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31 lines
918 B
31 lines
918 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 $hasInstance = GetIntrinsic('Symbol.hasInstance', true);
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var Call = require('./Call');
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var GetMethod = require('./GetMethod');
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var IsCallable = require('./IsCallable');
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var OrdinaryHasInstance = require('./OrdinaryHasInstance');
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var ToBoolean = require('./ToBoolean');
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var Type = require('./Type');
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// https://ecma-international.org/ecma-262/6.0/#sec-instanceofoperator
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module.exports = function InstanceofOperator(O, C) {
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if (Type(O) !== 'Object') {
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throw new $TypeError('Assertion failed: Type(O) is not Object');
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}
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var instOfHandler = $hasInstance ? GetMethod(C, $hasInstance) : void 0;
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if (typeof instOfHandler !== 'undefined') {
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return ToBoolean(Call(instOfHandler, C, [O]));
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}
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if (!IsCallable(C)) {
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throw new $TypeError('`C` is not Callable');
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}
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return OrdinaryHasInstance(C, O);
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};
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