source: node_modules/ramda/es/dissocPath.js

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Last change on this file was d24f17c, checked in by Aleksandar Panovski <apano77@…>, 15 months ago

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1import _curry2 from "./internal/_curry2.js";
2import _dissoc from "./internal/_dissoc.js";
3import _isInteger from "./internal/_isInteger.js";
4import _isArray from "./internal/_isArray.js";
5import assoc from "./assoc.js";
6/**
7 * Makes a shallow clone of an object. Note that this copies and flattens
8 * prototype properties onto the new object as well. All non-primitive
9 * properties are copied by reference.
10 *
11 * @private
12 * @param {String|Integer} prop The prop operating
13 * @param {Object|Array} obj The object to clone
14 * @return {Object|Array} A new object equivalent to the original.
15 */
16
17function _shallowCloneObject(prop, obj) {
18 if (_isInteger(prop) && _isArray(obj)) {
19 return [].concat(obj);
20 }
21
22 var result = {};
23
24 for (var p in obj) {
25 result[p] = obj[p];
26 }
27
28 return result;
29}
30/**
31 * Makes a shallow clone of an object, omitting the property at the given path.
32 * Note that this copies and flattens prototype properties onto the new object
33 * as well. All non-primitive properties are copied by reference.
34 *
35 * @func
36 * @memberOf R
37 * @since v0.11.0
38 * @category Object
39 * @typedefn Idx = String | Int | Symbol
40 * @sig [Idx] -> {k: v} -> {k: v}
41 * @param {Array} path The path to the value to omit
42 * @param {Object} obj The object to clone
43 * @return {Object} A new object without the property at path
44 * @see R.assocPath
45 * @example
46 *
47 * R.dissocPath(['a', 'b', 'c'], {a: {b: {c: 42}}}); //=> {a: {b: {}}}
48 */
49
50
51var dissocPath =
52/*#__PURE__*/
53_curry2(function dissocPath(path, obj) {
54 if (obj == null) {
55 return obj;
56 }
57
58 switch (path.length) {
59 case 0:
60 return obj;
61
62 case 1:
63 return _dissoc(path[0], obj);
64
65 default:
66 var head = path[0];
67 var tail = Array.prototype.slice.call(path, 1);
68
69 if (obj[head] == null) {
70 return _shallowCloneObject(head, obj);
71 } else {
72 return assoc(head, dissocPath(tail, obj[head]), obj);
73 }
74
75 }
76});
77
78export default dissocPath;
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