tor-browser

The Tor Browser
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binding-not-blocked-by-unscopables-non-obj.js (1009B)

      1 // Copyright 2015 Mike Pennisi. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 
      4 /*---
      5 es6id: 8.1.1.2.1
      6 description: Non-object values of `Symbol.unscopables` property are ignored
      7 info: |
      8    [...]
      9    6. If the withEnvironment flag of envRec is false, return true.
     10    7. Let unscopables be Get(bindings, @@unscopables).
     11    8. ReturnIfAbrupt(unscopables).
     12    9. If Type(unscopables) is Object, then
     13       a. Let blocked be ToBoolean(Get(unscopables, N)).
     14       b. ReturnIfAbrupt(blocked).
     15       c. If blocked is true, return false.
     16    10. Return true.
     17 
     18    ES6: 13.11.7 (The `with` Statement) Runtime Semantics: Evaluation
     19    [...]
     20    6. Set the withEnvironment flag of newEnv’s EnvironmentRecord to true.
     21    [...]
     22 flags: [noStrict]
     23 features: [Symbol.unscopables]
     24 ---*/
     25 
     26 var test262ToString = {};
     27 var env = { toString: test262ToString };
     28 env[Symbol.unscopables] = '';
     29 
     30 with (env) {
     31  assert.sameValue(toString, test262ToString);
     32 }
     33 
     34 reportCompare(0, 0);