Laravel-mix: Minification failures after 1.0.0 upgrade

[Cheddam]

• Laravel Mix Version: 1.0.0
• Node Version: v8.0.0
• Yarn Version: 0.24.6
• OS: macOS 10.12.5

Description:

After upgrading to Laravel Mix 1.0.0, I can no longer run a production build, as the minification fails citing an inability to find the file it's trying to minify:

Whoops! We had trouble minifying "/themes/_shared/dist/enrolment.js". Perhaps you need to use mix.babel() instead?
/Users/gherman/Sites/whitireia/node_modules/laravel-mix/src/plugins/CustomTasksPlugin.js:67
                throw e;
                ^

Error: ENOENT: no such file or directory, open '/themes/_shared/dist/enrolment.js'
    at Object.fs.openSync (fs.js:638:18)
    at Object.fs.readFileSync (fs.js:540:33)
    at addFile (/Users/gherman/Sites/whitireia/node_modules/uglify-js/tools/node.js:85:22)
    at /Users/gherman/Sites/whitireia/node_modules/uglify-js/tools/node.js:104:17
    at Array.forEach (native)
    at Object.UglifyJS.minify (/Users/gherman/Sites/whitireia/node_modules/uglify-js/tools/node.js:102:26)
    at File.minify (/Users/gherman/Sites/whitireia/node_modules/laravel-mix/src/File.js:221:31)
    at manifest.forEach.asset (/Users/gherman/Sites/whitireia/node_modules/laravel-mix/src/plugins/CustomTasksPlugin.js:60:23)
    at Array.forEach (native)
    at CustomTasksPlugin.minifyAssets (/Users/gherman/Sites/whitireia/node_modules/laravel-mix/src/plugins/CustomTasksPlugin.js:56:18)
    at Compiler.compiler.plugin.stats (/Users/gherman/Sites/whitireia/node_modules/laravel-mix/src/plugins/CustomTasksPlugin.js:16:22)
    at Compiler.applyPlugins (/Users/gherman/Sites/whitireia/node_modules/tapable/lib/Tapable.js:61:14)
    at /Users/gherman/Sites/whitireia/node_modules/webpack/lib/Compiler.js:273:13
    at Compiler.emitRecords (/Users/gherman/Sites/whitireia/node_modules/webpack/lib/Compiler.js:369:37)
    at /Users/gherman/Sites/whitireia/node_modules/webpack/lib/Compiler.js:267:12
    at /Users/gherman/Sites/whitireia/node_modules/webpack/lib/Compiler.js:362:11
    at next (/Users/gherman/Sites/whitireia/node_modules/tapable/lib/Tapable.js:154:11)
    at Compiler.compiler.plugin (/Users/gherman/Sites/whitireia/node_modules/webpack/lib/performance/SizeLimitsPlugin.js:99:4)
    at Compiler.applyPluginsAsyncSeries1 (/Users/gherman/Sites/whitireia/node_modules/tapable/lib/Tapable.js:158:13)
    at Compiler.afterEmit (/Users/gherman/Sites/whitireia/node_modules/webpack/lib/Compiler.js:359:8)
    at Compiler.<anonymous> (/Users/gherman/Sites/whitireia/node_modules/webpack/lib/Compiler.js:354:14)
    at /Users/gherman/Sites/whitireia/node_modules/async/dist/async.js:421:16
    at iteratorCallback (/Users/gherman/Sites/whitireia/node_modules/async/dist/async.js:998:13)
    at /Users/gherman/Sites/whitireia/node_modules/async/dist/async.js:906:16
    at /Users/gherman/Sites/whitireia/node_modules/graceful-fs/graceful-fs.js:43:10
    at FSReqWrap.oncomplete (fs.js:135:15)

The file it references is being compiled and stored at that path successfully, so my suspicion is that the minifier's path wrangling is a little off.

Steps To Reproduce:

I have cross-env and webpack added as direct dependencies of the project, and my production build command looks like this:

node_modules/cross-env/dist/bin/cross-env.js NODE_ENV=production node_modules/.bin/webpack --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js

My webpack.mix.js config:

const mix = require('laravel-mix');

mix
  .js('themes/_shared/src/js/enrolment/enrolment.js', 'themes/_shared/dist/');

mix.options({
  processCssUrls: false,
});

if (!mix.inProduction()) {
  // linting
  mix.webpackConfig({
    module: {
      rules: [
        {
          test: /\.(js|vue)$/,
          exclude: /node_modules/,
          loader: 'eslint-loader',
        },
      ],
    },
  });

  mix.sourceMaps();
}

enrolment.js pulls in a number of its own dependencies (Vue components, etc.) but I don't believe the source code is related to this issue, as I've tried a completely fresh project with the same paths but an empty source file and I get the same error.

Let me know if there's any additional info that would be useful.

[JeffreyWay]

@Cheddam Thanks for the useful description. I think I've found the issue. Can you upgrade to Mix 1.0.2 and let me know if you're still hitting this snag?

[bbashy]

I'll also try this later. Was having the same issue with combined scripts.

[JeffreyWay]

@bbashy - It'll still do manual minification for combining scripts. If you're getting an error, make sure that the files aren't using ES2015+ syntax. If they are, you'll need to use mix.babel() instead to compile everything first.

[bbashy]

@JeffreyWay Oh OK, makes sense. The scripts are just plain JS though (I believe). Will check.

Edit: All fine, had some backticks that I added recently so changed it to .babel()

[Cheddam]

@JeffreyWay Fixed! Thanks for the speedy turnaround, and also just for building Mix in the first place 🥇