U+005C (\) to value and break.
+      if (position.position >= input.length) {
+        value += '\\'
+        break
+      }
+
+      // 2. Append the code point at position within input to value.
+      value += input[position.position]
+
+      // 3. Advance position by 1.
+      position.position++
+
+    // 6. Otherwise:
+    } else {
+      // 1. Assert: quoteOrBackslash is U+0022 (").
+      assert(quoteOrBackslash === '"')
+
+      // 2. Break.
+      break
+    }
+  }
+
+  // 6. If the extract-value flag is set, then return value.
+  if (extractValue) {
+    return value
+  }
+
+  // 7. Return the code points from positionStart to position,
+  // inclusive, within input.
+  return input.slice(positionStart, position.position)
+}
+
+/**
+ * @see https://mimesniff.spec.whatwg.org/#serialize-a-mime-type
+ */
+function serializeAMimeType (mimeType) {
+  assert(mimeType !== 'failure')
+  const { parameters, essence } = mimeType
+
+  // 1. Let serialization be the concatenation of mimeType’s
+  //    type, U+002F (/), and mimeType’s subtype.
+  let serialization = essence
+
+  // 2. For each name → value of mimeType’s parameters:
+  for (let [name, value] of parameters.entries()) {
+    // 1. Append U+003B (;) to serialization.
+    serialization += ';'
+
+    // 2. Append name to serialization.
+    serialization += name
+
+    // 3. Append U+003D (=) to serialization.
+    serialization += '='
+
+    // 4. If value does not solely contain HTTP token code
+    //    points or value is the empty string, then:
+    if (!HTTP_TOKEN_CODEPOINTS.test(value)) {
+      // 1. Precede each occurrence of U+0022 (") or
+      //    U+005C (\) in value with U+005C (\).
+      value = value.replace(/(\\|")/g, '\\$1')
+
+      // 2. Prepend U+0022 (") to value.
+      value = '"' + value
+
+      // 3. Append U+0022 (") to value.
+      value += '"'
+    }
+
+    // 5. Append value to serialization.
+    serialization += value
+  }
+
+  // 3. Return serialization.
+  return serialization
+}
+
+/**
+ * @see https://fetch.spec.whatwg.org/#http-whitespace
+ * @param {number} char
+ */
+function isHTTPWhiteSpace (char) {
+  // "\r\n\t "
+  return char === 0x00d || char === 0x00a || char === 0x009 || char === 0x020
+}
+
+/**
+ * @see https://fetch.spec.whatwg.org/#http-whitespace
+ * @param {string} str
+ * @param {boolean} [leading=true]
+ * @param {boolean} [trailing=true]
+ */
+function removeHTTPWhitespace (str, leading = true, trailing = true) {
+  return removeChars(str, leading, trailing, isHTTPWhiteSpace)
+}
+
+/**
+ * @see https://infra.spec.whatwg.org/#ascii-whitespace
+ * @param {number} char
+ */
+function isASCIIWhitespace (char) {
+  // "\r\n\t\f "
+  return char === 0x00d || char === 0x00a || char === 0x009 || char === 0x00c || char === 0x020
+}
+
+/**
+ * @see https://infra.spec.whatwg.org/#strip-leading-and-trailing-ascii-whitespace
+ * @param {string} str
+ * @param {boolean} [leading=true]
+ * @param {boolean} [trailing=true]
+ */
+function removeASCIIWhitespace (str, leading = true, trailing = true) {
+  return removeChars(str, leading, trailing, isASCIIWhitespace)
+}
+
+/**
+ * @param {string} str
+ * @param {boolean} leading
+ * @param {boolean} trailing
+ * @param {(charCode: number) => boolean} predicate
+ * @returns
+ */
+function removeChars (str, leading, trailing, predicate) {
+  let lead = 0
+  let trail = str.length - 1
+
+  if (leading) {
+    while (lead < str.length && predicate(str.charCodeAt(lead))) lead++
+  }
+
+  if (trailing) {
+    while (trail > 0 && predicate(str.charCodeAt(trail))) trail--
+  }
+
+  return lead === 0 && trail === str.length - 1 ? str : str.slice(lead, trail + 1)
+}
+
+/**
+ * @see https://infra.spec.whatwg.org/#isomorphic-decode
+ * @param {Uint8Array} input
+ * @returns {string}
+ */
+function isomorphicDecode (input) {
+  // 1. To isomorphic decode a byte sequence input, return a string whose code point
+  //    length is equal to input’s length and whose code points have the same values
+  //    as the values of input’s bytes, in the same order.
+  const length = input.length
+  if ((2 << 15) - 1 > length) {
+    return String.fromCharCode.apply(null, input)
+  }
+  let result = ''; let i = 0
+  let addition = (2 << 15) - 1
+  while (i < length) {
+    if (i + addition > length) {
+      addition = length - i
+    }
+    result += String.fromCharCode.apply(null, input.subarray(i, i += addition))
+  }
+  return result
+}
+
+/**
+ * @see https://mimesniff.spec.whatwg.org/#minimize-a-supported-mime-type
+ * @param {Exclude<ReturnType<typeof parseMIMEType>, 'failure'>} mimeType
+ */
+function minimizeSupportedMimeType (mimeType) {
+  switch (mimeType.essence) {
+    case 'application/ecmascript':
+    case 'application/javascript':
+    case 'application/x-ecmascript':
+    case 'application/x-javascript':
+    case 'text/ecmascript':
+    case 'text/javascript':
+    case 'text/javascript1.0':
+    case 'text/javascript1.1':
+    case 'text/javascript1.2':
+    case 'text/javascript1.3':
+    case 'text/javascript1.4':
+    case 'text/javascript1.5':
+    case 'text/jscript':
+    case 'text/livescript':
+    case 'text/x-ecmascript':
+    case 'text/x-javascript':
+      // 1. If mimeType is a JavaScript MIME type, then return "text/javascript".
+      return 'text/javascript'
+    case 'application/json':
+    case 'text/json':
+      // 2. If mimeType is a JSON MIME type, then return "application/json".
+      return 'application/json'
+    case 'image/svg+xml':
+      // 3. If mimeType’s essence is "image/svg+xml", then return "image/svg+xml".
+      return 'image/svg+xml'
+    case 'text/xml':
+    case 'application/xml':
+      // 4. If mimeType is an XML MIME type, then return "application/xml".
+      return 'application/xml'
+  }
+
+  // 2. If mimeType is a JSON MIME type, then return "application/json".
+  if (mimeType.subtype.endsWith('+json')) {
+    return 'application/json'
+  }
+
+  // 4. If mimeType is an XML MIME type, then return "application/xml".
+  if (mimeType.subtype.endsWith('+xml')) {
+    return 'application/xml'
+  }
+
+  // 5. If mimeType is supported by the user agent, then return mimeType’s essence.
+  // Technically, node doesn't support any mimetypes.
+
+  // 6. Return the empty string.
+  return ''
+}
+
+module.exports = {
+  dataURLProcessor,
+  URLSerializer,
+  collectASequenceOfCodePoints,
+  collectASequenceOfCodePointsFast,
+  stringPercentDecode,
+  parseMIMEType,
+  collectAnHTTPQuotedString,
+  serializeAMimeType,
+  removeChars,
+  removeHTTPWhitespace,
+  minimizeSupportedMimeType,
+  HTTP_TOKEN_CODEPOINTS,
+  isomorphicDecode
+}

extracted-source/node_modules/undici/lib/web/fetch/dispatcher-weakref.js

@@ -0,0 +1,46 @@
+'use strict'
+
+const { kConnected, kSize } = require('../../core/symbols')
+
+class CompatWeakRef {
+  constructor (value) {
+    this.value = value
+  }
+
+  deref () {
+    return this.value[kConnected] === 0 && this.value[kSize] === 0
+      ? undefined
+      : this.value
+  }
+}
+
+class CompatFinalizer {
+  constructor (finalizer) {
+    this.finalizer = finalizer
+  }
+
+  register (dispatcher, key) {
+    if (dispatcher.on) {
+      dispatcher.on('disconnect', () => {
+        if (dispatcher[kConnected] === 0 && dispatcher[kSize] === 0) {
+          this.finalizer(key)
+        }
+      })
+    }
+  }
+
+  unregister (key) {}
+}
+
+module.exports = function () {
+  // FIXME: remove workaround when the Node bug is backported to v18
+  // https://github.com/nodejs/node/issues/49344#issuecomment-1741776308
+  if (process.env.NODE_V8_COVERAGE && process.version.startsWith('v18')) {
+    process._rawDebug('Using compatibility WeakRef and FinalizationRegistry')
+    return {
+      WeakRef: CompatWeakRef,
+      FinalizationRegistry: CompatFinalizer
+    }
+  }
+  return { WeakRef, FinalizationRegistry }
+}

extracted-source/node_modules/undici/lib/web/fetch/file.js

@@ -0,0 +1,126 @@
+'use strict'
+
+const { Blob, File } = require('node:buffer')
+const { kState } = require('./symbols')
+const { webidl } = require('./webidl')
+
+// TODO(@KhafraDev): remove
+class FileLike {
+  constructor (blobLike, fileName, options = {}) {
+    // TODO: argument idl type check
+
+    // The File constructor is invoked with two or three parameters, depending
+    // on whether the optional dictionary parameter is used. When the File()
+    // constructor is invoked, user agents must run the following steps:
+
+    // 1. Let bytes be the result of processing blob parts given fileBits and
+    // options.
+
+    // 2. Let n be the fileName argument to the constructor.
+    const n = fileName
+
+    // 3. Process FilePropertyBag dictionary argument by running the following
+    // substeps:
+
+    //    1. If the type member is provided and is not the empty string, let t
+    //    be set to the type dictionary member. If t contains any characters
+    //    outside the range U+0020 to U+007E, then set t to the empty string
+    //    and return from these substeps.
+    //    TODO
+    const t = options.type
+
+    //    2. Convert every character in t to ASCII lowercase.
+    //    TODO
+
+    //    3. If the lastModified member is provided, let d be set to the
+    //    lastModified dictionary member. If it is not provided, set d to the
+    //    current date and time represented as the number of milliseconds since
+    //    the Unix Epoch (which is the equivalent of Date.now() [ECMA-262]).
+    const d = options.lastModified ?? Date.now()
+
+    // 4. Return a new File object F such that:
+    // F refers to the bytes byte sequence.
+    // F.size is set to the number of total bytes in bytes.
+    // F.name is set to n.
+    // F.type is set to t.
+    // F.lastModified is set to d.
+
+    this[kState] = {
+      blobLike,
+      name: n,
+      type: t,
+      lastModified: d
+    }
+  }
+
+  stream (...args) {
+    webidl.brandCheck(this, FileLike)
+
+    return this[kState].blobLike.stream(...args)
+  }
+
+  arrayBuffer (...args) {
+    webidl.brandCheck(this, FileLike)
+
+    return this[kState].blobLike.arrayBuffer(...args)
+  }
+
+  slice (...args) {
+    webidl.brandCheck(this, FileLike)
+
+    return this[kState].blobLike.slice(...args)
+  }
+
+  text (...args) {
+    webidl.brandCheck(this, FileLike)
+
+    return this[kState].blobLike.text(...args)
+  }
+
+  get size () {
+    webidl.brandCheck(this, FileLike)
+
+    return this[kState].blobLike.size
+  }
+
+  get type () {
+    webidl.brandCheck(this, FileLike)
+
+    return this[kState].blobLike.type
+  }
+
+  get name () {
+    webidl.brandCheck(this, FileLike)
+
+    return this[kState].name
+  }
+
+  get lastModified () {
+    webidl.brandCheck(this, FileLike)
+
+    return this[kState].lastModified
+  }
+
+  get [Symbol.toStringTag] () {
+    return 'File'
+  }
+}
+
+webidl.converters.Blob = webidl.interfaceConverter(Blob)
+
+// If this function is moved to ./util.js, some tools (such as
+// rollup) will warn about circular dependencies. See:
+// https://github.com/nodejs/undici/issues/1629
+function isFileLike (object) {
+  return (
+    (object instanceof File) ||
+    (
+      object &&
+      (typeof object.stream === 'function' ||
+      typeof object.arrayBuffer === 'function') &&
+      object[Symbol.toStringTag] === 'File'
+    )
+  )
+}
+
+module.exports = { FileLike, isFileLike }

