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client/node_modules/es-abstract/2019/InstanceofOperator.js

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