source: trip-planner-front/node_modules/parse5/lib/utils/mixin.js@ 84d0fbb

Last change on this file since 84d0fbb was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 900 bytes
Line 
1'use strict';
2
3class Mixin {
4 constructor(host) {
5 const originalMethods = {};
6 const overriddenMethods = this._getOverriddenMethods(this, originalMethods);
7
8 for (const key of Object.keys(overriddenMethods)) {
9 if (typeof overriddenMethods[key] === 'function') {
10 originalMethods[key] = host[key];
11 host[key] = overriddenMethods[key];
12 }
13 }
14 }
15
16 _getOverriddenMethods() {
17 throw new Error('Not implemented');
18 }
19}
20
21Mixin.install = function(host, Ctor, opts) {
22 if (!host.__mixins) {
23 host.__mixins = [];
24 }
25
26 for (let i = 0; i < host.__mixins.length; i++) {
27 if (host.__mixins[i].constructor === Ctor) {
28 return host.__mixins[i];
29 }
30 }
31
32 const mixin = new Ctor(host, opts);
33
34 host.__mixins.push(mixin);
35
36 return mixin;
37};
38
39module.exports = Mixin;
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