extracted-source/node_modules/undici/lib/web/fetch/formdata-parser.js

@@ -0,0 +1,474 @@
+'use strict'
+
+const { isUSVString, bufferToLowerCasedHeaderName } = require('../../core/util')
+const { utf8DecodeBytes } = require('./util')
+const { HTTP_TOKEN_CODEPOINTS, isomorphicDecode } = require('./data-url')
+const { isFileLike } = require('./file')
+const { makeEntry } = require('./formdata')
+const assert = require('node:assert')
+const { File: NodeFile } = require('node:buffer')
+
+const File = globalThis.File ?? NodeFile
+
+const formDataNameBuffer = Buffer.from('form-data; name="')
+const filenameBuffer = Buffer.from('; filename')
+const dd = Buffer.from('--')
+const ddcrlf = Buffer.from('--\r\n')
+
+/**
+ * @param {string} chars
+ */
+function isAsciiString (chars) {
+  for (let i = 0; i < chars.length; ++i) {
+    if ((chars.charCodeAt(i) & ~0x7F) !== 0) {
+      return false
+    }
+  }
+  return true
+}
+
+/**
+ * @see https://andreubotella.github.io/multipart-form-data/#multipart-form-data-boundary
+ * @param {string} boundary
+ */
+function validateBoundary (boundary) {
+  const length = boundary.length
+
+  // - its length is greater or equal to 27 and lesser or equal to 70, and
+  if (length < 27 || length > 70) {
+    return false
+  }
+
+  // - it is composed by bytes in the ranges 0x30 to 0x39, 0x41 to 0x5A, or
+  //   0x61 to 0x7A, inclusive (ASCII alphanumeric), or which are 0x27 ('),
+  //   0x2D (-) or 0x5F (_).
+  for (let i = 0; i < length; ++i) {
+    const cp = boundary.charCodeAt(i)
+
+    if (!(
+      (cp >= 0x30 && cp <= 0x39) ||
+      (cp >= 0x41 && cp <= 0x5a) ||
+      (cp >= 0x61 && cp <= 0x7a) ||
+      cp === 0x27 ||
+      cp === 0x2d ||
+      cp === 0x5f
+    )) {
+      return false
+    }
+  }
+
+  return true
+}
+
+/**
+ * @see https://andreubotella.github.io/multipart-form-data/#multipart-form-data-parser
+ * @param {Buffer} input
+ * @param {ReturnType<import('./data-url')['parseMIMEType']>} mimeType
+ */
+function multipartFormDataParser (input, mimeType) {
+  // 1. Assert: mimeType’s essence is "multipart/form-data".
+  assert(mimeType !== 'failure' && mimeType.essence === 'multipart/form-data')
+
+  const boundaryString = mimeType.parameters.get('boundary')
+
+  // 2. If mimeType’s parameters["boundary"] does not exist, return failure.
+  //    Otherwise, let boundary be the result of UTF-8 decoding mimeType’s
+  //    parameters["boundary"].
+  if (boundaryString === undefined) {
+    return 'failure'
+  }
+
+  const boundary = Buffer.from(`--${boundaryString}`, 'utf8')
+
+  // 3. Let entry list be an empty entry list.
+  const entryList = []
+
+  // 4. Let position be a pointer to a byte in input, initially pointing at
+  //    the first byte.
+  const position = { position: 0 }
+
+  // Note: undici addition, allows leading and trailing CRLFs.
+  while (input[position.position] === 0x0d && input[position.position + 1] === 0x0a) {
+    position.position += 2
+  }
+
+  let trailing = input.length
+
+  while (input[trailing - 1] === 0x0a && input[trailing - 2] === 0x0d) {
+    trailing -= 2
+  }
+
+  if (trailing !== input.length) {
+    input = input.subarray(0, trailing)
+  }
+
+  // 5. While true:
+  while (true) {
+    // 5.1. If position points to a sequence of bytes starting with 0x2D 0x2D
+    //      (`--`) followed by boundary, advance position by 2 + the length of
+    //      boundary. Otherwise, return failure.
+    // Note: boundary is padded with 2 dashes already, no need to add 2.
+    if (input.subarray(position.position, position.position + boundary.length).equals(boundary)) {
+      position.position += boundary.length
+    } else {
+      return 'failure'
+    }
+
+    // 5.2. If position points to the sequence of bytes 0x2D 0x2D 0x0D 0x0A
+    //      (`--` followed by CR LF) followed by the end of input, return entry list.
+    // Note: a body does NOT need to end with CRLF. It can end with --.
+    if (
+      (position.position === input.length - 2 && bufferStartsWith(input, dd, position)) ||
+      (position.position === input.length - 4 && bufferStartsWith(input, ddcrlf, position))
+    ) {
+      return entryList
+    }
+
+    // 5.3. If position does not point to a sequence of bytes starting with 0x0D
+    //      0x0A (CR LF), return failure.
+    if (input[position.position] !== 0x0d || input[position.position + 1] !== 0x0a) {
+      return 'failure'
+    }
+
+    // 5.4. Advance position by 2. (This skips past the newline.)
+    position.position += 2
+
+    // 5.5. Let name, filename and contentType be the result of parsing
+    //      multipart/form-data headers on input and position, if the result
+    //      is not failure. Otherwise, return failure.
+    const result = parseMultipartFormDataHeaders(input, position)
+
+    if (result === 'failure') {
+      return 'failure'
+    }
+
+    let { name, filename, contentType, encoding } = result
+
+    // 5.6. Advance position by 2. (This skips past the empty line that marks
+    //      the end of the headers.)
+    position.position += 2
+
+    // 5.7. Let body be the empty byte sequence.
+    let body
+
+    // 5.8. Body loop: While position is not past the end of input:
+    // TODO: the steps here are completely wrong
+    {
+      const boundaryIndex = input.indexOf(boundary.subarray(2), position.position)
+
+      if (boundaryIndex === -1) {
+        return 'failure'
+      }
+
+      body = input.subarray(position.position, boundaryIndex - 4)
+
+      position.position += body.length
+
+      // Note: position must be advanced by the body's length before being
+      // decoded, otherwise the parsing will fail.
+      if (encoding === 'base64') {
+        body = Buffer.from(body.toString(), 'base64')
+      }
+    }
+
+    // 5.9. If position does not point to a sequence of bytes starting with
+    //      0x0D 0x0A (CR LF), return failure. Otherwise, advance position by 2.
+    if (input[position.position] !== 0x0d || input[position.position + 1] !== 0x0a) {
+      return 'failure'
+    } else {
+      position.position += 2
+    }
+
+    // 5.10. If filename is not null:
+    let value
+
+    if (filename !== null) {
+      // 5.10.1. If contentType is null, set contentType to "text/plain".
+      contentType ??= 'text/plain'
+
+      // 5.10.2. If contentType is not an ASCII string, set contentType to the empty string.
+
+      // Note: `buffer.isAscii` can be used at zero-cost, but converting a string to a buffer is a high overhead.
+      // Content-Type is a relatively small string, so it is faster to use `String#charCodeAt`.
+      if (!isAsciiString(contentType)) {
+        contentType = ''
+      }
+
+      // 5.10.3. Let value be a new File object with name filename, type contentType, and body body.
+      value = new File([body], filename, { type: contentType })
+    } else {
+      // 5.11. Otherwise:
+
+      // 5.11.1. Let value be the UTF-8 decoding without BOM of body.
+      value = utf8DecodeBytes(Buffer.from(body))
+    }
+
+    // 5.12. Assert: name is a scalar value string and value is either a scalar value string or a File object.
+    assert(isUSVString(name))
+    assert((typeof value === 'string' && isUSVString(value)) || isFileLike(value))
+
+    // 5.13. Create an entry with name and value, and append it to entry list.
+    entryList.push(makeEntry(name, value, filename))
+  }
+}
+
+/**
+ * @see https://andreubotella.github.io/multipart-form-data/#parse-multipart-form-data-headers
+ * @param {Buffer} input
+ * @param {{ position: number }} position
+ */
+function parseMultipartFormDataHeaders (input, position) {
+  // 1. Let name, filename and contentType be null.
+  let name = null
+  let filename = null
+  let contentType = null
+  let encoding = null
+
+  // 2. While true:
+  while (true) {
+    // 2.1. If position points to a sequence of bytes starting with 0x0D 0x0A (CR LF):
+    if (input[position.position] === 0x0d && input[position.position + 1] === 0x0a) {
+      // 2.1.1. If name is null, return failure.
+      if (name === null) {
+        return 'failure'
+      }
+
+      // 2.1.2. Return name, filename and contentType.
+      return { name, filename, contentType, encoding }
+    }
+
+    // 2.2. Let header name be the result of collecting a sequence of bytes that are
+    //      not 0x0A (LF), 0x0D (CR) or 0x3A (:), given position.
+    let headerName = collectASequenceOfBytes(
+      (char) => char !== 0x0a && char !== 0x0d && char !== 0x3a,
+      input,
+      position
+    )
+
+    // 2.3. Remove any HTTP tab or space bytes from the start or end of header name.
+    headerName = removeChars(headerName, true, true, (char) => char === 0x9 || char === 0x20)
+
+    // 2.4. If header name does not match the field-name token production, return failure.
+    if (!HTTP_TOKEN_CODEPOINTS.test(headerName.toString())) {
+      return 'failure'
+    }
+
+    // 2.5. If the byte at position is not 0x3A (:), return failure.
+    if (input[position.position] !== 0x3a) {
+      return 'failure'
+    }
+
+    // 2.6. Advance position by 1.
+    position.position++
+
+    // 2.7. Collect a sequence of bytes that are HTTP tab or space bytes given position.
+    //      (Do nothing with those bytes.)
+    collectASequenceOfBytes(
+      (char) => char === 0x20 || char === 0x09,
+      input,
+      position
+    )
+
+    // 2.8. Byte-lowercase header name and switch on the result:
+    switch (bufferToLowerCasedHeaderName(headerName)) {
+      case 'content-disposition': {
+        // 1. Set name and filename to null.
+        name = filename = null
+
+        // 2. If position does not point to a sequence of bytes starting with
+        //    `form-data; name="`, return failure.
+        if (!bufferStartsWith(input, formDataNameBuffer, position)) {
+          return 'failure'
+        }
+
+        // 3. Advance position so it points at the byte after the next 0x22 (")
+        //    byte (the one in the sequence of bytes matched above).
+        position.position += 17
+
+        // 4. Set name to the result of parsing a multipart/form-data name given
+        //    input and position, if the result is not failure. Otherwise, return
+        //    failure.
+        name = parseMultipartFormDataName(input, position)
+
+        if (name === null) {
+          return 'failure'
+        }
+
+        // 5. If position points to a sequence of bytes starting with `; filename="`:
+        if (bufferStartsWith(input, filenameBuffer, position)) {
+          // Note: undici also handles filename*
+          let check = position.position + filenameBuffer.length
+
+          if (input[check] === 0x2a) {
+            position.position += 1
+            check += 1
+          }
+
+          if (input[check] !== 0x3d || input[check + 1] !== 0x22) { // ="
+            return 'failure'
+          }
+
+          // 1. Advance position so it points at the byte after the next 0x22 (") byte
+          //    (the one in the sequence of bytes matched above).
+          position.position += 12
+
+          // 2. Set filename to the result of parsing a multipart/form-data name given
+          //    input and position, if the result is not failure. Otherwise, return failure.
+          filename = parseMultipartFormDataName(input, position)
+
+          if (filename === null) {
+            return 'failure'
+          }
+        }
+
+        break
+      }
+      case 'content-type': {
+        // 1. Let header value be the result of collecting a sequence of bytes that are
+        //    not 0x0A (LF) or 0x0D (CR), given position.
+        let headerValue = collectASequenceOfBytes(
+          (char) => char !== 0x0a && char !== 0x0d,
+          input,
+          position
+        )
+
+        // 2. Remove any HTTP tab or space bytes from the end of header value.
+        headerValue = removeChars(headerValue, false, true, (char) => char === 0x9 || char === 0x20)
+
+        // 3. Set contentType to the isomorphic decoding of header value.
+        contentType = isomorphicDecode(headerValue)
+
+        break
+      }
+      case 'content-transfer-encoding': {
+        let headerValue = collectASequenceOfBytes(
+          (char) => char !== 0x0a && char !== 0x0d,
+          input,
+          position
+        )
+
+        headerValue = removeChars(headerValue, false, true, (char) => char === 0x9 || char === 0x20)
+
+        encoding = isomorphicDecode(headerValue)
+
+        break
+      }
+      default: {
+        // Collect a sequence of bytes that are not 0x0A (LF) or 0x0D (CR), given position.
+        // (Do nothing with those bytes.)
+        collectASequenceOfBytes(
+          (char) => char !== 0x0a && char !== 0x0d,
+          input,
+          position
+        )
+      }
+    }
+
+    // 2.9. If position does not point to a sequence of bytes starting with 0x0D 0x0A
+    //      (CR LF), return failure. Otherwise, advance position by 2 (past the newline).
+    if (input[position.position] !== 0x0d && input[position.position + 1] !== 0x0a) {
+      return 'failure'
+    } else {
+      position.position += 2
+    }
+  }
+}
+
+/**
+ * @see https://andreubotella.github.io/multipart-form-data/#parse-a-multipart-form-data-name
+ * @param {Buffer} input
+ * @param {{ position: number }} position
+ */
+function parseMultipartFormDataName (input, position) {
+  // 1. Assert: The byte at (position - 1) is 0x22 (").
+  assert(input[position.position - 1] === 0x22)
+
+  // 2. Let name be the result of collecting a sequence of bytes that are not 0x0A (LF), 0x0D (CR) or 0x22 ("), given position.
+  /** @type {string | Buffer} */
+  let name = collectASequenceOfBytes(
+    (char) => char !== 0x0a && char !== 0x0d && char !== 0x22,
+    input,
+    position
+  )
+
+  // 3. If the byte at position is not 0x22 ("), return failure. Otherwise, advance position by 1.
+  if (input[position.position] !== 0x22) {
+    return null // name could be 'failure'
+  } else {
+    position.position++
+  }
+
+  // 4. Replace any occurrence of the following subsequences in name with the given byte:
+  // - `%0A`: 0x0A (LF)
+  // - `%0D`: 0x0D (CR)
+  // - `%22`: 0x22 (")
+  name = new TextDecoder().decode(name)
+    .replace(/%0A/ig, '\n')
+    .replace(/%0D/ig, '\r')
+    .replace(/%22/g, '"')
+
+  // 5. Return the UTF-8 decoding without BOM of name.
+  return name
+}
+
+/**
+ * @param {(char: number) => boolean} condition
+ * @param {Buffer} input
+ * @param {{ position: number }} position
+ */
+function collectASequenceOfBytes (condition, input, position) {
+  let start = position.position
+
+  while (start < input.length && condition(input[start])) {
+    ++start
+  }
+
+  return input.subarray(position.position, (position.position = start))
+}
+
+/**
+ * @param {Buffer} buf
+ * @param {boolean} leading
+ * @param {boolean} trailing
+ * @param {(charCode: number) => boolean} predicate
+ * @returns {Buffer}
+ */
+function removeChars (buf, leading, trailing, predicate) {
+  let lead = 0
+  let trail = buf.length - 1
+
+  if (leading) {
+    while (lead < buf.length && predicate(buf[lead])) lead++
+  }
+
+  if (trailing) {
+    while (trail > 0 && predicate(buf[trail])) trail--
+  }
+
+  return lead === 0 && trail === buf.length - 1 ? buf : buf.subarray(lead, trail + 1)
+}
+
+/**
+ * Checks if {@param buffer} starts with {@param start}
+ * @param {Buffer} buffer
+ * @param {Buffer} start
+ * @param {{ position: number }} position
+ */
+function bufferStartsWith (buffer, start, position) {
+  if (buffer.length < start.length) {
+    return false
+  }
+
+  for (let i = 0; i < start.length; i++) {
+    if (start[i] !== buffer[position.position + i]) {
+      return false
+    }
+  }
+
+  return true
+}
+
+module.exports = {
+  multipartFormDataParser,
+  validateBoundary
+}

