Trim trailing spaces from each line of the selected files

npm install grunt-trimtrailingspaces
1 downloads in the last day
9 downloads in the last week
104 downloads in the last month


Trim trailing spaces from each line of the selected files

Build Status Code Climate Dependency Status Bitdeli Badge Built with Grunt

Getting Started

Add this to your project's Gruntfile.js gruntfile:


Then add "grunt-trimtrailingspaces" to your package.json dependencies. This can be done with:

npm install grunt-trimtrailingspaces --save-dev

Or by manually editing the "package.json" by adding the following line inside devDependencies object:

  "grunt-trimtrailingspaces": "~0.4.0"

Later on it would be possible to install the plugin with the command npm install

It can be updated with the command npm update, in case there is a newer version in the NPM repository.

The name to use in your own task definitions is trimtrailingspaces.


Add an entry to your "Gruntfile.js", within the initConfig object, which will define the files of which will the trailing spaces to be removed.

By using the src property for selecting files to be processed, they are replaced by the ones processed.

By setting the failIfTrimmed option to true, the grunt task will fail after trimming all files if any whitespace was removed. This is very useful for running trimtrailingspaces as a pre-commit task (in combination with grunt-githooks), because it will prevent the commit from going through which would not include the trimmimg changes.

The examples below are using the built-in custom filter property.


  trimtrailingspaces: {
    main: {
      src: ['public_html/js/**/*.js'],
      options: {
        filter: 'isFile',
        encoding: 'utf8',
        failIfTrimmed: false


It is possible to save the processed files to a different location by using the files property, as shown below. The destination (key) should be a directory path in which the src files (array value) are stored. No trailing slash needed.

Please note that this method will create a flat directory of the result.


  trimtrailingspaces: {
    main: {
      files: {
        'public_html/js/trimmed': ['public_html/js/**/*.js']
      filter: 'isFile',
      encoding: 'utf8'


For further information on how files are matched, please see the documentation of the minimatch package, as it is used underneath Grunt.

To run it:

grunt trimtrailingspaces


In lieu of a formal styleguide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code using Grunt.


  • 2013-12-20 v0.4.0 Fail if trimmed option and use case added
  • 2013-11-07 v0.3.2 Documentation for filter in examples
  • 2013-08-28 v0.3.1 Dependency update to Node.js 0.10 from 0.8
  • 2013-07-31 v0.3.0 Added tests and made it possible to save processed files to other location
  • 2013-07-25 v0.2.1 Removed string.js dependency and use grunt.file API
  • 2013-07-11 v0.2.0 Support for Grunt src files array
  • 2013-07-05 v0.1.0 Initial release


Copyright (c) 2013 Juga Paazmaya

Licensed under the MIT license.

npm loves you