62 lines
1.6 KiB
JavaScript
62 lines
1.6 KiB
JavaScript
|
/**
|
||
|
|
* @license Apache-2.0
|
||
|
|
*
|
||
|
|
* Copyright (c) 2018 The Stdlib Authors.
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
// MODULES //
|
||
|
|
|
||
|
|
var isString = require( '@stdlib/assert/is-string' ).isPrimitive;
|
||
|
|
var isFunction = require( '@stdlib/assert/is-function' );
|
||
|
|
|
||
|
|
|
||
|
|
// MAIN //
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Attempts to parse a string as JSON.
|
||
|
|
*
|
||
|
|
* @param {string} str - string to parse
|
||
|
|
* @param {Function} [reviver] - transformation function
|
||
|
|
* @throws {TypeError} first argument must be a string
|
||
|
|
* @throws {TypeError} reviver must be a function
|
||
|
|
* @returns {(*|Error)} parsed value or parse error
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* var obj = parseJSON( '{"beep":"boop"}' );
|
||
|
|
* // returns {'beep':'boop'}
|
||
|
|
*/
|
||
|
|
function parseJSON( str, reviver ) {
|
||
|
|
if ( !isString( str ) ) {
|
||
|
|
throw new TypeError( 'invalid argument. First argument must be a string. Value: `' + str + '`.' );
|
||
|
|
}
|
||
|
|
if ( arguments.length > 1 ) {
|
||
|
|
if ( !isFunction( reviver ) ) {
|
||
|
|
throw new TypeError( 'invalid argument. Reviver argument must be a function. Value: `' + reviver + '`.' );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
try {
|
||
|
|
return JSON.parse( str, reviver );
|
||
|
|
} catch ( error ) {
|
||
|
|
return error;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// EXPORTS //
|
||
|
|
|
||
|
|
module.exports = parseJSON;
|