extracted-source/node_modules/undici/lib/web/fetch/formdata.js

@@ -0,0 +1,252 @@
+'use strict'
+
+const { isBlobLike, iteratorMixin } = require('./util')
+const { kState } = require('./symbols')
+const { kEnumerableProperty } = require('../../core/util')
+const { FileLike, isFileLike } = require('./file')
+const { webidl } = require('./webidl')
+const { File: NativeFile } = require('node:buffer')
+const nodeUtil = require('node:util')
+
+/** @type {globalThis['File']} */
+const File = globalThis.File ?? NativeFile
+
+// https://xhr.spec.whatwg.org/#formdata
+class FormData {
+  constructor (form) {
+    webidl.util.markAsUncloneable(this)
+
+    if (form !== undefined) {
+      throw webidl.errors.conversionFailed({
+        prefix: 'FormData constructor',
+        argument: 'Argument 1',
+        types: ['undefined']
+      })
+    }
+
+    this[kState] = []
+  }
+
+  append (name, value, filename = undefined) {
+    webidl.brandCheck(this, FormData)
+
+    const prefix = 'FormData.append'
+    webidl.argumentLengthCheck(arguments, 2, prefix)
+
+    if (arguments.length === 3 && !isBlobLike(value)) {
+      throw new TypeError(
+        "Failed to execute 'append' on 'FormData': parameter 2 is not of type 'Blob'"
+      )
+    }
+
+    // 1. Let value be value if given; otherwise blobValue.
+
+    name = webidl.converters.USVString(name, prefix, 'name')
+    value = isBlobLike(value)
+      ? webidl.converters.Blob(value, prefix, 'value', { strict: false })
+      : webidl.converters.USVString(value, prefix, 'value')
+    filename = arguments.length === 3
+      ? webidl.converters.USVString(filename, prefix, 'filename')
+      : undefined
+
+    // 2. Let entry be the result of creating an entry with
+    // name, value, and filename if given.
+    const entry = makeEntry(name, value, filename)
+
+    // 3. Append entry to this’s entry list.
+    this[kState].push(entry)
+  }
+
+  delete (name) {
+    webidl.brandCheck(this, FormData)
+
+    const prefix = 'FormData.delete'
+    webidl.argumentLengthCheck(arguments, 1, prefix)
+
+    name = webidl.converters.USVString(name, prefix, 'name')
+
+    // The delete(name) method steps are to remove all entries whose name
+    // is name from this’s entry list.
+    this[kState] = this[kState].filter(entry => entry.name !== name)
+  }
+
+  get (name) {
+    webidl.brandCheck(this, FormData)
+
+    const prefix = 'FormData.get'
+    webidl.argumentLengthCheck(arguments, 1, prefix)
+
+    name = webidl.converters.USVString(name, prefix, 'name')
+
+    // 1. If there is no entry whose name is name in this’s entry list,
+    // then return null.
+    const idx = this[kState].findIndex((entry) => entry.name === name)
+    if (idx === -1) {
+      return null
+    }
+
+    // 2. Return the value of the first entry whose name is name from
+    // this’s entry list.
+    return this[kState][idx].value
+  }
+
+  getAll (name) {
+    webidl.brandCheck(this, FormData)
+
+    const prefix = 'FormData.getAll'
+    webidl.argumentLengthCheck(arguments, 1, prefix)
+
+    name = webidl.converters.USVString(name, prefix, 'name')
+
+    // 1. If there is no entry whose name is name in this’s entry list,
+    // then return the empty list.
+    // 2. Return the values of all entries whose name is name, in order,
+    // from this’s entry list.
+    return this[kState]
+      .filter((entry) => entry.name === name)
+      .map((entry) => entry.value)
+  }
+
+  has (name) {
+    webidl.brandCheck(this, FormData)
+
+    const prefix = 'FormData.has'
+    webidl.argumentLengthCheck(arguments, 1, prefix)
+
+    name = webidl.converters.USVString(name, prefix, 'name')
+
+    // The has(name) method steps are to return true if there is an entry
+    // whose name is name in this’s entry list; otherwise false.
+    return this[kState].findIndex((entry) => entry.name === name) !== -1
+  }
+
+  set (name, value, filename = undefined) {
+    webidl.brandCheck(this, FormData)
+
+    const prefix = 'FormData.set'
+    webidl.argumentLengthCheck(arguments, 2, prefix)
+
+    if (arguments.length === 3 && !isBlobLike(value)) {
+      throw new TypeError(
+        "Failed to execute 'set' on 'FormData': parameter 2 is not of type 'Blob'"
+      )
+    }
+
+    // The set(name, value) and set(name, blobValue, filename) method steps
+    // are:
+
+    // 1. Let value be value if given; otherwise blobValue.
+
+    name = webidl.converters.USVString(name, prefix, 'name')
+    value = isBlobLike(value)
+      ? webidl.converters.Blob(value, prefix, 'name', { strict: false })
+      : webidl.converters.USVString(value, prefix, 'name')
+    filename = arguments.length === 3
+      ? webidl.converters.USVString(filename, prefix, 'name')
+      : undefined
+
+    // 2. Let entry be the result of creating an entry with name, value, and
+    // filename if given.
+    const entry = makeEntry(name, value, filename)
+
+    // 3. If there are entries in this’s entry list whose name is name, then
+    // replace the first such entry with entry and remove the others.
+    const idx = this[kState].findIndex((entry) => entry.name === name)
+    if (idx !== -1) {
+      this[kState] = [
+        ...this[kState].slice(0, idx),
+        entry,
+        ...this[kState].slice(idx + 1).filter((entry) => entry.name !== name)
+      ]
+    } else {
+      // 4. Otherwise, append entry to this’s entry list.
+      this[kState].push(entry)
+    }
+  }
+
+  [nodeUtil.inspect.custom] (depth, options) {
+    const state = this[kState].reduce((a, b) => {
+      if (a[b.name]) {
+        if (Array.isArray(a[b.name])) {
+          a[b.name].push(b.value)
+        } else {
+          a[b.name] = [a[b.name], b.value]
+        }
+      } else {
+        a[b.name] = b.value
+      }
+
+      return a
+    }, { __proto__: null })
+
+    options.depth ??= depth
+    options.colors ??= true
+
+    const output = nodeUtil.formatWithOptions(options, state)
+
+    // remove [Object null prototype]
+    return `FormData ${output.slice(output.indexOf(']') + 2)}`
+  }
+}
+
+iteratorMixin('FormData', FormData, kState, 'name', 'value')
+
+Object.defineProperties(FormData.prototype, {
+  append: kEnumerableProperty,
+  delete: kEnumerableProperty,
+  get: kEnumerableProperty,
+  getAll: kEnumerableProperty,
+  has: kEnumerableProperty,
+  set: kEnumerableProperty,
+  [Symbol.toStringTag]: {
+    value: 'FormData',
+    configurable: true
+  }
+})
+
+/**
+ * @see https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#create-an-entry
+ * @param {string} name
+ * @param {string|Blob} value
+ * @param {?string} filename
+ * @returns
+ */
+function makeEntry (name, value, filename) {
+  // 1. Set name to the result of converting name into a scalar value string.
+  // Note: This operation was done by the webidl converter USVString.
+
+  // 2. If value is a string, then set value to the result of converting
+  //    value into a scalar value string.
+  if (typeof value === 'string') {
+    // Note: This operation was done by the webidl converter USVString.
+  } else {
+    // 3. Otherwise:
+
+    // 1. If value is not a File object, then set value to a new File object,
+    //    representing the same bytes, whose name attribute value is "blob"
+    if (!isFileLike(value)) {
+      value = value instanceof Blob
+        ? new File([value], 'blob', { type: value.type })
+        : new FileLike(value, 'blob', { type: value.type })
+    }
+
+    // 2. If filename is given, then set value to a new File object,
+    //    representing the same bytes, whose name attribute is filename.
+    if (filename !== undefined) {
+      /** @type {FilePropertyBag} */
+      const options = {
+        type: value.type,
+        lastModified: value.lastModified
+      }
+
+      value = value instanceof NativeFile
+        ? new File([value], filename, options)
+        : new FileLike(value, filename, options)
+    }
+  }
+
+  // 4. Return an entry whose name is name and whose value is value.
+  return { name, value }
+}
+
+module.exports = { FormData, makeEntry }

extracted-source/node_modules/undici/lib/web/fetch/global.js

@@ -0,0 +1,40 @@
+'use strict'
+
+// In case of breaking changes, increase the version
+// number to avoid conflicts.
+const globalOrigin = Symbol.for('undici.globalOrigin.1')
+
+function getGlobalOrigin () {
+  return globalThis[globalOrigin]
+}
+
+function setGlobalOrigin (newOrigin) {
+  if (newOrigin === undefined) {
+    Object.defineProperty(globalThis, globalOrigin, {
+      value: undefined,
+      writable: true,
+      enumerable: false,
+      configurable: false
+    })
+
+    return
+  }
+
+  const parsedURL = new URL(newOrigin)
+
+  if (parsedURL.protocol !== 'http:' && parsedURL.protocol !== 'https:') {
+    throw new TypeError(`Only http & https urls are allowed, received ${parsedURL.protocol}`)
+  }
+
+  Object.defineProperty(globalThis, globalOrigin, {
+    value: parsedURL,
+    writable: true,
+    enumerable: false,
+    configurable: false
+  })
+}
+
+module.exports = {
+  getGlobalOrigin,
+  setGlobalOrigin
+}

