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