Note: Closure Linter is deprecated, and is rarely used anymore within Google. See this page for more information
This document describes how to install and use Closure Linter.
Install Closure Linter
Use the Python
pip utility to download and
install Closure Linter.
To install Closure Linter on Linux, execute the following commands:
$ sudo apt-get install python-pip $ sudo pip install https://github.com/google/closure-linter/zipball/master
Mac OS X
To install Closure Linter on Mac OS X, execute the following command:
$ sudo easy_install pip $ sudo pip install https://github.com/google/closure-linter/zipball/master
To install Closure Linter on Windows:
- Download and install Python for Windows.
- Execute the following command:
> pip install https://github.com/google/closure-linter/zipball/master
Note: Windows support for Closure Linter is experimental.
Find Style Problems
To run the Closure Linter on a single file, try:
$ gjslint path/to/my/file.js
You should see results like this:
Line 46, E:0110: Line too long (87 characters). Line 54, E:0214: Missing description in @return tag Line 66, E:0012: Illegal semicolon after function declaration Line 150, E:0120: Binary operator should go on previous line "+" Line 175, E:0011: Missing semicolon after function assigned to a variable Line 210, E:0121: Illegal comma at end of array literal Line 220, E:0002: Missing space before ":"
You can also recursively check an entire directory, like this:
$ gjslint -r path/to/my/directory
By default, the Closure Linter checks for the presence of correct JsDoc annotations. If you don't want to check for missing JsDoc annotations in your project, disable the check like this:
$ gjslint --nojsdoc -r path/to/my/directory
Although this flag disables checks for missing JsDoc annotations, the linter still verifies that existing JsDoc annotations are used correctly.
The --strict Flag
If you want Closure Linter to be more strict about style rules like
spacing, JsDoc types, and author tags, use the
command line flag. You must use
--strict if you are contributing
code to the Closure
Fix Style Problems
In any of the above commands, you can substitute
gjslint to automatically fix many of the errors
gjslint checks for.
$ fixjsstyle path/to/file1.js path/to/file2.js
You should back up your files or store them in a source control
system before using
fixjsstyle, in case the script makes
changes that you don't want.