@mastra/schema-compat/dist/zod-to-json.cjs.map

Tool schema compatibility layer for Mastra.ai

{"version":3,"file":"zod-to-json.cjs","names":["zV4"],"sources":["../src/zod-to-json.ts"],"sourcesContent":["import type { JSONSchema7 } from 'json-schema';\nimport type { ZodSchema as ZodSchemaV3 } from 'zod/v3';\nimport { z as zV4 } from 'zod/v4';\nimport type { Targets } from 'zod-to-json-schema';\nimport zodToJsonSchemaOriginal from 'zod-to-json-schema';\n\n// Symbol to mark schemas as already patched (for idempotency)\nconst PATCHED = Symbol('__mastra_patched__');\n\n/**\n * Recursively patch Zod v4 record schemas that are missing valueType.\n * This fixes a bug in Zod v4 where z.record(valueSchema) doesn't set def.valueType.\n * The single-arg form should set valueType but instead only sets keyType.\n *\n * Idempotent — marks patched schemas with a Symbol so repeat calls no-op.\n *\n * @internal Exported so the Zod v4 standard-schema adapter can apply the\n * same patch before its native `toJSONSchema` call (the legacy `zodToJsonSchema`\n * entry already calls it; the `applyCompatLayer` path otherwise wouldn't).\n * Not part of the public API.\n */\nexport function patchRecordSchemas(schema: any): any {\n  if (!schema || typeof schema !== 'object') return schema;\n\n  // Skip if already patched (idempotency check)\n  if ((schema as any)[PATCHED]) return schema;\n  (schema as any)[PATCHED] = true;\n\n  // Check the _zod.def location (v4 structure)\n  const def = schema._zod?.def;\n\n  // Fix record schemas with missing valueType\n  if (def?.type === 'record' && def.keyType && !def.valueType) {\n    // The bug: z.record(valueSchema) puts the value in keyType instead of valueType\n    // Fix: move it to valueType and set keyType to string (the default)\n    def.valueType = def.keyType;\n    def.keyType = zV4.string();\n  }\n\n  // Recursively patch nested schemas\n  if (!def) return schema;\n\n  if (def.type === 'object' && def.shape) {\n    const shape = typeof def.shape === 'function' ? def.shape() : def.shape;\n    for (const key of Object.keys(shape)) {\n      patchRecordSchemas(shape[key]);\n    }\n  }\n\n  if (def.type === 'array' && def.element) {\n    patchRecordSchemas(def.element);\n  }\n\n  if (def.type === 'union' && def.options) {\n    def.options.forEach(patchRecordSchemas);\n  }\n\n  if (def.type === 'record') {\n    if (def.keyType) patchRecordSchemas(def.keyType);\n    if (def.valueType) patchRecordSchemas(def.valueType);\n  }\n\n  // Handle intersection types\n  if (def.type === 'intersection') {\n    if (def.left) patchRecordSchemas(def.left);\n    if (def.right) patchRecordSchemas(def.right);\n  }\n\n  // Handle lazy types - patch the schema returned by the getter\n  if (def.type === 'lazy') {\n    // For lazy schemas, we need to patch the schema when it's accessed\n    // Store the original getter and wrap it\n    if (def.getter && typeof def.getter === 'function') {\n      const originalGetter = def.getter;\n      def.getter = function () {\n        const innerSchema = originalGetter();\n        if (innerSchema) {\n          patchRecordSchemas(innerSchema);\n        }\n        return innerSchema;\n      };\n    }\n  }\n\n  // Handle wrapper types that have innerType\n  // This covers: optional, nullable, default, catch, nullish, and any other wrappers\n  if (def.innerType) {\n    patchRecordSchemas(def.innerType);\n  }\n\n  return schema;\n}\n\n/**\n * Recursively fixes anyOf patterns that some providers (like OpenAI) don't accept.\n * Converts anyOf: [{type: X}, {type: \"null\"}] to type: [X, \"null\"]\n * Also fixes empty {} property schemas by converting to a union of primitive types.\n */\nfunction fixAnyOfNullable(schema: JSONSchema7): JSONSchema7 {\n  if (typeof schema !== 'object' || schema === null) {\n    return schema;\n  }\n\n  const result = { ...schema };\n\n  // Fix anyOf pattern: [{type: X}, {type: \"null\"}] or [{type: \"null\"}, {type: X}]\n  if (result.anyOf && Array.isArray(result.anyOf) && result.anyOf.length === 2) {\n    const nullSchema = result.anyOf.find((s: any) => typeof s === 'object' && s !== null && s.type === 'null');\n    const otherSchema = result.anyOf.find((s: any) => typeof s === 'object' && s !