Run jslint on the command line fast (with v8 engine)

jslint-v8 is a modern and extreamly fast runner for the popular jslint JavaScript style checker. jslint is implemented by the JavaScript guru Douglas Crockford in JavaScript itself.

Credits

• this work was inspired by jsbeautify implementation.
• original jslint-v8 implementation by jlbfalcao
• vim support and Rakefile by Vladimir Dobriakov AKA geekQ

Build

Download and compile v8 JavaScript engine according official manual as shared library. On my 64bit Ubuntu Linux I have used:

scons library=shared arch=x64

Copy the v8 shared library to /usr/lib or whatever place is appropriate for your OS:

sudo cp libv8.so /usr/lib

Compile jslint-v8

V8_BASEDIR=/your/path/to/v8-trunk rake compile

If you do not have ruby/rake you can run g++ directly, please look inside Rakefile.

Run on console

jslint --browser file.js

checks the style for file.js. You can provide all the known jslint switches on the command line. Here --browser indicates that e.g. XMLHttpRequest object should be allowed.

Run from vim

Set up jslint as make program in .vimrc:

autocmd BufRead,BufNewFile *.js,*.json setlocal makeprg=jslint\ --vim\ \%

--vim provides error message formatting suitable for parsing in vim.

Now you can check your JavaScript easily with :make or even automatically on every file save or load.

See a screenshot for usage inside vim.