152 lines
4.4 KiB
Markdown
152 lines
4.4 KiB
Markdown
### Version 4.0.0 (2018-01-28) ###
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- Added: Support for ES2018. The only change needed was recognizing the `s`
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regex flag.
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- Changed: _All_ tokens returned by the `matchToToken` function now have a
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`closed` property. It is set to `undefined` for the tokens where “closed”
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doesn’t make sense. This means that all tokens objects have the same shape,
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which might improve performance.
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These are the breaking changes:
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- `'/a/s'.match(jsTokens)` no longer returns `['/', 'a', '/', 's']`, but
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`['/a/s']`. (There are of course other variations of this.)
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- Code that rely on some token objects not having the `closed` property could
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now behave differently.
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### Version 3.0.2 (2017-06-28) ###
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- No code changes. Just updates to the readme.
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### Version 3.0.1 (2017-01-30) ###
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- Fixed: ES2015 unicode escapes with more than 6 hex digits are now matched
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correctly.
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### Version 3.0.0 (2017-01-11) ###
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This release contains one breaking change, that should [improve performance in
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V8][v8-perf]:
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> So how can you, as a JavaScript developer, ensure that your RegExps are fast?
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> If you are not interested in hooking into RegExp internals, make sure that
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> neither the RegExp instance, nor its prototype is modified in order to get the
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> best performance:
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>
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> ```js
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> var re = /./g;
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> re.exec(''); // Fast path.
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> re.new_property = 'slow';
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> ```
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This module used to export a single regex, with `.matchToToken` bolted
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on, just like in the above example. This release changes the exports of
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the module to avoid this issue.
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Before:
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```js
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import jsTokens from "js-tokens"
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// or:
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var jsTokens = require("js-tokens")
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var matchToToken = jsTokens.matchToToken
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```
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After:
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```js
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import jsTokens, {matchToToken} from "js-tokens"
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// or:
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var jsTokens = require("js-tokens").default
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var matchToToken = require("js-tokens").matchToToken
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```
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[v8-perf]: http://v8project.blogspot.se/2017/01/speeding-up-v8-regular-expressions.html
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### Version 2.0.0 (2016-06-19) ###
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- Added: Support for ES2016. In other words, support for the `**` exponentiation
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operator.
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These are the breaking changes:
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- `'**'.match(jsTokens)` no longer returns `['*', '*']`, but `['**']`.
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- `'**='.match(jsTokens)` no longer returns `['*', '*=']`, but `['**=']`.
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### Version 1.0.3 (2016-03-27) ###
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- Improved: Made the regex ever so slightly smaller.
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- Updated: The readme.
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### Version 1.0.2 (2015-10-18) ###
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- Improved: Limited npm package contents for a smaller download. Thanks to
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@zertosh!
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### Version 1.0.1 (2015-06-20) ###
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- Fixed: Declared an undeclared variable.
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### Version 1.0.0 (2015-02-26) ###
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- Changed: Merged the 'operator' and 'punctuation' types into 'punctuator'. That
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type is now equivalent to the Punctuator token in the ECMAScript
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specification. (Backwards-incompatible change.)
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- Fixed: A `-` followed by a number is now correctly matched as a punctuator
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followed by a number. It used to be matched as just a number, but there is no
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such thing as negative number literals. (Possibly backwards-incompatible
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change.)
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### Version 0.4.1 (2015-02-21) ###
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- Added: Support for the regex `u` flag.
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### Version 0.4.0 (2015-02-21) ###
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- Improved: `jsTokens.matchToToken` performance.
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- Added: Support for octal and binary number literals.
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- Added: Support for template strings.
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### Version 0.3.1 (2015-01-06) ###
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- Fixed: Support for unicode spaces. They used to be allowed in names (which is
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very confusing), and some unicode newlines were wrongly allowed in strings and
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regexes.
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### Version 0.3.0 (2014-12-19) ###
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- Changed: The `jsTokens.names` array has been replaced with the
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`jsTokens.matchToToken` function. The capturing groups of `jsTokens` are no
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longer part of the public API; instead use said function. See this [gist] for
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an example. (Backwards-incompatible change.)
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- Changed: The empty string is now considered an “invalid” token, instead an
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“empty” token (its own group). (Backwards-incompatible change.)
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- Removed: component support. (Backwards-incompatible change.)
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[gist]: https://gist.github.com/lydell/be49dbf80c382c473004
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### Version 0.2.0 (2014-06-19) ###
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- Changed: Match ES6 function arrows (`=>`) as an operator, instead of its own
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category (“functionArrow”), for simplicity. (Backwards-incompatible change.)
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- Added: ES6 splats (`...`) are now matched as an operator (instead of three
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punctuations). (Backwards-incompatible change.)
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### Version 0.1.0 (2014-03-08) ###
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- Initial release.
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