extracted-source/node_modules/undici/lib/web/fetch/headers.js

@@ -0,0 +1,687 @@
+// https://github.com/Ethan-Arrowood/undici-fetch
+
+'use strict'
+
+const { kConstruct } = require('../../core/symbols')
+const { kEnumerableProperty } = require('../../core/util')
+const {
+  iteratorMixin,
+  isValidHeaderName,
+  isValidHeaderValue
+} = require('./util')
+const { webidl } = require('./webidl')
+const assert = require('node:assert')
+const util = require('node:util')
+
+const kHeadersMap = Symbol('headers map')
+const kHeadersSortedMap = Symbol('headers map sorted')
+
+/**
+ * @param {number} code
+ */
+function isHTTPWhiteSpaceCharCode (code) {
+  return code === 0x00a || code === 0x00d || code === 0x009 || code === 0x020
+}
+
+/**
+ * @see https://fetch.spec.whatwg.org/#concept-header-value-normalize
+ * @param {string} potentialValue
+ */
+function headerValueNormalize (potentialValue) {
+  //  To normalize a byte sequence potentialValue, remove
+  //  any leading and trailing HTTP whitespace bytes from
+  //  potentialValue.
+  let i = 0; let j = potentialValue.length
+
+  while (j > i && isHTTPWhiteSpaceCharCode(potentialValue.charCodeAt(j - 1))) --j
+  while (j > i && isHTTPWhiteSpaceCharCode(potentialValue.charCodeAt(i))) ++i
+
+  return i === 0 && j === potentialValue.length ? potentialValue : potentialValue.substring(i, j)
+}
+
+function fill (headers, object) {
+  // To fill a Headers object headers with a given object object, run these steps:
+
+  // 1. If object is a sequence, then for each header in object:
+  // Note: webidl conversion to array has already been done.
+  if (Array.isArray(object)) {
+    for (let i = 0; i < object.length; ++i) {
+      const header = object[i]
+      // 1. If header does not contain exactly two items, then throw a TypeError.
+      if (header.length !== 2) {
+        throw webidl.errors.exception({
+          header: 'Headers constructor',
+          message: `expected name/value pair to be length 2, found ${header.length}.`
+        })
+      }
+
+      // 2. Append (header’s first item, header’s second item) to headers.
+      appendHeader(headers, header[0], header[1])
+    }
+  } else if (typeof object === 'object' && object !== null) {
+    // Note: null should throw
+
+    // 2. Otherwise, object is a record, then for each key → value in object,
+    //    append (key, value) to headers
+    const keys = Object.keys(object)
+    for (let i = 0; i < keys.length; ++i) {
+      appendHeader(headers, keys[i], object[keys[i]])
+    }
+  } else {
+    throw webidl.errors.conversionFailed({
+      prefix: 'Headers constructor',
+      argument: 'Argument 1',
+      types: ['sequence<sequence<ByteString>>', 'record<ByteString, ByteString>']
+    })
+  }
+}
+
+/**
+ * @see https://fetch.spec.whatwg.org/#concept-headers-append
+ */
+function appendHeader (headers, name, value) {
+  // 1. Normalize value.
+  value = headerValueNormalize(value)
+
+  // 2. If name is not a header name or value is not a
+  //    header value, then throw a TypeError.
+  if (!isValidHeaderName(name)) {
+    throw webidl.errors.invalidArgument({
+      prefix: 'Headers.append',
+      value: name,
+      type: 'header name'
+    })
+  } else if (!isValidHeaderValue(value)) {
+    throw webidl.errors.invalidArgument({
+      prefix: 'Headers.append',
+      value,
+      type: 'header value'
+    })
+  }
+
+  // 3. If headers’s guard is "immutable", then throw a TypeError.
+  // 4. Otherwise, if headers’s guard is "request" and name is a
+  //    forbidden header name, return.
+  // 5. Otherwise, if headers’s guard is "request-no-cors":
+  //    TODO
+  // Note: undici does not implement forbidden header names
+  if (getHeadersGuard(headers) === 'immutable') {
+    throw new TypeError('immutable')
+  }
+
+  // 6. Otherwise, if headers’s guard is "response" and name is a
+  //    forbidden response-header name, return.
+
+  // 7. Append (name, value) to headers’s header list.
+  return getHeadersList(headers).append(name, value, false)
+
+  // 8. If headers’s guard is "request-no-cors", then remove
+  //    privileged no-CORS request headers from headers
+}
+
+function compareHeaderName (a, b) {
+  return a[0] < b[0] ? -1 : 1
+}
+
+class HeadersList {
+  /** @type {[string, string][]|null} */
+  cookies = null
+
+  constructor (init) {
+    if (init instanceof HeadersList) {
+      this[kHeadersMap] = new Map(init[kHeadersMap])
+      this[kHeadersSortedMap] = init[kHeadersSortedMap]
+      this.cookies = init.cookies === null ? null : [...init.cookies]
+    } else {
+      this[kHeadersMap] = new Map(init)
+      this[kHeadersSortedMap] = null
+    }
+  }
+
+  /**
+   * @see https://fetch.spec.whatwg.org/#header-list-contains
+   * @param {string} name
+   * @param {boolean} isLowerCase
+   */
+  contains (name, isLowerCase) {
+    // A header list list contains a header name name if list
+    // contains a header whose name is a byte-case-insensitive
+    // match for name.
+
+    return this[kHeadersMap].has(isLowerCase ? name : name.toLowerCase())
+  }
+
+  clear () {
+    this[kHeadersMap].clear()
+    this[kHeadersSortedMap] = null
+    this.cookies = null
+  }
+
+  /**
+   * @see https://fetch.spec.whatwg.org/#concept-header-list-append
+   * @param {string} name
+   * @param {string} value
+   * @param {boolean} isLowerCase
+   */
+  append (name, value, isLowerCase) {
+    this[kHeadersSortedMap] = null
+
+    // 1. If list contains name, then set name to the first such
+    //    header’s name.
+    const lowercaseName = isLowerCase ? name : name.toLowerCase()
+    const exists = this[kHeadersMap].get(lowercaseName)
+
+    // 2. Append (name, value) to list.
+    if (exists) {
+      const delimiter = lowercaseName === 'cookie' ? '; ' : ', '
+      this[kHeadersMap].set(lowercaseName, {
+        name: exists.name,
+        value: `${exists.value}${delimiter}${value}`
+      })
+    } else {
+      this[kHeadersMap].set(lowercaseName, { name, value })
+    }
+
+    if (lowercaseName === 'set-cookie') {
+      (this.cookies ??= []).push(value)
+    }
+  }
+
+  /**
+   * @see https://fetch.spec.whatwg.org/#concept-header-list-set
+   * @param {string} name
+   * @param {string} value
+   * @param {boolean} isLowerCase
+   */
+  set (name, value, isLowerCase) {
+    this[kHeadersSortedMap] = null
+    const lowercaseName = isLowerCase ? name : name.toLowerCase()
+
+    if (lowercaseName === 'set-cookie') {
+      this.cookies = [value]
+    }
+
+    // 1. If list contains name, then set the value of
+    //    the first such header to value and remove the
+    //    others.
+    // 2. Otherwise, append header (name, value) to list.
+    this[kHeadersMap].set(lowercaseName, { name, value })
+  }
+
+  /**
+   * @see https://fetch.spec.whatwg.org/#concept-header-list-delete
+   * @param {string} name
+   * @param {boolean} isLowerCase
+   */
+  delete (name, isLowerCase) {
+    this[kHeadersSortedMap] = null
+    if (!isLowerCase) name = name.toLowerCase()
+
+    if (name === 'set-cookie') {
+      this.cookies = null
+    }
+
+    this[kHeadersMap].delete(name)
+  }
+
+  /**
+   * @see https://fetch.spec.whatwg.org/#concept-header-list-get
+   * @param {string} name
+   * @param {boolean} isLowerCase
+   * @returns {string | null}
+   */
+  get (name, isLowerCase) {
+    // 1. If list does not contain name, then return null.
+    // 2. Return the values of all headers in list whose name
+    //    is a byte-case-insensitive match for name,
+    //    separated from each other by 0x2C 0x20, in order.
+    return this[kHeadersMap].get(isLowerCase ? name : name.toLowerCase())?.value ?? null
+  }
+
+  * [Symbol.iterator] () {
+    // use the lowercased name
+    for (const { 0: name, 1: { value } } of this[kHeadersMap]) {
+      yield [name, value]
+    }
+  }
+
+  get entries () {
+    const headers = {}
+
+    if (this[kHeadersMap].size !== 0) {
+      for (const { name, value } of this[kHeadersMap].values()) {
+        headers[name] = value
+      }
+    }
+
+    return headers
+  }
+
+  rawValues () {
+    return this[kHeadersMap].values()
+  }
+
+  get entriesList () {
+    const headers = []
+
+    if (this[kHeadersMap].size !== 0) {
+      for (const { 0: lowerName, 1: { name, value } } of this[kHeadersMap]) {
+        if (lowerName === 'set-cookie') {
+          for (const cookie of this.cookies) {
+            headers.push([name, cookie])
+          }
+        } else {
+          headers.push([name, value])
+        }
+      }
+    }
+
+    return headers
+  }
+
+  // https://fetch.spec.whatwg.org/#convert-header-names-to-a-sorted-lowercase-set
+  toSortedArray () {
+    const size = this[kHeadersMap].size
+    const array = new Array(size)
+    // In most cases, you will use the fast-path.
+    // fast-path: Use binary insertion sort for small arrays.
+    if (size <= 32) {
+      if (size === 0) {
+        // If empty, it is an empty array. To avoid the first index assignment.
+        return array
+      }
+      // Improve performance by unrolling loop and avoiding double-loop.
+      // Double-loop-less version of the binary insertion sort.
+      const iterator = this[kHeadersMap][Symbol.iterator]()
+      const firstValue = iterator.next().value
+      // set [name, value] to first index.
+      array[0] = [firstValue[0], firstValue[1].value]
+      // https://fetch.spec.whatwg.org/#concept-header-list-sort-and-combine
+      // 3.2.2. Assert: value is non-null.
+      assert(firstValue[1].value !== null)
+      for (
+        let i = 1, j = 0, right = 0, left = 0, pivot = 0, x, value;
+        i < size;
+        ++i
+      ) {
+        // get next value
+        value = iterator.next().value
+        // set [name, value] to current index.
+        x = array[i] = [value[0], value[1].value]
+        // https://fetch.spec.whatwg.org/#concept-header-list-sort-and-combine
+        // 3.2.2. Assert: value is non-null.
+        assert(x[1] !== null)
+        left = 0
+        right = i
+        // binary search
+        while (left < right) {
+          // middle index
+          pivot = left + ((right - left) >> 1)
+          // compare header name
+          if (array[pivot][0] <= x[0]) {
+            left = pivot + 1
+          } else {
+            right = pivot
+          }
+        }
+        if (i !== pivot) {
+          j = i
+          while (j > left) {
+            array[j] = array[--j]
+          }
+          array[left] = x
+        }
+      }
+      /* c8 ignore next 4 */
+      if (!iterator.next().done) {
+        // This is for debugging and will never be called.
+        throw new TypeError('Unreachable')
