source: imaps-frontend/node_modules/es-abstract/2019/InternalizeJSONProperty.js

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Last change on this file was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago

Update repo after prototype presentation

  • Property mode set to 100644
File size: 2.1 KB
Line 
1'use strict';
2
3var $TypeError = require('es-errors/type');
4
5var Call = require('./Call');
6var CreateDataProperty = require('./CreateDataProperty');
7var EnumerableOwnPropertyNames = require('./EnumerableOwnPropertyNames');
8var Get = require('./Get');
9var IsArray = require('./IsArray');
10var ToLength = require('./ToLength');
11var ToString = require('./ToString');
12var Type = require('./Type');
13
14var forEach = require('../helpers/forEach');
15
16// https://262.ecma-international.org/9.0/#sec-internalizejsonproperty
17
18// note: `reviver` was implicitly closed-over until ES2020, where it becomes a third argument
19
20module.exports = function InternalizeJSONProperty(holder, name, reviver) {
21 if (Type(holder) !== 'Object') {
22 throw new $TypeError('Assertion failed: `holder` is not an Object');
23 }
24 if (typeof name !== 'string') {
25 throw new $TypeError('Assertion failed: `name` is not a String');
26 }
27 if (typeof reviver !== 'function') {
28 throw new $TypeError('Assertion failed: `reviver` is not a Function');
29 }
30
31 var val = Get(holder, name); // step 1
32
33 if (Type(val) === 'Object') { // step 2
34 var isArray = IsArray(val); // step 2.a
35 if (isArray) { // step 2.b
36 var I = 0; // step 2.b.i
37
38 var len = ToLength(Get(val, 'length')); // step 2.b.ii
39
40 while (I < len) { // step 2.b.iii
41 var newElement = InternalizeJSONProperty(val, ToString(I), reviver); // step 2.b.iv.1
42
43 if (typeof newElement === 'undefined') { // step 2.b.iii.2
44 delete val[ToString(I)]; // step 2.b.iii.2.a
45 } else { // step 2.b.iii.3
46 CreateDataProperty(val, ToString(I), newElement); // step 2.b.iii.3.a
47 }
48
49 I += 1; // step 2.b.iii.4
50 }
51 } else { // step 2.c
52 var keys = EnumerableOwnPropertyNames(val, 'key'); // step 2.c.i
53
54 forEach(keys, function (P) { // step 2.c.ii
55 // eslint-disable-next-line no-shadow
56 var newElement = InternalizeJSONProperty(val, P, reviver); // step 2.c.ii.1
57
58 if (typeof newElement === 'undefined') { // step 2.c.ii.2
59 delete val[P]; // step 2.c.ii.2.a
60 } else { // step 2.c.ii.3
61 CreateDataProperty(val, P, newElement); // step 2.c.ii.3.a
62 }
63 });
64 }
65 }
66
67 return Call(reviver, holder, [name, val]); // step 3
68};
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