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https://github.com/tvytlx/ai-agent-deep-dive.git
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Add extracted source directory and README navigation
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222
extracted-source/node_modules/wrap-ansi/index.js
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222
extracted-source/node_modules/wrap-ansi/index.js
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import stringWidth from 'string-width';
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import stripAnsi from 'strip-ansi';
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import ansiStyles from 'ansi-styles';
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const ESCAPES = new Set([
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'\u001B',
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'\u009B',
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]);
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const END_CODE = 39;
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const ANSI_ESCAPE_BELL = '\u0007';
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const ANSI_CSI = '[';
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const ANSI_OSC = ']';
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const ANSI_SGR_TERMINATOR = 'm';
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const ANSI_ESCAPE_LINK = `${ANSI_OSC}8;;`;
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const wrapAnsiCode = code => `${ESCAPES.values().next().value}${ANSI_CSI}${code}${ANSI_SGR_TERMINATOR}`;
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const wrapAnsiHyperlink = url => `${ESCAPES.values().next().value}${ANSI_ESCAPE_LINK}${url}${ANSI_ESCAPE_BELL}`;
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// Calculate the length of words split on ' ', ignoring
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// the extra characters added by ansi escape codes
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const wordLengths = string => string.split(' ').map(character => stringWidth(character));
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// Wrap a long word across multiple rows
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// Ansi escape codes do not count towards length
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const wrapWord = (rows, word, columns) => {
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const characters = [...word];
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let isInsideEscape = false;
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let isInsideLinkEscape = false;
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let visible = stringWidth(stripAnsi(rows.at(-1)));
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for (const [index, character] of characters.entries()) {
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const characterLength = stringWidth(character);
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if (visible + characterLength <= columns) {
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rows[rows.length - 1] += character;
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} else {
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rows.push(character);
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visible = 0;
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}
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if (ESCAPES.has(character)) {
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isInsideEscape = true;
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const ansiEscapeLinkCandidate = characters.slice(index + 1, index + 1 + ANSI_ESCAPE_LINK.length).join('');
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isInsideLinkEscape = ansiEscapeLinkCandidate === ANSI_ESCAPE_LINK;
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}
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if (isInsideEscape) {
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if (isInsideLinkEscape) {
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if (character === ANSI_ESCAPE_BELL) {
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isInsideEscape = false;
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isInsideLinkEscape = false;
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}
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} else if (character === ANSI_SGR_TERMINATOR) {
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isInsideEscape = false;
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}
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continue;
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}
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visible += characterLength;
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if (visible === columns && index < characters.length - 1) {
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rows.push('');
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visible = 0;
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}
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}
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// It's possible that the last row we copy over is only
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// ansi escape characters, handle this edge-case
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if (!visible && rows.at(-1).length > 0 && rows.length > 1) {
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rows[rows.length - 2] += rows.pop();
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}
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};
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// Trims spaces from a string ignoring invisible sequences
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const stringVisibleTrimSpacesRight = string => {
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const words = string.split(' ');
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let last = words.length;
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while (last > 0) {
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if (stringWidth(words[last - 1]) > 0) {
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break;
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}
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last--;
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}
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if (last === words.length) {
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return string;
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}
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return words.slice(0, last).join(' ') + words.slice(last).join('');
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};
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// The wrap-ansi module can be invoked in either 'hard' or 'soft' wrap mode.
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//
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// 'hard' will never allow a string to take up more than columns characters.
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//
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// 'soft' allows long words to expand past the column length.
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const exec = (string, columns, options = {}) => {
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if (options.trim !== false && string.trim() === '') {
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return '';
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}
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let returnValue = '';
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let escapeCode;
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let escapeUrl;
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const lengths = wordLengths(string);
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let rows = [''];
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for (const [index, word] of string.split(' ').entries()) {
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if (options.trim !== false) {
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rows[rows.length - 1] = rows.at(-1).trimStart();
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}
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let rowLength = stringWidth(rows.at(-1));
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if (index !== 0) {
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if (rowLength >= columns && (options.wordWrap === false || options.trim === false)) {
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// If we start with a new word but the current row length equals the length of the columns, add a new row
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rows.push('');
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rowLength = 0;
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}
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if (rowLength > 0 || options.trim === false) {
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rows[rows.length - 1] += ' ';
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rowLength++;
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}
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}
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// In 'hard' wrap mode, the length of a line is never allowed to extend past 'columns'
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if (options.hard && lengths[index] > columns) {
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const remainingColumns = (columns - rowLength);
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const breaksStartingThisLine = 1 + Math.floor((lengths[index] - remainingColumns - 1) / columns);
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const breaksStartingNextLine = Math.floor((lengths[index] - 1) / columns);
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if (breaksStartingNextLine < breaksStartingThisLine) {
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rows.push('');
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}
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wrapWord(rows, word, columns);
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continue;
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}
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if (rowLength + lengths[index] > columns && rowLength > 0 && lengths[index] > 0) {
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if (options.wordWrap === false && rowLength < columns) {
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wrapWord(rows, word, columns);
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continue;
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}
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rows.push('');
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}
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if (rowLength + lengths[index] > columns && options.wordWrap === false) {
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wrapWord(rows, word, columns);
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continue;
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}
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rows[rows.length - 1] += word;
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}
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if (options.trim !== false) {
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rows = rows.map(row => stringVisibleTrimSpacesRight(row));
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}
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const preString = rows.join('\n');
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const pre = [...preString];
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// We need to keep a separate index as `String#slice()` works on Unicode code units, while `pre` is an array of codepoints.