+      }
+      return array
+    } else {
+      // This case would be a rare occurrence.
+      // slow-path: fallback
+      let i = 0
+      for (const { 0: name, 1: { value } } of this[kHeadersMap]) {
+        array[i++] = [name, value]
+        // https://fetch.spec.whatwg.org/#concept-header-list-sort-and-combine
+        // 3.2.2. Assert: value is non-null.
+        assert(value !== null)
+      }
+      return array.sort(compareHeaderName)
+    }
+  }
+}
+
+// https://fetch.spec.whatwg.org/#headers-class
+class Headers {
+  #guard
+  #headersList
+
+  constructor (init = undefined) {
+    webidl.util.markAsUncloneable(this)
+
+    if (init === kConstruct) {
+      return
+    }
+
+    this.#headersList = new HeadersList()
+
+    // The new Headers(init) constructor steps are:
+
+    // 1. Set this’s guard to "none".
+    this.#guard = 'none'
+
+    // 2. If init is given, then fill this with init.
+    if (init !== undefined) {
+      init = webidl.converters.HeadersInit(init, 'Headers contructor', 'init')
+      fill(this, init)
+    }
+  }
+
+  // https://fetch.spec.whatwg.org/#dom-headers-append
+  append (name, value) {
+    webidl.brandCheck(this, Headers)
+
+    webidl.argumentLengthCheck(arguments, 2, 'Headers.append')
+
+    const prefix = 'Headers.append'
+    name = webidl.converters.ByteString(name, prefix, 'name')
+    value = webidl.converters.ByteString(value, prefix, 'value')
+
+    return appendHeader(this, name, value)
+  }
+
+  // https://fetch.spec.whatwg.org/#dom-headers-delete
+  delete (name) {
+    webidl.brandCheck(this, Headers)
+
+    webidl.argumentLengthCheck(arguments, 1, 'Headers.delete')
+
+    const prefix = 'Headers.delete'
+    name = webidl.converters.ByteString(name, prefix, 'name')
+
+    // 1. If name is not a header name, then throw a TypeError.
+    if (!isValidHeaderName(name)) {
+      throw webidl.errors.invalidArgument({
+        prefix: 'Headers.delete',
+        value: name,
+        type: 'header name'
+      })
+    }
+
+    // 2. If this’s guard is "immutable", then throw a TypeError.
+    // 3. Otherwise, if this’s guard is "request" and name is a
+    //    forbidden header name, return.
+    // 4. Otherwise, if this’s guard is "request-no-cors", name
+    //    is not a no-CORS-safelisted request-header name, and
+    //    name is not a privileged no-CORS request-header name,
+    //    return.
+    // 5. Otherwise, if this’s guard is "response" and name is
+    //    a forbidden response-header name, return.
+    // Note: undici does not implement forbidden header names
+    if (this.#guard === 'immutable') {
+      throw new TypeError('immutable')
+    }
+
+    // 6. If this’s header list does not contain name, then
+    //    return.
+    if (!this.#headersList.contains(name, false)) {
+      return
+    }
+
+    // 7. Delete name from this’s header list.
+    // 8. If this’s guard is "request-no-cors", then remove
+    //    privileged no-CORS request headers from this.
+    this.#headersList.delete(name, false)
+  }
+
+  // https://fetch.spec.whatwg.org/#dom-headers-get
+  get (name) {
+    webidl.brandCheck(this, Headers)
+
+    webidl.argumentLengthCheck(arguments, 1, 'Headers.get')
+
+    const prefix = 'Headers.get'
+    name = webidl.converters.ByteString(name, prefix, 'name')
+
+    // 1. If name is not a header name, then throw a TypeError.
+    if (!isValidHeaderName(name)) {
+      throw webidl.errors.invalidArgument({
+        prefix,
+        value: name,
+        type: 'header name'
+      })
+    }
+
+    // 2. Return the result of getting name from this’s header
+    //    list.
+    return this.#headersList.get(name, false)
+  }
+
+  // https://fetch.spec.whatwg.org/#dom-headers-has
+  has (name) {
+    webidl.brandCheck(this, Headers)
+
+    webidl.argumentLengthCheck(arguments, 1, 'Headers.has')
+
+    const prefix = 'Headers.has'
+    name = webidl.converters.ByteString(name, prefix, 'name')
+
+    // 1. If name is not a header name, then throw a TypeError.
+    if (!isValidHeaderName(name)) {
+      throw webidl.errors.invalidArgument({
+        prefix,
+        value: name,
+        type: 'header name'
+      })
+    }
+
+    // 2. Return true if this’s header list contains name;
+    //    otherwise false.
+    return this.#headersList.contains(name, false)
+  }
+
+  // https://fetch.spec.whatwg.org/#dom-headers-set
+  set (name, value) {
+    webidl.brandCheck(this, Headers)
+
+    webidl.argumentLengthCheck(arguments, 2, 'Headers.set')
+
+    const prefix = 'Headers.set'
+    name = webidl.converters.ByteString(name, prefix, 'name')
+    value = webidl.converters.ByteString(value, prefix, 'value')
+
+    // 1. Normalize value.
+    value = headerValueNormalize(value)
+
+    // 2. If name is not a header name or value is not a
+    //    header value, then throw a TypeError.
+    if (!isValidHeaderName(name)) {
+      throw webidl.errors.invalidArgument({
+        prefix,
+        value: name,
+        type: 'header name'
+      })
+    } else if (!isValidHeaderValue(value)) {
+      throw webidl.errors.invalidArgument({
+        prefix,
+        value,
+        type: 'header value'
+      })
+    }
+
+    // 3. If this’s guard is "immutable", then throw a TypeError.
+    // 4. Otherwise, if this’s guard is "request" and name is a
+    //    forbidden header name, return.
+    // 5. Otherwise, if this’s guard is "request-no-cors" and
+    //    name/value is not a no-CORS-safelisted request-header,
+    //    return.
+    // 6. Otherwise, if this’s guard is "response" and name is a
+    //    forbidden response-header name, return.
+    // Note: undici does not implement forbidden header names
+    if (this.#guard === 'immutable') {
+      throw new TypeError('immutable')
+    }
+
+    // 7. Set (name, value) in this’s header list.
+    // 8. If this’s guard is "request-no-cors", then remove
+    //    privileged no-CORS request headers from this
+    this.#headersList.set(name, value, false)
+  }
+
+  // https://fetch.spec.whatwg.org/#dom-headers-getsetcookie
+  getSetCookie () {
+    webidl.brandCheck(this, Headers)
+
+    // 1. If this’s header list does not contain `Set-Cookie`, then return « ».
+    // 2. Return the values of all headers in this’s header list whose name is
+    //    a byte-case-insensitive match for `Set-Cookie`, in order.
+
+    const list = this.#headersList.cookies
+
+    if (list) {
+      return [...list]
+    }
+
+    return []
+  }
+
+  // https://fetch.spec.whatwg.org/#concept-header-list-sort-and-combine
+  get [kHeadersSortedMap] () {
+    if (this.#headersList[kHeadersSortedMap]) {
+      return this.#headersList[kHeadersSortedMap]
+    }
+
+    // 1. Let headers be an empty list of headers with the key being the name
+    //    and value the value.
+    const headers = []
+
+    // 2. Let names be the result of convert header names to a sorted-lowercase
+    //    set with all the names of the headers in list.
+    const names = this.#headersList.toSortedArray()
+
+    const cookies = this.#headersList.cookies
+
+    // fast-path
+    if (cookies === null || cookies.length === 1) {
+      // Note: The non-null assertion of value has already been done by `HeadersList#toSortedArray`
+      return (this.#headersList[kHeadersSortedMap] = names)
+    }
+
+    // 3. For each name of names:
+    for (let i = 0; i < names.length; ++i) {
+      const { 0: name, 1: value } = names[i]
+      // 1. If name is `set-cookie`, then:
+      if (name === 'set-cookie') {
+        // 1. Let values be a list of all values of headers in list whose name
+        //    is a byte-case-insensitive match for name, in order.
+
+        // 2. For each value of values:
+        // 1. Append (name, value) to headers.
+        for (let j = 0; j < cookies.length; ++j) {
+          headers.push([name, cookies[j]])
+        }
+      } else {
+        // 2. Otherwise:
+
+        // 1. Let value be the result of getting name from list.
+
+        // 2. Assert: value is non-null.
+        // Note: This operation was done by `HeadersList#toSortedArray`.
+
+        // 3. Append (name, value) to headers.
+        headers.push([name, value])
+      }
+    }
+
+    // 4. Return headers.
+    return (this.#headersList[kHeadersSortedMap] = headers)
+  }
+
+  [util.inspect.custom] (depth, options) {
+    options.depth ??= depth
+
+    return `Headers ${util.formatWithOptions(options, this.#headersList.entries)}`
+  }
+
+  static getHeadersGuard (o) {
+    return o.#guard
+  }
+
+  static setHeadersGuard (o, guard) {
+    o.#guard = guard
+  }
+
+  static getHeadersList (o) {
+    return o.#headersList
+  }
+
+  static setHeadersList (o, list) {
+    o.#headersList = list
+  }
+}
+
+const { getHeadersGuard, setHeadersGuard, getHeadersList, setHeadersList } = Headers
+Reflect.deleteProperty(Headers, 'getHeadersGuard')
+Reflect.deleteProperty(Headers, 'setHeadersGuard')
+Reflect.deleteProperty(Headers, 'getHeadersList')
+Reflect.deleteProperty(Headers, 'setHeadersList')
+
+iteratorMixin('Headers', Headers, kHeadersSortedMap, 0, 1)
+
+Object.defineProperties(Headers.prototype, {
+  append: kEnumerableProperty,
+  delete: kEnumerableProperty,
+  get: kEnumerableProperty,
+  has: kEnumerableProperty,
+  set: kEnumerableProperty,
+  getSetCookie: kEnumerableProperty,
+  [Symbol.toStringTag]: {
+    value: 'Headers',
+    configurable: true
+  },
+  [util.inspect.custom]: {
+    enumerable: false
+  }
+})
+
+webidl.converters.HeadersInit = function (V, prefix, argument) {
+  if (webidl.util.Type(V) === 'Object') {
+    const iterator = Reflect.get(V, Symbol.iterator)
+
+    // A work-around to ensure we send the properly-cased Headers when V is a Headers object.
+    // Read https://github.com/nodejs/undici/pull/3159#issuecomment-2075537226 before touching, please.
+    if (!util.types.isProxy(V) && iterator === Headers.prototype.entries) { // Headers object
+      try {
+        return getHeadersList(V).entriesList
+      } catch {
+        // fall-through
+      }
+    }
+
+    if (typeof iterator === 'function') {
+      return webidl.converters['sequence<sequence<ByteString>>'](V, prefix, argument, iterator.bind(V))
+    }
+
+    return webidl.converters['record<ByteString, ByteString>'](V, prefix, argument)
+  }
+
+  throw webidl.errors.conversionFailed({
+    prefix: 'Headers constructor',
+    argument: 'Argument 1',
+    types: ['sequence<sequence<ByteString>>', 'record<ByteString, ByteString>']
+  })
+}
+
+module.exports = {
+  fill,
+  // for test.
+  compareHeaderName,
+  Headers,
+  HeadersList,
+  getHeadersGuard,
+  setHeadersGuard,
+  setHeadersList,
+  getHeadersList
+}

