All files / utils/jsonify-keys/lib main.js

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/**
* @license Apache-2.0
*
* Copyright (c) 2025 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 replace = require( '@stdlib/string/replace' );
var format = require( '@stdlib/string/format' );
 
 
// MAIN //
 
/**
* Returns a normalized string that can be parsed as JSON.
*
* @param {string} str - string to parse
* @throws {TypeError} first argument must be a string
* @returns {string} normalized string
*
* @example
* var obj = jsonifyKeys( '{ beep: "boop" }' );
* // returns '{ "beep": "boop" }'
*/
function jsonifyKeys( str ) {
	if ( !isString( str ) ) {
		throw new TypeError( format( 'invalid argument. First argument must be a string. Value: `%s`.', str ) );
	}
	// Find the word that is preceded by a `{` or followed by a `:` and add quotes around it.
	return replace( str, /(\s*?{\s*?|\s*?,\s*?)(['"])?([a-zA-Z0-9_]+)(['"])?:/g, '$1"$3":' );
}
 
 
// EXPORTS //
 
module.exports = jsonifyKeys;