== null && s.type !== 'null');\n\n    if (nullSchema && otherSchema && typeof otherSchema === 'object' && otherSchema.type) {\n      // Convert anyOf to type array format\n      // Normalize sibling fields (like properties/items) before returning\n      const { anyOf, ...rest } = result;\n      const fixedRest = fixAnyOfNullable(rest as JSONSchema7);\n      const fixedOther = fixAnyOfNullable(otherSchema as JSONSchema7);\n      return {\n        ...fixedRest,\n        ...fixedOther,\n        type: (Array.isArray(fixedOther.type)\n          ? [...fixedOther.type, 'null']\n          : [fixedOther.type, 'null']) as JSONSchema7['type'],\n      };\n    }\n  }\n\n  // Fix empty property schemas {} - OpenAI requires a type key\n  if (result.properties && typeof result.properties === 'object' && !Array.isArray(result.properties)) {\n    result.properties = Object.fromEntries(\n      Object.entries(result.properties).map(([key, value]) => {\n        const propSchema = value as JSONSchema7;\n\n        // If property is an empty object {}, convert to allow primitive types\n        // Note: We exclude 'object' (requires additionalProperties) and 'array' (requires items) for OpenAI\n        if (\n          typeof propSchema === 'object' &&\n          propSchema !== null &&\n          !Array.isArray(propSchema) &&\n          Object.keys(propSchema).length === 0\n        ) {\n          return [key, { type: ['string', 'number', 'boolean', 'null'] as JSONSchema7['type'] }];\n        }\n\n        // Recursively fix nested schemas\n        return [key, fixAnyOfNullable(propSchema)];\n      }),\n    );\n  }\n\n  // Recursively fix items in arrays\n  if (result.items) {\n    if (Array.isArray(result.items)) {\n      result.items = result.items.map(item => fixAnyOfNullable(item as JSONSchema7));\n    } else {\n      result.items = fixAnyOfNullable(result.items as JSONSchema7);\n    }\n  }\n\n  // Recursively fix anyOf/oneOf/allOf schemas\n  if (result.anyOf && Array.isArray(result.anyOf)) {\n    result.anyOf = result.anyOf.map(s => fixAnyOfNullable(s as JSONSchema7));\n  }\n  if (result.oneOf && Array.isArray(result.oneOf)) {\n    result.oneOf = result.oneOf.map(s => fixAnyOfNullable(s as JSONSchema7));\n  }\n  if (result.allOf && Array.isArray(result.allOf)) {\n    result.allOf = result.allOf.map(s => fixAnyOfNullable(s as JSONSchema7));\n  }\n\n  return result;\n}\n\n/**\n * Recursively ensures all properties in an object schema are included in the `required` array.\n * OpenAI's strict structured output mode requires every key in `properties` to also appear in `required`.\n *\n * @param schema - The JSON Schema to process\n * @returns A new schema with all properties marked as required\n */\nexport function ensureAllPropertiesRequired(schema: JSONSchema7): JSONSchema7 {\n  if (typeof schema !== 'object' || schema === null) {\n    return schema;\n  }\n\n  const result = { ...schema };\n\n  if (result.type === 'object' && result.properties) {\n    result.required = Object.keys(result.properties);\n    result.properties = Object.fromEntries(\n      Object.entries(result.properties).map(([key, value]) => [key, ensureAllPropertiesRequired(value as JSONSchema7)]),\n    );\n  }\n\n  if (result.items) {\n    if (Array.isArray(result.items)) {\n      result.items = result.items.map(item => ensureAllPropertiesRequired(item as JSONSchema7));\n    } else if (typeof result.items === 'object') {\n      result.items = ensureAllPropertiesRequired(result.items as JSONSchema7);\n    }\n  }\n\n  if (result.additionalProperties && typeof result.additionalProperties === 'object') {\n    result.additionalProperties = ensureAllPropertiesRequired(result.additionalProperties as JSONSchema7);\n  }\n\n  if (result.anyOf && Array.isArray(result.anyOf)) {\n    result.anyOf = result.anyOf.map(s => ensureAllPropertiesRequired(s as JSONSchema7));\n  }\n  if (result.oneOf && Array.isArray(result.oneOf)) {\n    result.oneOf = result.oneOf.map(s => ensureAllPropertiesRequired(s as JSONSchema7));\n  }\n  if (result.allOf && Array.isArray(result.allOf)) {\n    result.allOf = result.allOf.map(s => ensureAllPropertiesRequired(s as JSONSchema7));\n  }\n\n  return result;\n}\n\n/**\n * Prepare a JSON Schema for OpenAI strict mode by ensuring all object properties\n * are required and all objects have additionalProperties: false.