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// Copyright (C) 2016 The V8 Project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 18.2.3
esid: sec-isnan-number
description: >
Throws a TypeError if the result of calling number.@@toPrimitive is a symbol
info: |
isNaN (number)
1. Let num be ? ToNumber(number).
ToNumber ( argument )
1. Let primValue be ? ToPrimitive(argument, hint Number).
2. Return ? ToNumber(primValue).
ToPrimitive ( input [ , PreferredType ] )
[...]
4. Let exoticToPrim be ? GetMethod(input, @@toPrimitive).
5. If exoticToPrim is not undefined, then
a. Let result be ? Call(exoticToPrim, input, « hint »).
b. If Type(result) is not Object, return result.
features: [Symbol.toPrimitive]
---*/
var obj = {};
obj[Symbol.toPrimitive] = function() {
return Symbol.toPrimitive;
};
assert.throws(TypeError, function() {
isNaN(obj);
});
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