posix.js (1301B)
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( './../../is-string' ).isPrimitive; 24 25 26 // MAIN // 27 28 /** 29 * Tests if a value is a POSIX absolute path. 30 * 31 * @param {*} value - value to test 32 * @returns {boolean} boolean indicating if a value is a POSIX absolute path 33 * 34 * @example 35 * var bool = isAbsolutePath( '/foo/bar/baz' ); 36 * // returns true 37 * 38 * @example 39 * var bool = isAbsolutePath( 'foo/bar/baz' ); 40 * // returns false 41 */ 42 function isAbsolutePath( value ) { 43 // Must be string longer than `0` characters and start with a forward slash '/': 44 return ( 45 isString( value ) && 46 value.length > 0 && 47 value.charCodeAt( 0 ) === 47 48 ); 49 } 50 51 52 // EXPORTS // 53 54 module.exports = isAbsolutePath;