coderaiser

I suggest you to use `socket.io + express`. `express.io` use old version of socket.io [v0.9.16](https://github.com/techpines/express.io/blob/master/package.json#L45), but there is version [1.1.0](http://socket.io/blog/socket-io-1-1-0/) and second one is much better and stable. Anyway you...

Would be great to have ability of tracking progress of packing. When we have a lot files, operation could keep going really long time. For example [tar-fs](https://github.com/mafintosh/tar-fs) has optional `map`...

This code is not valid: ``` const t2 = (b, {a}) = a; ``` Sometimes because of a typo such valid code can be written as well: ```js const createRegExp...

From deepscan.io: ``` Character range 'A-z' also matches non-alphabetical characters '[', '\', ']', '^', '_' and '`'. Did you mean 'A-Za-z' instead? ``` After transforming `[a-zA-Z]`

Broken optimization `/^[\p{Mc}\p{Me}\p{Mn}]$/` -> `/^[Mcen\p{}]$/`

2

``` invalid Unicode escape \p ``` Or ```js SyntaxError: Invalid regular expression: /^[Mcen\p{}]$/: Invalid property name in character class ```

Invalid regular expression: /\${[^}]+}/: Incomplete quantifier

6

After optimization: `/\$\{[^}]+\}/u` -> `/\${[^}]+}/u`, I have `Invalid regular expression` error: ```sh const regex1 = /\$\{[^}]+\}/u const regex2 = /\${[^}]+}/u; VM356:1 Uncaught SyntaxError: Invalid regular expression: /\${[^}]+}/: Incomplete quantifier at...

Question about Optimization

1

Thank you for a library with such hight quality :). I just integrated `regexp-tree` into [Putout linter](https://github.com/coderaiser/putout/tree/master/packages/plugin-regexp), [run it on my code](https://github.com/coderaiser/putout/commit/23151e22b668f5260e800a301b37340e7d12611a), and had seen a strange optimization: ```js require('regexp-tree').optimize(/[=!]/).toString()...

Version information

3

`qi.yaml` definitely should have information about [package version](http://semver.org/). As it [bower does](https://github.com/bower/spec/blob/master/json.md), for example.

Fixed install warning

10

``` cpp ./src/unix/pty.cc: In function ‘v8::Handle PtyFork(const v8::Arguments&)’: ../src/unix/pty.cc:185:34: warning: ignoring return value of ‘int chdir(const char*)’, declared with attribute warn_unused_result [-Wunused-result] if (strlen(cwd)) chdir(cwd); ```

Update dependencies to latest