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node_modules/es-abstract/2015/GetMethod.js
| 42 lines
| 924 B
| application/javascript
| JavascriptLexer
|
| r789 | 'use strict'; | |||
| var GetIntrinsic = require('../GetIntrinsic'); | ||||
| var $TypeError = GetIntrinsic('%TypeError%'); | ||||
| var GetV = require('./GetV'); | ||||
| var IsCallable = require('./IsCallable'); | ||||
| var IsPropertyKey = require('./IsPropertyKey'); | ||||
| /** | ||||
| * 7.3.9 - https://ecma-international.org/ecma-262/6.0/#sec-getmethod | ||||
| * 1. Assert: IsPropertyKey(P) is true. | ||||
| * 2. Let func be GetV(O, P). | ||||
| * 3. ReturnIfAbrupt(func). | ||||
| * 4. If func is either undefined or null, return undefined. | ||||
| * 5. If IsCallable(func) is false, throw a TypeError exception. | ||||
| * 6. Return func. | ||||
| */ | ||||
| module.exports = function GetMethod(O, P) { | ||||
| // 7.3.9.1 | ||||
| if (!IsPropertyKey(P)) { | ||||
| throw new $TypeError('Assertion failed: IsPropertyKey(P) is not true'); | ||||
| } | ||||
| // 7.3.9.2 | ||||
| var func = GetV(O, P); | ||||
| // 7.3.9.4 | ||||
| if (func == null) { | ||||
| return void 0; | ||||
| } | ||||
| // 7.3.9.5 | ||||
| if (!IsCallable(func)) { | ||||
| throw new $TypeError(P + 'is not a function'); | ||||
| } | ||||
| // 7.3.9.6 | ||||
| return func; | ||||
| }; | ||||