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