extracted-source/node_modules/undici/lib/web/fetch/response.js

@@ -0,0 +1,610 @@
+'use strict'
+
+const { Headers, HeadersList, fill, getHeadersGuard, setHeadersGuard, setHeadersList } = require('./headers')
+const { extractBody, cloneBody, mixinBody, hasFinalizationRegistry, streamRegistry, bodyUnusable } = require('./body')
+const util = require('../../core/util')
+const nodeUtil = require('node:util')
+const { kEnumerableProperty } = util
+const {
+  isValidReasonPhrase,
+  isCancelled,
+  isAborted,
+  isBlobLike,
+  serializeJavascriptValueToJSONString,
+  isErrorLike,
+  isomorphicEncode,
+  environmentSettingsObject: relevantRealm
+} = require('./util')
+const {
+  redirectStatusSet,
+  nullBodyStatus
+} = require('./constants')
+const { kState, kHeaders } = require('./symbols')
+const { webidl } = require('./webidl')
+const { FormData } = require('./formdata')
+const { URLSerializer } = require('./data-url')
+const { kConstruct } = require('../../core/symbols')
+const assert = require('node:assert')
+const { types } = require('node:util')
+
+const textEncoder = new TextEncoder('utf-8')
+
+// https://fetch.spec.whatwg.org/#response-class
+class Response {
+  // Creates network error Response.
+  static error () {
+    // The static error() method steps are to return the result of creating a
+    // Response object, given a new network error, "immutable", and this’s
+    // relevant Realm.
+    const responseObject = fromInnerResponse(makeNetworkError(), 'immutable')
+
+    return responseObject
+  }
+
+  // https://fetch.spec.whatwg.org/#dom-response-json
+  static json (data, init = {}) {
+    webidl.argumentLengthCheck(arguments, 1, 'Response.json')
+
+    if (init !== null) {
+      init = webidl.converters.ResponseInit(init)
+    }
+
+    // 1. Let bytes the result of running serialize a JavaScript value to JSON bytes on data.
+    const bytes = textEncoder.encode(
+      serializeJavascriptValueToJSONString(data)
+    )
+
+    // 2. Let body be the result of extracting bytes.
+    const body = extractBody(bytes)
+
+    // 3. Let responseObject be the result of creating a Response object, given a new response,
+    //    "response", and this’s relevant Realm.
+    const responseObject = fromInnerResponse(makeResponse({}), 'response')
+
+    // 4. Perform initialize a response given responseObject, init, and (body, "application/json").
+    initializeResponse(responseObject, init, { body: body[0], type: 'application/json' })
+
+    // 5. Return responseObject.
+    return responseObject
+  }
+
+  // Creates a redirect Response that redirects to url with status status.
+  static redirect (url, status = 302) {
+    webidl.argumentLengthCheck(arguments, 1, 'Response.redirect')
+
+    url = webidl.converters.USVString(url)
+    status = webidl.converters['unsigned short'](status)
+
+    // 1. Let parsedURL be the result of parsing url with current settings
+    // object’s API base URL.
+    // 2. If parsedURL is failure, then throw a TypeError.
+    // TODO: base-URL?
+    let parsedURL
+    try {
+      parsedURL = new URL(url, relevantRealm.settingsObject.baseUrl)
+    } catch (err) {
+      throw new TypeError(`Failed to parse URL from ${url}`, { cause: err })
+    }
+
+    // 3. If status is not a redirect status, then throw a RangeError.
+    if (!redirectStatusSet.has(status)) {
+      throw new RangeError(`Invalid status code ${status}`)
+    }
+
+    // 4. Let responseObject be the result of creating a Response object,
+    // given a new response, "immutable", and this’s relevant Realm.
+    const responseObject = fromInnerResponse(makeResponse({}), 'immutable')
+
+    // 5. Set responseObject’s response’s status to status.
+    responseObject[kState].status = status
+
+    // 6. Let value be parsedURL, serialized and isomorphic encoded.
+    const value = isomorphicEncode(URLSerializer(parsedURL))
+
+    // 7. Append `Location`/value to responseObject’s response’s header list.
+    responseObject[kState].headersList.append('location', value, true)
+
+    // 8. Return responseObject.
+    return responseObject
+  }
+
+  // https://fetch.spec.whatwg.org/#dom-response
+  constructor (body = null, init = {}) {
+    webidl.util.markAsUncloneable(this)
+    if (body === kConstruct) {
+      return
+    }
+
+    if (body !== null) {
+      body = webidl.converters.BodyInit(body)
+    }
+
+    init = webidl.converters.ResponseInit(init)
+
+    // 1. Set this’s response to a new response.
+    this[kState] = makeResponse({})
+
+    // 2. Set this’s headers to a new Headers object with this’s relevant
+    // Realm, whose header list is this’s response’s header list and guard
+    // is "response".
+    this[kHeaders] = new Headers(kConstruct)
+    setHeadersGuard(this[kHeaders], 'response')
+    setHeadersList(this[kHeaders], this[kState].headersList)
+
+    // 3. Let bodyWithType be null.
+    let bodyWithType = null
+
+    // 4. If body is non-null, then set bodyWithType to the result of extracting body.
+    if (body != null) {
+      const [extractedBody, type] = extractBody(body)
+      bodyWithType = { body: extractedBody, type }
+    }
+
+    // 5. Perform initialize a response given this, init, and bodyWithType.
+    initializeResponse(this, init, bodyWithType)
+  }
+
+  // Returns response’s type, e.g., "cors".
+  get type () {
+    webidl.brandCheck(this, Response)
+
+    // The type getter steps are to return this’s response’s type.
+    return this[kState].type
+  }
+
+  // Returns response’s URL, if it has one; otherwise the empty string.
+  get url () {
+    webidl.brandCheck(this, Response)
+
+    const urlList = this[kState].urlList
+
+    // The url getter steps are to return the empty string if this’s
+    // response’s URL is null; otherwise this’s response’s URL,
+    // serialized with exclude fragment set to true.
+    const url = urlList[urlList.length - 1] ?? null
+
+    if (url === null) {
+      return ''
+    }
+
+    return URLSerializer(url, true)
+  }
+
+  // Returns whether response was obtained through a redirect.
+  get redirected () {
+    webidl.brandCheck(this, Response)
+
+    // The redirected getter steps are to return true if this’s response’s URL
+    // list has more than one item; otherwise false.
+    return this[kState].urlList.length > 1
+  }
+
+  // Returns response’s status.
+  get status () {
+    webidl.brandCheck(this, Response)
+
+    // The status getter steps are to return this’s response’s status.
+    return this[kState].status
+  }
+
+  // Returns whether response’s status is an ok status.
+  get ok () {
+    webidl.brandCheck(this, Response)
+
+    // The ok getter steps are to return true if this’s response’s status is an
+    // ok status; otherwise false.
+    return this[kState].status >= 200 && this[kState].status <= 299
+  }
+
+  // Returns response’s status message.
+  get statusText () {
+    webidl.brandCheck(this, Response)
+
+    // The statusText getter steps are to return this’s response’s status
+    // message.
+    return this[kState].statusText
+  }
+
+  // Returns response’s headers as Headers.
+  get headers () {
+    webidl.brandCheck(this, Response)
+
+    // The headers getter steps are to return this’s headers.
+    return this[kHeaders]
+  }
+
+  get body () {
+    webidl.brandCheck(this, Response)
+
+    return this[kState].body ? this[kState].body.stream : null
+  }
+
+  get bodyUsed () {
+    webidl.brandCheck(this, Response)
+
+    return !!this[kState].body && util.isDisturbed(this[kState].body.stream)
+  }
+
+  // Returns a clone of response.
+  clone () {
+    webidl.brandCheck(this, Response)
+
+    // 1. If this is unusable, then throw a TypeError.
+    if (bodyUnusable(this)) {
+      throw webidl.errors.exception({
+        header: 'Response.clone',
+        message: 'Body has already been consumed.'
+      })
+    }
+
+    // 2. Let clonedResponse be the result of cloning this’s response.
+    const clonedResponse = cloneResponse(this[kState])
+
+    // Note: To re-register because of a new stream.
+    if (hasFinalizationRegistry && this[kState].body?.stream) {
+      streamRegistry.register(this, new WeakRef(this[kState].body.stream))
+    }
+
+    // 3. Return the result of creating a Response object, given
+    // clonedResponse, this’s headers’s guard, and this’s relevant Realm.
+    return fromInnerResponse(clonedResponse, getHeadersGuard(this[kHeaders]))
+  }
+
+  [nodeUtil.inspect.custom] (depth, options) {
+    if (options.depth === null) {
+      options.depth = 2
+    }
+
+    options.colors ??= true
+
+    const properties = {
+      status: this.status,
+      statusText: this.statusText,
+      headers: this.headers,
+      body: this.body,
+      bodyUsed: this.bodyUsed,
+      ok: this.ok,
+      redirected: this.redirected,
+      type: this.type,
+      url: this.url
+    }
+
+    return `Response ${nodeUtil.formatWithOptions(options, properties)}`
+  }
+}
+
+mixinBody(Response)
+
+Object.defineProperties(Response.prototype, {
+  type: kEnumerableProperty,
+  url: kEnumerableProperty,
+  status: kEnumerableProperty,
+  ok: kEnumerableProperty,
+  redirected: kEnumerableProperty,
+  statusText: kEnumerableProperty,
+  headers: kEnumerableProperty,
+  clone: kEnumerableProperty,
+  body: kEnumerableProperty,
+  bodyUsed: kEnumerableProperty,
+  [Symbol.toStringTag]: {
+    value: 'Response',
+    configurable: true
+  }
+})
+
+Object.defineProperties(Response, {
+  json: kEnumerableProperty,
+  redirect: kEnumerableProperty,
+  error: kEnumerableProperty
+})
+
+// https://fetch.spec.whatwg.org/#concept-response-clone
+function cloneResponse (response) {
+  // To clone a response response, run these steps:
+
+  // 1. If response is a filtered response, then return a new identical
+  // filtered response whose internal response is a clone of response’s
+  // internal response.
+  if (response.internalResponse) {
+    return filterResponse(
+      cloneResponse(response.internalResponse),
+      response.type
+    )
+  }
+
+  // 2. Let newResponse be a copy of response, except for its body.
+  const newResponse = makeResponse({ ...response, body: null })
+
+  // 3. If response’s body is non-null, then set newResponse’s body to the
+  // result of cloning response’s body.
+  if (response.body != null) {
+    newResponse.body = cloneBody(newResponse, response.body)
+  }
+
+  // 4. Return newResponse.
+  return newResponse
+}
+
+function makeResponse (init) {
+  return {
+    aborted: false,
+    rangeRequested: false,
+    timingAllowPassed: false,
+    requestIncludesCredentials: false,
+    type: 'default',
+    status: 200,
+    timingInfo: null,
+    cacheState: '',
+    statusText: '',
+    ...init,
+    headersList: init?.headersList
+      ? new HeadersList(init?.headersList)
+      : new HeadersList(),
+    urlList: init?.urlList ? [...init.urlList] : []
+  }
+}
+
+function makeNetworkError (reason) {
+  const isError = isErrorLike(reason)
+  return makeResponse({
+    type: 'error',
+    status: 0,
+    error: isError
+      ? reason
+      : new Error(reason ? String(reason) : reason),
+    aborted: reason && reason.name === 'AbortError'
+  })
+}
+
+// @see https://fetch.spec.whatwg.org/#concept-network-error
+function isNetworkError (response) {
+  return (
+    // A network error is a response whose type is "error",
+    response.type === 'error' &&
+    // status is 0
+    response.status === 0
+  )
+}
+
+function makeFilteredResponse (response, state) {
+  state = {
+    internalResponse: response,
+    ...state
+  }
+
+  return new Proxy(response, {
+    get (target, p) {
+      return p in state ? state[p] : target[p]
+    },
+    set (target, p, value) {
+      assert(!(p in state))
+      target[p] = value
+      return true
+    }
+  })
+}
+
+// https://fetch.spec.whatwg.org/#concept-filtered-response
+function filterResponse (response, type) {
+  // Set response to the following filtered response with response as its
+  // internal response, depending on request’s response tainting:
+  if (type === 'basic') {
+    // A basic filtered response is a filtered response whose type is "basic"
+    // and header list excludes any headers in internal response’s header list
+    // whose name is a forbidden response-header name.
+
+    // Note: undici does not implement forbidden response-header names
+    return makeFilteredResponse(response, {
+      type: 'basic',
+      headersList: response.headersList
+    })
+  } else if (type === 'cors') {
+    // A CORS filtered response is a filtered response whose type is "cors"
+    // and header list excludes any headers in internal response’s header
+    // list whose name is not a CORS-safelisted response-header name, given
+    // internal response’s CORS-exposed header-name list.
+
+    // Note: undici does not implement CORS-safelisted response-header names
+    return makeFilteredResponse(response, {
+      type: 'cors',
+      headersList: response.headersList
+    })
+  } else if (type === 'opaque') {
+    // An opaque filtered response is a filtered response whose type is
+    // "opaque", URL list is the empty list, status is 0, status message
+    // is the empty byte sequence, header list is empty, and body is null.
+
+    return makeFilteredResponse(response, {
+      type: 'opaque',
+      urlList: Object.freeze([]),
+      status: 0,
+      statusText: '',
+      body: null
+    })
+  } else if (type === 'opaqueredirect') {
+    // An opaque-redirect filtered response is a filtered response whose type
+    // is "opaqueredirect", status is 0, status message is the empty byte
+    // sequence, header list is empty, and body is null.
+
+    return makeFilteredResponse(response, {
+      type: 'opaqueredirect',
+      status: 0,
+      statusText: '',
+      headersList: [],
+      body: null
+    })
+  } else {
+    assert(false)
+  }
+}
+
+// https://fetch.spec.whatwg.org/#appropriate-network-error
+function makeAppropriateNetworkError (fetchParams, err = null) {
+  // 1. Assert: fetchParams is canceled.
+  assert(isCancelled(fetchParams))
+
+  // 2. Return an aborted network error if fetchParams is aborted;
+  // otherwise return a network error.
+  return isAborted(fetchParams)
+    ? makeNetworkError(Object.assign(new DOMException('The operation was aborted.', 'AbortError'), { cause: err }))
+    : makeNetworkError(Object.assign(new DOMException('Request was cancelled.'), { cause: err }))
+}
+
+// https://whatpr.org/fetch/1392.html#initialize-a-response
+function initializeResponse (response, init, body) {
+  // 1. If init["status"] is not in the range 200 to 599, inclusive, then
+  //    throw a RangeError.
+  if (init.status !== null && (init.status < 200 || init.status > 599)) {
+    throw new RangeError('init["status"] must be in the range of 200 to 599, inclusive.')
+  }
+
+  // 2. If init["statusText"] does not match the reason-phrase token production,
+  //    then throw a TypeError.
+  if ('statusText' in init && init.statusText != null) {
+    // See, https://datatracker.ietf.org/doc/html/rfc7230#section-3.1.2:
+    //   reason-phrase  = *( HTAB / SP / VCHAR / obs-text )
+    if (!isValidReasonPhrase(String(init.statusText))) {
+      throw new TypeError('Invalid statusText')
+    }
+  }
+
+  // 3. Set response’s response’s status to init["status"].
+  if ('status' in init && init.status != null) {
+    response[kState].status = init.status
+  }
+
+  // 4. Set response’s response’s status message to init["statusText"].
+  if ('statusText' in init && init.statusText != null) {
+    response[kState].statusText = init.statusText
+  }
+
+  // 5. If init["headers"] exists, then fill response’s headers with init["headers"].
+  if ('headers' in init && init.headers != null) {
+    fill(response[kHeaders], init.headers)
+  }
+
+  // 6. If body was given, then:
+  if (body) {
+    // 1. If response's status is a null body status, then throw a TypeError.
+    if (nullBodyStatus.includes(response.status)) {
+      throw webidl.errors.exception({
+        header: 'Response constructor',
+        message: `Invalid response status code ${response.status}`
+      })
+    }
+
+    // 2. Set response's body to body's body.
+    response[kState].body = body.body
+
+    // 3. If body's type is non-null and response's header list does not contain
+    //    `Content-Type`, then append (`Content-Type`, body's type) to response's header list.
+    if (body.type != null && !response[kState].headersList.contains('content-type', true)) {
+      response[kState].headersList.append('content-type', body.type, true)
+    }
+  }
+}
+
+/**
+ * @see https://fetch.spec.whatwg.org/#response-create
+ * @param {any} innerResponse
+ * @param {'request' | 'immutable' | 'request-no-cors' | 'response' | 'none'} guard
+ * @returns {Response}
+ */
+function fromInnerResponse (innerResponse, guard) {
+  const response = new Response(kConstruct)
+  response[kState] = innerResponse
+  response[kHeaders] = new Headers(kConstruct)
+  setHeadersList(response[kHeaders], innerResponse.headersList)
+  setHeadersGuard(response[kHeaders], guard)
+
+  if (hasFinalizationRegistry && innerResponse.body?.stream) {
+    // If the target (response) is reclaimed, the cleanup callback may be called at some point with
+    // the held value provided for it (innerResponse.body.stream). The held value can be any value:
+    // a primitive or an object, even undefined. If the held value is an object, the registry keeps
+    // a strong reference to it (so it can pass it to the cleanup callback later). Reworded from
+    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/FinalizationRegistry
+    streamRegistry.register(response, new WeakRef(innerResponse.body.stream))
+  }
+
+  return response
+}
+
+webidl.converters.ReadableStream = webidl.interfaceConverter(
+  ReadableStream
+)
+
+webidl.converters.FormData = webidl.interfaceConverter(
+  FormData
+)
+
+webidl.converters.URLSearchParams = webidl.interfaceConverter(
+  URLSearchParams
+)
+
+// https://fetch.spec.whatwg.org/#typedefdef-xmlhttprequestbodyinit
+webidl.converters.XMLHttpRequestBodyInit = function (V, prefix, name) {
+  if (typeof V === 'string') {
+    return webidl.converters.USVString(V, prefix, name)
+  }
+
+  if (isBlobLike(V)) {
+    return webidl.converters.Blob(V, prefix, name, { strict: false })
+  }
+
+  if (ArrayBuffer.isView(V) || types.isArrayBuffer(V)) {
+    return webidl.converters.BufferSource(V, prefix, name)
+  }
+
+  if (util.isFormDataLike(V)) {
+    return webidl.converters.FormData(V, prefix, name, { strict: false })
+  }
+
+  if (V instanceof URLSearchParams) {
+    return webidl.converters.URLSearchParams(V, prefix, name)
+  }
+
+  return webidl.converters.DOMString(V, prefix, name)
+}
+
+// https://fetch.spec.whatwg.org/#bodyinit
+webidl.converters.BodyInit = function (V, prefix, argument) {
+  if (V instanceof ReadableStream) {
+    return webidl.converters.ReadableStream(V, prefix, argument)
+  }
+
+  // Note: the spec doesn't include async iterables,
+  // this is an undici extension.
+  if (V?.[Symbol.asyncIterator]) {
+    return V
+  }
+
+  return webidl.converters.XMLHttpRequestBodyInit(V, prefix, argument)
+}
+
+webidl.converters.ResponseInit = webidl.dictionaryConverter([
+  {
+    key: 'status',
+    converter: webidl.converters['unsigned short'],
+    defaultValue: () => 200
+  },
+  {
+    key: 'statusText',
+    converter: webidl.converters.ByteString,
+    defaultValue: () => ''
+  },
+  {
+    key: 'headers',
+    converter: webidl.converters.HeadersInit
+  }
+])
+
+module.exports = {
+  isNetworkError,
+  makeNetworkError,
+  makeResponse,
+  makeAppropriateNetworkError,
+  filterResponse,
+  Response,
+  cloneResponse,
+  fromInnerResponse
+}

