time-to-botec

Benchmark sampling in different programming languages
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parse_json.js (1650B)

      1 /**
      2 * @license Apache-2.0
      3 *
      4 * Copyright (c) 2018 The Stdlib Authors.
      5 *
      6 * Licensed under the Apache License, Version 2.0 (the "License");
      7 * you may not use this file except in compliance with the License.
      8 * You may obtain a copy of the License at
      9 *
     10 *    http://www.apache.org/licenses/LICENSE-2.0
     11 *
     12 * Unless required by applicable law or agreed to in writing, software
     13 * distributed under the License is distributed on an "AS IS" BASIS,
     14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     15 * See the License for the specific language governing permissions and
     16 * limitations under the License.
     17 */
     18 
     19 'use strict';
     20 
     21 // MODULES //
     22 
     23 var isString = require( '@stdlib/assert/is-string' ).isPrimitive;
     24 var isFunction = require( '@stdlib/assert/is-function' );
     25 
     26 
     27 // MAIN //
     28 
     29 /**
     30 * Attempts to parse a string as JSON.
     31 *
     32 * @param {string} str - string to parse
     33 * @param {Function} [reviver] - transformation function
     34 * @throws {TypeError} first argument must be a string
     35 * @throws {TypeError} reviver must be a function
     36 * @returns {(*|Error)} parsed value or parse error
     37 *
     38 * @example
     39 * var obj = parseJSON( '{"beep":"boop"}' );
     40 * // returns {'beep':'boop'}
     41 */
     42 function parseJSON( str, reviver ) {
     43 	if ( !isString( str ) ) {
     44 		throw new TypeError( 'invalid argument. First argument must be a string. Value: `' + str + '`.' );
     45 	}
     46 	if ( arguments.length > 1 ) {
     47 		if ( !isFunction( reviver ) ) {
     48 			throw new TypeError( 'invalid argument. Reviver argument must be a function. Value: `' + reviver + '`.' );
     49 		}
     50 	}
     51 	try {
     52 		return JSON.parse( str, reviver );
     53 	} catch ( error ) {
     54 		return error;
     55 	}
     56 }
     57 
     58 
     59 // EXPORTS //
     60 
     61 module.exports = parseJSON;