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extracted-source/node_modules/@modelcontextprotocol/sdk/dist/esm/server/zod-compat.js

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+// zod-compat.ts
+// ----------------------------------------------------
+// Unified types + helpers to accept Zod v3 and v4 (Mini)
+// ----------------------------------------------------
+import * as z3rt from 'zod/v3';
+import * as z4mini from 'zod/v4-mini';
+// --- Runtime detection ---
+export function isZ4Schema(s) {
+    // Present on Zod 4 (Classic & Mini) schemas; absent on Zod 3
+    const schema = s;
+    return !!schema._zod;
+}
+// --- Schema construction ---
+export function objectFromShape(shape) {
+    const values = Object.values(shape);
+    if (values.length === 0)
+        return z4mini.object({}); // default to v4 Mini
+    const allV4 = values.every(isZ4Schema);
+    const allV3 = values.every(s => !isZ4Schema(s));
+    if (allV4)
+        return z4mini.object(shape);
+    if (allV3)
+        return z3rt.object(shape);
+    throw new Error('Mixed Zod versions detected in object shape.');
+}
+// --- Unified parsing ---
+export function safeParse(schema, data) {
+    if (isZ4Schema(schema)) {
+        // Mini exposes top-level safeParse
+        const result = z4mini.safeParse(schema, data);
+        return result;
+    }
+    const v3Schema = schema;
+    const result = v3Schema.safeParse(data);
+    return result;
+}
+export async function safeParseAsync(schema, data) {
+    if (isZ4Schema(schema)) {
+        // Mini exposes top-level safeParseAsync
+        const result = await z4mini.safeParseAsync(schema, data);
+        return result;
+    }
+    const v3Schema = schema;
+    const result = await v3Schema.safeParseAsync(data);
+    return result;
+}
+// --- Shape extraction ---
+export function getObjectShape(schema) {
+    if (!schema)
+        return undefined;
+    // Zod v3 exposes `.shape`; Zod v4 keeps the shape on `_zod.def.shape`
+    let rawShape;
+    if (isZ4Schema(schema)) {
+        const v4Schema = schema;
+        rawShape = v4Schema._zod?.def?.shape;
+    }
+    else {
+        const v3Schema = schema;
+        rawShape = v3Schema.shape;
+    }
+    if (!rawShape)
+        return undefined;
+    if (typeof rawShape === 'function') {
+        try {
+            return rawShape();
+        }
+        catch {
+            return undefined;
+        }
+    }
+    return rawShape;
+}
+// --- Schema normalization ---
+/**
+ * Normalizes a schema to an object schema. Handles both:
+ * - Already-constructed object schemas (v3 or v4)
+ * - Raw shapes that need to be wrapped into object schemas
+ */
+export function normalizeObjectSchema(schema) {
+    if (!schema)
+        return undefined;
+    // First check if it's a raw shape (Record<string, AnySchema>)
+    // Raw shapes don't have _def or _zod properties and aren't schemas themselves
+    if (typeof schema === 'object') {
+        // Check if it's actually a ZodRawShapeCompat (not a schema instance)
+        // by checking if it lacks schema-like internal properties
+        const asV3 = schema;
+        const asV4 = schema;
+        // If it's not a schema instance (no _def or _zod), it might be a raw shape
+        if (!asV3._def && !asV4._zod) {
+            // Check if all values are schemas (heuristic to confirm it's a raw shape)
+            const values = Object.values(schema);
+            if (values.length > 0 &&
+                values.every(v => typeof v === 'object' &&
+                    v !== null &&
+                    (v._def !== undefined ||
+                        v._zod !== undefined ||
+                        typeof v.parse === 'function'))) {
+                return objectFromShape(schema);
+            }
+        }
+    }
+    // If we get here, it should be an AnySchema (not a raw shape)
+    // Check if it's already an object schema
+    if (isZ4Schema(schema)) {
+        // Check if it's a v4 object
+        const v4Schema = schema;
+        const def = v4Schema._zod?.def;
+        if (def && (def.type === 'object' || def.shape !== undefined)) {
+            return schema;
+        }
+    }
+    else {
+        // Check if it's a v3 object
+        const v3Schema = schema;
+        if (v3Schema.shape !== undefined) {
+            return schema;
+        }
+    }
+    return undefined;
+}
+// --- Error message extraction ---
+/**
+ * Safely extracts an error message from a parse result error.
+ * Zod errors can have different structures, so we handle various cases.
+ */
+export function getParseErrorMessage(error) {
+    if (error && typeof error === 'object') {
+        // Try common error structures
+        if ('message' in error && typeof error.message === 'string') {
+            return error.message;
+        }
+        if ('issues' in error && Array.isArray(error.issues) && error.issues.length > 0) {
+            const firstIssue = error.issues[0];
+            if (firstIssue && typeof firstIssue === 'object' && 'message' in firstIssue) {
+                return String(firstIssue.message);
+            }
+        }
+        // Fallback: try to stringify the error
+        try {
+            return JSON.stringify(error);
+        }
+        catch {
+            return String(error);
+        }
+    }
+    return String(error);
+}
+// --- Schema metadata access ---
+/**
+ * Gets the description from a schema, if available.
+ * Works with both Zod v3 and v4.
+ *
+ * Both versions expose a `.description` getter that returns the description
+ * from their respective internal storage (v3: _def, v4: globalRegistry).
+ */
+export function getSchemaDescription(schema) {
+    return schema.description;
+}
+/**
+ * Checks if a schema is optional.
+ * Works with both Zod v3 and v4.
+ */
+export function isSchemaOptional(schema) {
+    if (isZ4Schema(schema)) {
+        const v4Schema = schema;
+        return v4Schema._zod?.def?.type === 'optional';
+    }
+    const v3Schema = schema;
+    // v3 has isOptional() method
+    if (typeof schema.isOptional === 'function') {
+        return schema.isOptional();
+    }
+    return v3Schema._def?.typeName === 'ZodOptional';
+}
+/**
+ * Gets the literal value from a schema, if it's a literal schema.
+ * Works with both Zod v3 and v4.
+ * Returns undefined if the schema is not a literal or the value cannot be determined.
+ */
+export function getLiteralValue(schema) {
+    if (isZ4Schema(schema)) {
+        const v4Schema = schema;
+        const def = v4Schema._zod?.def;
+        if (def) {
+            // Try various ways to get the literal value
+            if (def.value !== undefined)
+                return def.value;
+            if (Array.isArray(def.values) && def.values.length > 0) {
+                return def.values[0];
+            }
+        }
+    }
+    const v3Schema = schema;
+    const def = v3Schema._def;
+    if (def) {
+        if (def.value !== undefined)
+            return def.value;
+        if (Array.isArray(def.values) && def.values.length > 0) {
+            return def.values[0];
+        }
+    }
+    // Fallback: check for direct value property (some Zod versions)
+    const directValue = schema.value;
+    if (directValue !== undefined)
+        return directValue;
+    return undefined;
+}
+//# sourceMappingURL=zod-compat.js.map