extracted-source/node_modules/undici/lib/web/fetch/symbols.js

@@ -0,0 +1,9 @@
+'use strict'
+
+module.exports = {
+  kUrl: Symbol('url'),
+  kHeaders: Symbol('headers'),
+  kSignal: Symbol('signal'),
+  kState: Symbol('state'),
+  kDispatcher: Symbol('dispatcher')
+}

extracted-source/node_modules/undici/lib/web/fetch/webidl.js

@@ -0,0 +1,695 @@
+'use strict'
+
+const { types, inspect } = require('node:util')
+const { markAsUncloneable } = require('node:worker_threads')
+const { toUSVString } = require('../../core/util')
+
+/** @type {import('../../../types/webidl').Webidl} */
+const webidl = {}
+webidl.converters = {}
+webidl.util = {}
+webidl.errors = {}
+
+webidl.errors.exception = function (message) {
+  return new TypeError(`${message.header}: ${message.message}`)
+}
+
+webidl.errors.conversionFailed = function (context) {
+  const plural = context.types.length === 1 ? '' : ' one of'
+  const message =
+    `${context.argument} could not be converted to` +
+    `${plural}: ${context.types.join(', ')}.`
+
+  return webidl.errors.exception({
+    header: context.prefix,
+    message
+  })
+}
+
+webidl.errors.invalidArgument = function (context) {
+  return webidl.errors.exception({
+    header: context.prefix,
+    message: `"${context.value}" is an invalid ${context.type}.`
+  })
+}
+
+// https://webidl.spec.whatwg.org/#implements
+webidl.brandCheck = function (V, I, opts) {
+  if (opts?.strict !== false) {
+    if (!(V instanceof I)) {
+      const err = new TypeError('Illegal invocation')
+      err.code = 'ERR_INVALID_THIS' // node compat.
+      throw err
+    }
+  } else {
+    if (V?.[Symbol.toStringTag] !== I.prototype[Symbol.toStringTag]) {
+      const err = new TypeError('Illegal invocation')
+      err.code = 'ERR_INVALID_THIS' // node compat.
+      throw err
+    }
+  }
+}
+
+webidl.argumentLengthCheck = function ({ length }, min, ctx) {
+  if (length < min) {
+    throw webidl.errors.exception({
+      message: `${min} argument${min !== 1 ? 's' : ''} required, ` +
+               `but${length ? ' only' : ''} ${length} found.`,
+      header: ctx
+    })
+  }
+}
+
+webidl.illegalConstructor = function () {
+  throw webidl.errors.exception({
+    header: 'TypeError',
+    message: 'Illegal constructor'
+  })
+}
+
+// https://tc39.es/ecma262/#sec-ecmascript-data-types-and-values
+webidl.util.Type = function (V) {
+  switch (typeof V) {
+    case 'undefined': return 'Undefined'
+    case 'boolean': return 'Boolean'
+    case 'string': return 'String'
+    case 'symbol': return 'Symbol'
+    case 'number': return 'Number'
+    case 'bigint': return 'BigInt'
+    case 'function':
+    case 'object': {
+      if (V === null) {
+        return 'Null'
+      }
+
+      return 'Object'
+    }
+  }
+}
+
+webidl.util.markAsUncloneable = markAsUncloneable || (() => {})
+// https://webidl.spec.whatwg.org/#abstract-opdef-converttoint
+webidl.util.ConvertToInt = function (V, bitLength, signedness, opts) {
+  let upperBound
+  let lowerBound
+
+  // 1. If bitLength is 64, then:
+  if (bitLength === 64) {
+    // 1. Let upperBound be 2^53 − 1.
+    upperBound = Math.pow(2, 53) - 1
+
+    // 2. If signedness is "unsigned", then let lowerBound be 0.
+    if (signedness === 'unsigned') {
+      lowerBound = 0
+    } else {
+      // 3. Otherwise let lowerBound be −2^53 + 1.
+      lowerBound = Math.pow(-2, 53) + 1
+    }
+  } else if (signedness === 'unsigned') {
+    // 2. Otherwise, if signedness is "unsigned", then:
+
+    // 1. Let lowerBound be 0.
+    lowerBound = 0
+
+    // 2. Let upperBound be 2^bitLength − 1.
+    upperBound = Math.pow(2, bitLength) - 1
+  } else {
+    // 3. Otherwise:
+
+    // 1. Let lowerBound be -2^bitLength − 1.
+    lowerBound = Math.pow(-2, bitLength) - 1
+
+    // 2. Let upperBound be 2^bitLength − 1 − 1.
+    upperBound = Math.pow(2, bitLength - 1) - 1
+  }
+
+  // 4. Let x be ? ToNumber(V).
+  let x = Number(V)
+
+  // 5. If x is −0, then set x to +0.
+  if (x === 0) {
+    x = 0
+  }
+
+  // 6. If the conversion is to an IDL type associated
+  //    with the [EnforceRange] extended attribute, then:
+  if (opts?.enforceRange === true) {
+    // 1. If x is NaN, +∞, or −∞, then throw a TypeError.
+    if (
+      Number.isNaN(x) ||
+      x === Number.POSITIVE_INFINITY ||
+      x === Number.NEGATIVE_INFINITY
+    ) {
+      throw webidl.errors.exception({
+        header: 'Integer conversion',
+        message: `Could not convert ${webidl.util.Stringify(V)} to an integer.`
+      })
+    }
+
+    // 2. Set x to IntegerPart(x).
+    x = webidl.util.IntegerPart(x)
+
+    // 3. If x < lowerBound or x > upperBound, then
+    //    throw a TypeError.
+    if (x < lowerBound || x > upperBound) {
+      throw webidl.errors.exception({
+        header: 'Integer conversion',
+        message: `Value must be between ${lowerBound}-${upperBound}, got ${x}.`
+      })
+    }
+
+    // 4. Return x.
+    return x
+  }
+
+  // 7. If x is not NaN and the conversion is to an IDL
+  //    type associated with the [Clamp] extended
+  //    attribute, then:
+  if (!Number.isNaN(x) && opts?.clamp === true) {
+    // 1. Set x to min(max(x, lowerBound), upperBound).
+    x = Math.min(Math.max(x, lowerBound), upperBound)
+
+    // 2. Round x to the nearest integer, choosing the
+    //    even integer if it lies halfway between two,
+    //    and choosing +0 rather than −0.
+    if (Math.floor(x) % 2 === 0) {
+      x = Math.floor(x)
+    } else {
+      x = Math.ceil(x)
+    }
+
+    // 3. Return x.
+    return x
+  }
+
+  // 8. If x is NaN, +0, +∞, or −∞, then return +0.
+  if (
+    Number.isNaN(x) ||
+    (x === 0 && Object.is(0, x)) ||
+    x === Number.POSITIVE_INFINITY ||
+    x === Number.NEGATIVE_INFINITY
+  ) {
+    return 0
+  }
+
+  // 9. Set x to IntegerPart(x).
+  x = webidl.util.IntegerPart(x)
+
+  // 10. Set x to x modulo 2^bitLength.
+  x = x % Math.pow(2, bitLength)
+
+  // 11. If signedness is "signed" and x ≥ 2^bitLength − 1,
+  //    then return x − 2^bitLength.
+  if (signedness === 'signed' && x >= Math.pow(2, bitLength) - 1) {
+    return x - Math.pow(2, bitLength)
+  }
+
+  // 12. Otherwise, return x.
+  return x
+}
+
+// https://webidl.spec.whatwg.org/#abstract-opdef-integerpart
+webidl.util.IntegerPart = function (n) {
+  // 1. Let r be floor(abs(n)).
+  const r = Math.floor(Math.abs(n))
+
+  // 2. If n < 0, then return -1 × r.
+  if (n < 0) {
+    return -1 * r
+  }
+
+  // 3. Otherwise, return r.
+  return r
+}
+
+webidl.util.Stringify = function (V) {
+  const type = webidl.util.Type(V)
+
+  switch (type) {
+    case 'Symbol':
+      return `Symbol(${V.description})`
+    case 'Object':
+      return inspect(V)
+    case 'String':
+      return `"${V}"`
+    default:
+      return `${V}`
+  }
+}
+
+// https://webidl.spec.whatwg.org/#es-sequence
+webidl.sequenceConverter = function (converter) {
+  return (V, prefix, argument, Iterable) => {
+    // 1. If Type(V) is not Object, throw a TypeError.
+    if (webidl.util.Type(V) !== 'Object') {
+      throw webidl.errors.exception({
+        header: prefix,
+        message: `${argument} (${webidl.util.Stringify(V)}) is not iterable.`
+      })
+    }
+
+    // 2. Let method be ? GetMethod(V, @@iterator).
+    /** @type {Generator} */
+    const method = typeof Iterable === 'function' ? Iterable() : V?.[Symbol.iterator]?.()
+    const seq = []
+    let index = 0
+
+    // 3. If method is undefined, throw a TypeError.
+    if (
+      method === undefined ||
+      typeof method.next !== 'function'
+    ) {
+      throw webidl.errors.exception({
+        header: prefix,
+        message: `${argument} is not iterable.`
+      })
+    }
+
+    // https://webidl.spec.whatwg.org/#create-sequence-from-iterable
+    while (true) {
+      const { done, value } = method.next()
+
+      if (done) {
+        break
+      }
+
+      seq.push(converter(value, prefix, `${argument}[${index++}]`))
+    }
+
+    return seq
+  }
+}
+
+// https://webidl.spec.whatwg.org/#es-to-record
+webidl.recordConverter = function (keyConverter, valueConverter) {
+  return (O, prefix, argument) => {
+    // 1. If Type(O) is not Object, throw a TypeError.
+    if (webidl.util.Type(O) !== 'Object') {
+      throw webidl.errors.exception({
+        header: prefix,
+        message: `${argument} ("${webidl.util.Type(O)}") is not an Object.`
+      })
+    }
+
+    // 2. Let result be a new empty instance of record<K, V>.
+    const result = {}
+
+    if (!types.isProxy(O)) {
+      // 1. Let desc be ? O.[[GetOwnProperty]](key).
+      const keys = [...Object.getOwnPropertyNames(O), ...Object.getOwnPropertySymbols(O)]
+
+      for (const key of keys) {
+        // 1. Let typedKey be key converted to an IDL value of type K.
+        const typedKey = keyConverter(key, prefix, argument)
+
+        // 2. Let value be ? Get(O, key).
+        // 3. Let typedValue be value converted to an IDL value of type V.
+        const typedValue = valueConverter(O[key], prefix, argument)
+
+        // 4. Set result[typedKey] to typedValue.
+        result[typedKey] = typedValue
+      }
+
+      // 5. Return result.
+      return result
+    }
+
+    // 3. Let keys be ? O.[[OwnPropertyKeys]]().
+    const keys = Reflect.ownKeys(O)
+
+    // 4. For each key of keys.
+    for (const key of keys) {
+      // 1. Let desc be ? O.[[GetOwnProperty]](key).
+      const desc = Reflect.getOwnPropertyDescriptor(O, key)
+
+      // 2. If desc is not undefined and desc.[[Enumerable]] is true:
+      if (desc?.enumerable) {
+        // 1. Let typedKey be key converted to an IDL value of type K.
+        const typedKey = keyConverter(key, prefix, argument)
+
+        // 2. Let value be ? Get(O, key).
+        // 3. Let typedValue be value converted to an IDL value of type V.
+        const typedValue = valueConverter(O[key], prefix, argument)
+
+        // 4. Set result[typedKey] to typedValue.
+        result[typedKey] = typedValue
+      }
+    }
+
+    // 5. Return result.
+    return result
+  }
+}
+
+webidl.interfaceConverter = function (i) {
+  return (V, prefix, argument, opts) => {
+    if (opts?.strict !== false && !(V instanceof i)) {
+      throw webidl.errors.exception({
+        header: prefix,
+        message: `Expected ${argument} ("${webidl.util.Stringify(V)}") to be an instance of ${i.name}.`
+      })
+    }
+
+    return V
+  }
+}
+
+webidl.dictionaryConverter = function (converters) {
+  return (dictionary, prefix, argument) => {
+    const type = webidl.util.Type(dictionary)
+    const dict = {}
+
+    if (type === 'Null' || type === 'Undefined') {
+      return dict
+    } else if (type !== 'Object') {
+      throw webidl.errors.exception({
+        header: prefix,
+        message: `Expected ${dictionary} to be one of: Null, Undefined, Object.`
