ajv-provider.js•3.25 kB
"use strict";
/**
* AJV-based JSON Schema validator provider
*/
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.AjvJsonSchemaValidator = void 0;
const ajv_1 = require("ajv");
const ajv_formats_1 = __importDefault(require("ajv-formats"));
function createDefaultAjvInstance() {
const ajv = new ajv_1.Ajv({
strict: false,
validateFormats: true,
validateSchema: false,
allErrors: true
});
const addFormats = ajv_formats_1.default;
addFormats(ajv);
return ajv;
}
/**
* @example
* ```typescript
* // Use with default AJV instance (recommended)
* import { AjvJsonSchemaValidator } from '@modelcontextprotocol/sdk/validation/ajv';
* const validator = new AjvJsonSchemaValidator();
*
* // Use with custom AJV instance
* import { Ajv } from 'ajv';
* const ajv = new Ajv({ strict: true, allErrors: true });
* const validator = new AjvJsonSchemaValidator(ajv);
* ```
*/
class AjvJsonSchemaValidator {
/**
* Create an AJV validator
*
* @param ajv - Optional pre-configured AJV instance. If not provided, a default instance will be created.
*
* @example
* ```typescript
* // Use default configuration (recommended for most cases)
* import { AjvJsonSchemaValidator } from '@modelcontextprotocol/sdk/validation/ajv';
* const validator = new AjvJsonSchemaValidator();
*
* // Or provide custom AJV instance for advanced configuration
* import { Ajv } from 'ajv';
* import addFormats from 'ajv-formats';
*
* const ajv = new Ajv({ validateFormats: true });
* addFormats(ajv);
* const validator = new AjvJsonSchemaValidator(ajv);
* ```
*/
constructor(ajv) {
this._ajv = ajv !== null && ajv !== void 0 ? ajv : createDefaultAjvInstance();
}
/**
* Create a validator for the given JSON Schema
*
* The validator is compiled once and can be reused multiple times.
* If the schema has an $id, it will be cached by AJV automatically.
*
* @param schema - Standard JSON Schema object
* @returns A validator function that validates input data
*/
getValidator(schema) {
var _a;
// Check if schema has $id and is already compiled/cached
const ajvValidator = '$id' in schema && typeof schema.$id === 'string'
? ((_a = this._ajv.getSchema(schema.$id)) !== null && _a !== void 0 ? _a : this._ajv.compile(schema))
: this._ajv.compile(schema);
return (input) => {
const valid = ajvValidator(input);
if (valid) {
return {
valid: true,
data: input,
errorMessage: undefined
};
}
else {
return {
valid: false,
data: undefined,
errorMessage: this._ajv.errorsText(ajvValidator.errors)
};
}
};
}
}
exports.AjvJsonSchemaValidator = AjvJsonSchemaValidator;
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