Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 53x 53x 53x 53x 53x 53x 53x 53x 8x 8x 45x 53x 27x 27x 18x 18x 27x 53x 2x 2x 53x 17x 53x 8x 8x 25x 53x 1x 1x 1x 1x 1x | /**
* @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 isArray = require( '@stdlib/assert/is-array' );
var format = require( '@stdlib/string/format' );
var validate = require( './validate.js' );
var defaults = require( './defaults.js' );
var has = require( './has.js' );
// MAIN //
/**
* Tests whether an object contains a nested key path, either own or inherited.
*
* @param {*} value - value to test
* @param {(string|Array)} path - key path
* @param {Options} [options] - function options
* @param {string} [options.sep='.'] - key path separator
* @throws {TypeError} second argument must be a string or key array
* @throws {TypeError} options argument must be an object
* @throws {TypeError} must provide valid options
* @returns {boolean} boolean indicating whether an object has a nested property
*
* @example
* function Foo() {
* return this;
* }
* Foo.prototype.b = {
* 'c': 'd'
* };
*
* var obj = {
* 'a': new Foo()
* };
*
* var bool = deepHasProp( obj, 'a.b.c' );
* // returns true
*
* @example
* var arr = [
* {
* 'a': [
* {
* 'b': [
* { 'c': 'd' },
* { 'e': 'f' }
* ]
* }
* ]
* }
* ];
* var bool = deepHasProp( arr, '0.a.0.b.0.c' );
* // returns true
*
* @example
* var obj = { 'a': { 'b': { 'c': 'd' } } };
* var bool = deepHasProp( obj, [ 'a', 'b', 'c' ] );
* // returns true
*
* @example
* var obj = { 'a': { 'b': { 'c': 'd' } } };
* var bool = deepHasProp( obj, 'a/b/c', {
* 'sep': '/'
* });
* // returns true
*/
function deepHasProp( value, path, options ) {
var isStr;
var props;
var opts;
var err;
isStr = isString( path );
if ( !isStr && !isArray( path ) ) {
throw new TypeError( format( 'invalid argument. Key path must be a string or a key array. Value: `%s`.', path ) );
}
opts = defaults();
if ( arguments.length > 2 ) {
err = validate( opts, options );
if ( err ) {
throw err;
}
}
if ( value === void 0 || value === null ) {
return false;
}
if ( isStr ) {
props = path.split( opts.sep );
} else {
props = path;
}
return has( value, props );
}
// EXPORTS //
module.exports = deepHasProp;
|