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paulmillr/es6-shim
ECMAScript 6 compatibility shims for legacy JS engines
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Es6 Shim 0.31.3

Es6 Shim: 0.31.3 Release

Release date:
June 2, 2015
Previous version:
0.31.2 (released May 9, 2015)
Magnitude:
977 Diff Delta
Contributors:
1 total committer
Data confidence:
Commits:
23 impacting commits

23 Commits in this Release

Ordered by the degree to which they evolved the repo in this version.

Cache more native methods in case they're overwritten later.
Authored May 31, 2015
Add more `Map`/`Set` fast paths for more primitives: boolean, null, undefined.
Authored May 29, 2015
Fix an IE bug where the layout engine internally calls the userland `Object.getOwnPropertyNames`.
Authored May 31, 2015
Properly name more functions.
Authored June 1, 2015
v0.31.3
Authored June 2, 2015
Prefer function expressions to declarations.
Authored June 2, 2015
IE 9 `preventExtensions` doesn't throw, even in strict mode.
Authored May 31, 2015
IE 11 has native `Map`/`Set`, but it takes an optional *function*, not an optional iterable, in the constructor.
Authored May 29, 2015
Avoid shadowing variable names.
Authored June 2, 2015
No need to declare variables at the top.
Authored June 2, 2015
Prefer `if`/`else` (or map lookup) to `switch`
Authored June 2, 2015
Test on `io.js` `v2.2`
Authored June 1, 2015
Avoid reassigning to arguments.
Authored June 2, 2015
Test on `io.js` `v2.1`
Authored May 25, 2015
Ensure `Set.prototype[Symbol.iterator] === Set.prototype.values` is true.
Authored June 1, 2015
Make sure `Set.prototype.keys` is set to `Set.prototype.values`.
Authored June 1, 2015
Ensure `Map.prototype[Symbol.iterator] === Map.prototype.entries` is true.
Authored June 1, 2015
Update `es5-shim`
Authored May 25, 2015
s/\t/ /g
Authored June 2, 2015
Update `es5-shim`, `uglify-js`
Authored May 21, 2015
Update `es5-shim`, `jshint`
Authored June 1, 2015
Update `mocha`
Authored May 15, 2015
Alphabetize shim lists in the README.
Authored May 29, 2015

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Top Contributors in 0.31.3

ljharb

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Release Notes Published

Fixes

  • Properly name more shim functions
  • Fix an IE bug where the layout engine internally calls the userland Object.getOwnPropertyNames (#333)
  • Ensure Map.prototype[Symbol.iterator] === Map.prototype.entries
  • Ensure Set.prototype[Symbol.iterator] === Set.prototype.values

Security/Robustness

  • - Cache more native methods in case they're overwritten later

Performance

  • Add more Map/Set fast paths for more primitives: boolean, null, undefined

Tests

  • Object.assign pending exceptions: IE 9 preventExtensions doesn't throw, even in strict mode
  • IE 11 has native Map/Set, but it takes an optional function, not an optional iterable, in the constructor
  • Add more "exists" early bailouts, to declutter native test results
  • Test up to io.js v2.2

Docs

  • Alphabetize shim lists in the README

Dependencies

  • Update mocha, es5-shim, uglify-js, jshint

Refactoring

  • Style cleanups
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