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let preStringIndex = 0;
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for (const [index, character] of pre.entries()) {
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returnValue += character;
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if (ESCAPES.has(character)) {
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const {groups} = new RegExp(`(?:\\${ANSI_CSI}(?<code>\\d+)m|\\${ANSI_ESCAPE_LINK}(?<uri>.*)${ANSI_ESCAPE_BELL})`).exec(preString.slice(preStringIndex)) || {groups: {}};
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if (groups.code !== undefined) {
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const code = Number.parseFloat(groups.code);
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escapeCode = code === END_CODE ? undefined : code;
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} else if (groups.uri !== undefined) {
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escapeUrl = groups.uri.length === 0 ? undefined : groups.uri;
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}
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}
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const code = ansiStyles.codes.get(Number(escapeCode));
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if (pre[index + 1] === '\n') {
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if (escapeUrl) {
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returnValue += wrapAnsiHyperlink('');
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}
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if (escapeCode && code) {
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returnValue += wrapAnsiCode(code);
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}
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} else if (character === '\n') {
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if (escapeCode && code) {
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returnValue += wrapAnsiCode(escapeCode);
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}
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if (escapeUrl) {
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returnValue += wrapAnsiHyperlink(escapeUrl);
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}
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}
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preStringIndex += character.length;
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}
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return returnValue;
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};
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// For each newline, invoke the method separately
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export default function wrapAnsi(string, columns, options) {
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return String(string)
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.normalize()
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.replaceAll('\r\n', '\n')
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.split('\n')
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.map(line => exec(line, columns, options))
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.join('\n');
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}
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82
extracted-source/node_modules/wrap-ansi/node_modules/string-width/index.js
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82
extracted-source/node_modules/wrap-ansi/node_modules/string-width/index.js
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import stripAnsi from 'strip-ansi';
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import {eastAsianWidth} from 'get-east-asian-width';
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import emojiRegex from 'emoji-regex';
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const segmenter = new Intl.Segmenter();
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const defaultIgnorableCodePointRegex = /^\p{Default_Ignorable_Code_Point}$/u;
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export default function stringWidth(string, options = {}) {
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if (typeof string !== 'string' || string.length === 0) {
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return 0;
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}
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const {
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ambiguousIsNarrow = true,
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countAnsiEscapeCodes = false,
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} = options;
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if (!countAnsiEscapeCodes) {
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string = stripAnsi(string);
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}
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if (string.length === 0) {
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return 0;
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}
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let width = 0;
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const eastAsianWidthOptions = {ambiguousAsWide: !ambiguousIsNarrow};
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for (const {segment: character} of segmenter.segment(string)) {
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const codePoint = character.codePointAt(0);
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// Ignore control characters
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if (codePoint <= 0x1F || (codePoint >= 0x7F && codePoint <= 0x9F)) {
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continue;
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}
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// Ignore zero-width characters
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if (
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(codePoint >= 0x20_0B && codePoint <= 0x20_0F) // Zero-width space, non-joiner, joiner, left-to-right mark, right-to-left mark
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|| codePoint === 0xFE_FF // Zero-width no-break space
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) {
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continue;
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}
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// Ignore combining characters
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if (
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(codePoint >= 0x3_00 && codePoint <= 0x3_6F) // Combining diacritical marks
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|| (codePoint >= 0x1A_B0 && codePoint <= 0x1A_FF) // Combining diacritical marks extended
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|| (codePoint >= 0x1D_C0 && codePoint <= 0x1D_FF) // Combining diacritical marks supplement
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|| (codePoint >= 0x20_D0 && codePoint <= 0x20_FF) // Combining diacritical marks for symbols
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|| (codePoint >= 0xFE_20 && codePoint <= 0xFE_2F) // Combining half marks
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) {
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continue;
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}
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// Ignore surrogate pairs
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if (codePoint >= 0xD8_00 && codePoint <= 0xDF_FF) {
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continue;
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}
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// Ignore variation selectors
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if (codePoint >= 0xFE_00 && codePoint <= 0xFE_0F) {
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continue;
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}
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// This covers some of the above cases, but we still keep them for performance reasons.
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if (defaultIgnorableCodePointRegex.test(character)) {
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continue;
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}
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// TODO: Use `/\p{RGI_Emoji}/v` when targeting Node.js 20.
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if (emojiRegex().test(character)) {
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width += 2;
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continue;
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}
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width += eastAsianWidth(codePoint, eastAsianWidthOptions);
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}
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return width;
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}
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4
extracted-source/node_modules/wrap-ansi/node_modules/string-width/node_modules/emoji-regex/index.js
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4
extracted-source/node_modules/wrap-ansi/node_modules/string-width/node_modules/emoji-regex/index.js
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