+      })
+    }
+
+    for (const options of converters) {
+      const { key, defaultValue, required, converter } = options
+
+      if (required === true) {
+        if (!Object.hasOwn(dictionary, key)) {
+          throw webidl.errors.exception({
+            header: prefix,
+            message: `Missing required key "${key}".`
+          })
+        }
+      }
+
+      let value = dictionary[key]
+      const hasDefault = Object.hasOwn(options, 'defaultValue')
+
+      // Only use defaultValue if value is undefined and
+      // a defaultValue options was provided.
+      if (hasDefault && value !== null) {
+        value ??= defaultValue()
+      }
+
+      // A key can be optional and have no default value.
+      // When this happens, do not perform a conversion,
+      // and do not assign the key a value.
+      if (required || hasDefault || value !== undefined) {
+        value = converter(value, prefix, `${argument}.${key}`)
+
+        if (
+          options.allowedValues &&
+          !options.allowedValues.includes(value)
+        ) {
+          throw webidl.errors.exception({
+            header: prefix,
+            message: `${value} is not an accepted type. Expected one of ${options.allowedValues.join(', ')}.`
+          })
+        }
+
+        dict[key] = value
+      }
+    }
+
+    return dict
+  }
+}
+
+webidl.nullableConverter = function (converter) {
+  return (V, prefix, argument) => {
+    if (V === null) {
+      return V
+    }
+
+    return converter(V, prefix, argument)
+  }
+}
+
+// https://webidl.spec.whatwg.org/#es-DOMString
+webidl.converters.DOMString = function (V, prefix, argument, opts) {
+  // 1. If V is null and the conversion is to an IDL type
+  //    associated with the [LegacyNullToEmptyString]
+  //    extended attribute, then return the DOMString value
+  //    that represents the empty string.
+  if (V === null && opts?.legacyNullToEmptyString) {
+    return ''
+  }
+
+  // 2. Let x be ? ToString(V).
+  if (typeof V === 'symbol') {
+    throw webidl.errors.exception({
+      header: prefix,
+      message: `${argument} is a symbol, which cannot be converted to a DOMString.`
+    })
+  }
+
+  // 3. Return the IDL DOMString value that represents the
+  //    same sequence of code units as the one the
+  //    ECMAScript String value x represents.
+  return String(V)
+}
+
+// https://webidl.spec.whatwg.org/#es-ByteString
+webidl.converters.ByteString = function (V, prefix, argument) {
+  // 1. Let x be ? ToString(V).
+  // Note: DOMString converter perform ? ToString(V)
+  const x = webidl.converters.DOMString(V, prefix, argument)
+
+  // 2. If the value of any element of x is greater than
+  //    255, then throw a TypeError.
+  for (let index = 0; index < x.length; index++) {
+    if (x.charCodeAt(index) > 255) {
+      throw new TypeError(
+        'Cannot convert argument to a ByteString because the character at ' +
+        `index ${index} has a value of ${x.charCodeAt(index)} which is greater than 255.`
+      )
+    }
+  }
+
+  // 3. Return an IDL ByteString value whose length is the
+  //    length of x, and where the value of each element is
+  //    the value of the corresponding element of x.
+  return x
+}
+
+// https://webidl.spec.whatwg.org/#es-USVString
+// TODO: rewrite this so we can control the errors thrown
+webidl.converters.USVString = toUSVString
+
+// https://webidl.spec.whatwg.org/#es-boolean
+webidl.converters.boolean = function (V) {
+  // 1. Let x be the result of computing ToBoolean(V).
+  const x = Boolean(V)
+
+  // 2. Return the IDL boolean value that is the one that represents
+  //    the same truth value as the ECMAScript Boolean value x.
+  return x
+}
+
+// https://webidl.spec.whatwg.org/#es-any
+webidl.converters.any = function (V) {
+  return V
+}
+
+// https://webidl.spec.whatwg.org/#es-long-long
+webidl.converters['long long'] = function (V, prefix, argument) {
+  // 1. Let x be ? ConvertToInt(V, 64, "signed").
+  const x = webidl.util.ConvertToInt(V, 64, 'signed', undefined, prefix, argument)
+
+  // 2. Return the IDL long long value that represents
+  //    the same numeric value as x.
+  return x
+}
+
+// https://webidl.spec.whatwg.org/#es-unsigned-long-long
+webidl.converters['unsigned long long'] = function (V, prefix, argument) {
+  // 1. Let x be ? ConvertToInt(V, 64, "unsigned").
+  const x = webidl.util.ConvertToInt(V, 64, 'unsigned', undefined, prefix, argument)
+
+  // 2. Return the IDL unsigned long long value that
+  //    represents the same numeric value as x.
+  return x
+}
+
+// https://webidl.spec.whatwg.org/#es-unsigned-long
+webidl.converters['unsigned long'] = function (V, prefix, argument) {
+  // 1. Let x be ? ConvertToInt(V, 32, "unsigned").
+  const x = webidl.util.ConvertToInt(V, 32, 'unsigned', undefined, prefix, argument)
+
+  // 2. Return the IDL unsigned long value that
+  //    represents the same numeric value as x.
+  return x
+}
+
+// https://webidl.spec.whatwg.org/#es-unsigned-short
+webidl.converters['unsigned short'] = function (V, prefix, argument, opts) {
+  // 1. Let x be ? ConvertToInt(V, 16, "unsigned").
+  const x = webidl.util.ConvertToInt(V, 16, 'unsigned', opts, prefix, argument)
+
+  // 2. Return the IDL unsigned short value that represents
+  //    the same numeric value as x.
+  return x
+}
+
+// https://webidl.spec.whatwg.org/#idl-ArrayBuffer
+webidl.converters.ArrayBuffer = function (V, prefix, argument, opts) {
+  // 1. If Type(V) is not Object, or V does not have an
+  //    [[ArrayBufferData]] internal slot, then throw a
+  //    TypeError.
+  // see: https://tc39.es/ecma262/#sec-properties-of-the-arraybuffer-instances
+  // see: https://tc39.es/ecma262/#sec-properties-of-the-sharedarraybuffer-instances
+  if (
+    webidl.util.Type(V) !== 'Object' ||
+    !types.isAnyArrayBuffer(V)
+  ) {
+    throw webidl.errors.conversionFailed({
+      prefix,
+      argument: `${argument} ("${webidl.util.Stringify(V)}")`,
+      types: ['ArrayBuffer']
+    })
+  }
+
+  // 2. If the conversion is not to an IDL type associated
+  //    with the [AllowShared] extended attribute, and
+  //    IsSharedArrayBuffer(V) is true, then throw a
+  //    TypeError.
+  if (opts?.allowShared === false && types.isSharedArrayBuffer(V)) {
+    throw webidl.errors.exception({
+      header: 'ArrayBuffer',
+      message: 'SharedArrayBuffer is not allowed.'
+    })
+  }
+
+  // 3. If the conversion is not to an IDL type associated
+  //    with the [AllowResizable] extended attribute, and
+  //    IsResizableArrayBuffer(V) is true, then throw a
+  //    TypeError.
+  if (V.resizable || V.growable) {
+    throw webidl.errors.exception({
+      header: 'ArrayBuffer',
+      message: 'Received a resizable ArrayBuffer.'
+    })
+  }
+
+  // 4. Return the IDL ArrayBuffer value that is a
+  //    reference to the same object as V.
+  return V
+}
+
+webidl.converters.TypedArray = function (V, T, prefix, name, opts) {
+  // 1. Let T be the IDL type V is being converted to.
+
+  // 2. If Type(V) is not Object, or V does not have a
+  //    [[TypedArrayName]] internal slot with a value
+  //    equal to T’s name, then throw a TypeError.
+  if (
+    webidl.util.Type(V) !== 'Object' ||
+    !types.isTypedArray(V) ||
+    V.constructor.name !== T.name
+  ) {
+    throw webidl.errors.conversionFailed({
+      prefix,
+      argument: `${name} ("${webidl.util.Stringify(V)}")`,
+      types: [T.name]
+    })
+  }
+
+  // 3. If the conversion is not to an IDL type associated
+  //    with the [AllowShared] extended attribute, and
+  //    IsSharedArrayBuffer(V.[[ViewedArrayBuffer]]) is
+  //    true, then throw a TypeError.
+  if (opts?.allowShared === false && types.isSharedArrayBuffer(V.buffer)) {
+    throw webidl.errors.exception({
+      header: 'ArrayBuffer',
+      message: 'SharedArrayBuffer is not allowed.'
+    })
+  }
+
+  // 4. If the conversion is not to an IDL type associated
+  //    with the [AllowResizable] extended attribute, and
+  //    IsResizableArrayBuffer(V.[[ViewedArrayBuffer]]) is
+  //    true, then throw a TypeError.
+  if (V.buffer.resizable || V.buffer.growable) {
+    throw webidl.errors.exception({
+      header: 'ArrayBuffer',
+      message: 'Received a resizable ArrayBuffer.'
+    })
+  }
+
+  // 5. Return the IDL value of type T that is a reference
+  //    to the same object as V.
+  return V
+}
+
+webidl.converters.DataView = function (V, prefix, name, opts) {
+  // 1. If Type(V) is not Object, or V does not have a
+  //    [[DataView]] internal slot, then throw a TypeError.
+  if (webidl.util.Type(V) !== 'Object' || !types.isDataView(V)) {
+    throw webidl.errors.exception({
+      header: prefix,
+      message: `${name} is not a DataView.`
+    })
+  }
+
+  // 2. If the conversion is not to an IDL type associated
+  //    with the [AllowShared] extended attribute, and
+  //    IsSharedArrayBuffer(V.[[ViewedArrayBuffer]]) is true,
+  //    then throw a TypeError.
+  if (opts?.allowShared === false && types.isSharedArrayBuffer(V.buffer)) {
+    throw webidl.errors.exception({
+      header: 'ArrayBuffer',
+      message: 'SharedArrayBuffer is not allowed.'
+    })
+  }
+
+  // 3. If the conversion is not to an IDL type associated
+  //    with the [AllowResizable] extended attribute, and
+  //    IsResizableArrayBuffer(V.[[ViewedArrayBuffer]]) is
+  //    true, then throw a TypeError.
+  if (V.buffer.resizable || V.buffer.growable) {
+    throw webidl.errors.exception({
+      header: 'ArrayBuffer',
+      message: 'Received a resizable ArrayBuffer.'
+    })
+  }
+
+  // 4. Return the IDL DataView value that is a reference
+  //    to the same object as V.
+  return V
+}
+
+// https://webidl.spec.whatwg.org/#BufferSource
+webidl.converters.BufferSource = function (V, prefix, name, opts) {
+  if (types.isAnyArrayBuffer(V)) {
+    return webidl.converters.ArrayBuffer(V, prefix, name, { ...opts, allowShared: false })
+  }
+
+  if (types.isTypedArray(V)) {
+    return webidl.converters.TypedArray(V, V.constructor, prefix, name, { ...opts, allowShared: false })
+  }
+
+  if (types.isDataView(V)) {
+    return webidl.converters.DataView(V, prefix, name, { ...opts, allowShared: false })
+  }
+
+  throw webidl.errors.conversionFailed({
+    prefix,
+    argument: `${name} ("${webidl.util.Stringify(V)}")`,
+    types: ['BufferSource']
+  })
+}
+
+webidl.converters['sequence<ByteString>'] = webidl.sequenceConverter(
+  webidl.converters.ByteString
+)
+
+webidl.converters['sequence<sequence<ByteString>>'] = webidl.sequenceConverter(
+  webidl.converters['sequence<ByteString>']
+)
+
+webidl.converters['record<ByteString, ByteString>'] = webidl.recordConverter(
+  webidl.converters.ByteString,
+  webidl.converters.ByteString
+)
+
+module.exports = {
+  webidl
+}