@aws-lambda-powertools/jmespath/lib/esm/PowertoolsFunctions.js

A type safe and modern jmespath module to parse and extract data from JSON documents using JMESPath

var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
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    return c > 3 && r && Object.defineProperty(target, key, r), r;
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import { gunzipSync } from 'node:zlib';
import { fromBase64 } from '@aws-lambda-powertools/commons/utils/base64';
import { Functions } from './Functions.js';
const decoder = new TextDecoder('utf-8');
/**
 * Custom functions for the Powertools for AWS Lambda JMESPath module.
 *
 * Built-in JMESPath functions include: `powertools_json`, `powertools_base64`, `powertools_base64_gzip`
 *
 * You can use these functions to decode and/or deserialize JSON objects when using the {@link index.search | search} function.
 *
 * @example
 * ```typescript
 * import { search } from '@aws-lambda-powertools/jmespath';
 * import { PowertoolsFunctions } from '@aws-lambda-powertools/jmespath/functions';
 *
 * const data = {
 *   body: "{\"foo\": \"bar\"}"
 * };
 *
 * const result = search(
 *   'powertools_json(body)',
 *   data,
 *   { customFunctions: new PowertoolsFunctions() }
 * );
 * console.log(result); // { foo: 'bar' }
 * ```
 *
 * When using the {@link envelopes.extractDataFromEnvelope} function, the PowertoolsFunctions class is automatically used.
 *
 */
class PowertoolsFunctions extends Functions {
    funcPowertoolsBase64(value) {
        return decoder.decode(fromBase64(value, 'base64'));
    }
    funcPowertoolsBase64Gzip(value) {
        const encoded = fromBase64(value, 'base64');
        const uncompressed = gunzipSync(encoded);
        return uncompressed.toString();
    }
    funcPowertoolsJson(value) {
        return JSON.parse(value);
    }
}
__decorate([
    Functions.signature({
        argumentsSpecs: [['string']],
    })
], PowertoolsFunctions.prototype, "funcPowertoolsBase64", null);
__decorate([
    Functions.signature({
        argumentsSpecs: [['string']],
    })
], PowertoolsFunctions.prototype, "funcPowertoolsBase64Gzip", null);
__decorate([
    Functions.signature({
        argumentsSpecs: [['string']],
    })
], PowertoolsFunctions.prototype, "funcPowertoolsJson", null);
export { PowertoolsFunctions, Functions };