\n */\nexport function prepareJsonSchemaForOpenAIStrictMode(schema: JSONSchema7): JSONSchema7 {\n  const withRequired = ensureAllPropertiesRequired(schema);\n  return ensureAdditionalPropertiesFalse(withRequired);\n}\n\nfunction ensureAdditionalPropertiesFalse(schema: JSONSchema7): JSONSchema7 {\n  if (typeof schema !== 'object' || schema === null) {\n    return schema;\n  }\n\n  const result = { ...schema };\n\n  if (result.type === 'object' || result.properties) {\n    result.additionalProperties = false;\n  }\n\n  if (result.properties) {\n    result.properties = Object.fromEntries(\n      Object.entries(result.properties).map(([key, value]) => [\n        key,\n        ensureAdditionalPropertiesFalse(value as JSONSchema7),\n      ]),\n    );\n  }\n\n  if (result.items) {\n    if (Array.isArray(result.items)) {\n      result.items = result.items.map(item => ensureAdditionalPropertiesFalse(item as JSONSchema7));\n    } else if (typeof result.items === 'object') {\n      result.items = ensureAdditionalPropertiesFalse(result.items as JSONSchema7);\n    }\n  }\n\n  if (result.anyOf && Array.isArray(result.anyOf)) {\n    result.anyOf = result.anyOf.map(s => ensureAdditionalPropertiesFalse(s as JSONSchema7));\n  }\n  if (result.oneOf && Array.isArray(result.oneOf)) {\n    result.oneOf = result.oneOf.map(s => ensureAdditionalPropertiesFalse(s as JSONSchema7));\n  }\n  if (result.allOf && Array.isArray(result.allOf)) {\n    result.allOf = result.allOf.map(s => ensureAdditionalPropertiesFalse(s as JSONSchema7));\n  }\n\n  return result;\n}\n\n// export function zotToJsonSchema(zodSchema: ZodSchemaV3 | ZodSchemaV4, target: Targets = 'jsonSchema7', strategy: 'none' | 'seen' | 'root' | 'relative' = 'relative'): JSONSchema7 {\n//   const target = 'draft-07' as StandardJSONSchemaV1.Target;\n//   const standardSchema = toStandardSchema(zodSchema);\n//   const jsonSchema = standardSchemaToJSONSchema(standardSchema, {\n//     target,\n//   });\n\n//   traverse(jsonSchema, {\n//     cb: {\n//       pre: (schema, jsonPtr, rootSchema, parentJsonPtr, parentKeyword, parentSchema) => {\n//         this.preProcessJSONNode(schema, parentSchema);\n//       },\n//       post: (schema, jsonPtr, rootSchema, parentJsonPtr, parentKeyword, parentSchema) => {\n//         this.postProcessJSONNode(schema, parentSchema);\n//       },\n//     },\n//   });\n\n// }\n\nexport function zodToJsonSchema(\n  zodSchema: any,\n  target: Targets = 'jsonSchema7',\n  strategy: 'none' | 'seen' | 'root' | 'relative' = 'relative',\n): JSONSchema7 {\n  // Route based on whether the schema is v4 (has _zod) or v3 (only has _def).\n  // We use zV4.toJSONSchema (imported from 'zod/v4') for v4 schemas, since the\n  // default 'zod' import may resolve to v3 depending on the environment.\n  // Without this check, v3 schemas passed to v4's toJSONSchema would throw\n  // \"Cannot read properties of undefined (reading 'def')\".\n  if (zodSchema?._zod) {\n    // Zod v4 path - patch record schemas before converting\n    patchRecordSchemas(zodSchema);\n\n    const jsonSchema = zV4.toJSONSchema(zodSchema, {\n      unrepresentable: 'any',\n      io: 'input',\n      override: (ctx: any) => {\n        // Handle both Zod v4 structures: _def directly or nested in _zod\n        const def = ctx.zodSchema?._def || ctx.zodSchema?._zod?.def;\n        // Check for date type using both possible property names\n        if (def && (def.typeName === 'ZodDate' || def.type === 'date')) {\n          ctx.jsonSchema.type = 'string';\n          ctx.jsonSchema.format = 'date-time';\n        }\n        // Add additionalProperties: false for object types to match Zod v3 behavior\n        // This is required for OpenAI strict mode function calling\n        if (def && (def.typeName === 'ZodObject' || def.type === 'object')) {\n          ctx.jsonSchema.additionalProperties = false;\n        }\n      },\n    }) as JSONSchema7;\n\n    // Fix anyOf patterns for nullable fields - required for OpenAI compatibility\n    return fixAnyOfNullable(jsonSchema);\n  } else {\n    // Zod v3 path - 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