Home/ Questions/Q 9317195
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-19T02:48:53+00:00

grunt-contrib-watch plugin provides nice auto-build feature but in some occasions does not display warning

  • 0

grunt-contrib-watch plugin provides nice auto-build feature but in some occasions does not display warning message from tasks, here is my grunt.js:

    min: {
        app: {
            src: [
                'some.js',
            ],
            dest: 'some.min.js'
        },
    }

    watch: {
        app: {
            files: 'some.js',
            tasks: ['min:app']
        },
    }

if source is fine, that everything goes smoothly; however when UglifyJS aborts:

run grunt min:app directly

Running "min:app" (min) task
Minifying with UglifyJS...ERROR
[L360:C46] Unexpected token name, expected punc (position: 8529)
<WARN> UglifyJS found errors. Use --force to continue. </WARN>

Aborted due to warnings.

auto-build via watch plugin

Waiting...OK
>> File "some.js" changed.
Running "min:app" (min) task

so there is no way to know if build is successful without looking at output itself.

similar setup with css less does display error to CLI, I am wondering if there is something I need to pass to grunt/watch plugin/uglify to makes it work?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Looks like Grunt v0.3.x + grunt-contrib-watch v0.1.4 is indeed the problem…

    https://github.com/gruntjs/grunt-contrib-watch/issues/19

    https://github.com/gruntjs/grunt-contrib-watch/issues/7

    (EDIT: after upgrading to Grunt v0.4.x + grunt-contrib-watch v0.2.x, issue is resolved; though I should note this is a breaking upgrade, most v0.3 plugins are not converted to support Grunt v0.4 yet)

    I closed my ticket on their repo as well, for reference: https://github.com/gruntjs/grunt-contrib-watch/issues/51

    • 0