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43 lines
922 B
43 lines
922 B
2 years ago
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'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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