README.md (2132B)
1 <!-- 2 3 @license Apache-2.0 4 5 Copyright (c) 2018 The Stdlib Authors. 6 7 Licensed under the Apache License, Version 2.0 (the "License"); 8 you may not use this file except in compliance with the License. 9 You may obtain a copy of the License at 10 11 http://www.apache.org/licenses/LICENSE-2.0 12 13 Unless required by applicable law or agreed to in writing, software 14 distributed under the License is distributed on an "AS IS" BASIS, 15 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 See the License for the specific language governing permissions and 17 limitations under the License. 18 19 --> 20 21 # isPrimitive 22 23 > Test if a value is a JavaScript primitive. 24 25 <section class="usage"> 26 27 ## Usage 28 29 ```javascript 30 var isPrimitive = require( '@stdlib/assert/is-primitive' ); 31 ``` 32 33 #### isPrimitive( value ) 34 35 Tests if a `value` is a JavaScript primitive. 36 37 ```javascript 38 var bool = isPrimitive( false ); 39 // returns true 40 ``` 41 42 </section> 43 44 <!-- /.usage --> 45 46 <section class="notes"> 47 48 ## Notes 49 50 - Seven primitives: 51 52 - `string` 53 - `number` 54 - `boolean` 55 - `null` 56 - `undefined` 57 - `symbol` (ES6/ES2015) 58 - `bigint` (ES11/ES2020) 59 60 </section> 61 62 <!-- /.notes --> 63 64 <section class="examples"> 65 66 ## Examples 67 68 <!-- eslint-disable no-restricted-syntax, no-new-object, no-new-wrappers, no-empty-function, no-array-constructor --> 69 70 <!-- eslint no-undef: "error" --> 71 72 ```javascript 73 var isPrimitive = require( '@stdlib/assert/is-primitive' ); 74 75 var bool = isPrimitive( false ); 76 // returns true 77 78 bool = isPrimitive( 0 ); 79 // returns true 80 81 bool = isPrimitive( '' ); 82 // returns true 83 84 bool = isPrimitive( null ); 85 // returns true 86 87 bool = isPrimitive( void 0 ); 88 // returns true 89 90 bool = isPrimitive( [] ); 91 // returns false 92 93 bool = isPrimitive( {} ); 94 // returns false 95 96 bool = isPrimitive( function noop() {} ); 97 // returns false 98 99 bool = isPrimitive( new Boolean() ); 100 // returns false 101 102 bool = isPrimitive( new String() ); 103 // returns false 104 105 bool = isPrimitive( new Array() ); 106 // returns false 107 108 bool = isPrimitive( new Object() ); 109 // returns false 110 ``` 111 112 </section> 113 114 <!-- /.examples --> 115 116 <section class="links"> 117 118 </section> 119 120 <!-- /.links -->