tor-browser

The Tor Browser
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mapfn-is-symbol-throws.js (607B)

      1 // Copyright 2015 Leonardo Balter. All rights reserved.
      2 // This code is governed by the license found in the LICENSE file.
      3 /*---
      4 esid: sec-array.from
      5 description: Throws a TypeError if mapFn is not callable (Symbol)
      6 info: |
      7  22.1.2.1 Array.from ( items [ , mapfn [ , thisArg ] ] )
      8 
      9  ...
     10  2. If mapfn is undefined, let mapping be false.
     11  3. else
     12    a. If IsCallable(mapfn) is false, throw a TypeError exception.
     13    ...
     14 features:
     15  - Symbol
     16 ---*/
     17 
     18 assert.throws(TypeError, function() {
     19  Array.from([], Symbol('1'));
     20 }, 'Array.from([], Symbol("1")) throws a TypeError exception');
     21 
     22 reportCompare(0, 0);