Copy-webpack-plugin: Updating to V6 breaks development build

[daviddelusenet]

I was using version 5.1.1 but this morning I decided to update to 6.0.1.

I changed my configuration from:

new CopyWebpackPlugin([
    {
        from: publicPath,
        ignore: process.env.NODE_ENV !== 'dev' ? ['config.json'] : [''],
        to: distPath,
    },
]),

to

new CopyWebpackPlugin({
    patterns: [
        {
            from: publicPath,
            globOptions: {
                ignore: process.env.NODE_ENV !== 'dev' ? ['config.json'] : [''],
            },
            to: distPath,
        },
    ],
}),

But now I'm getting the following errors:

 ERROR in unable to locate '/Users/lusenet/Development/com.sportlink.club.web/public' at '/Users/lusenet/Development/com.sportlink.club.web/public/**/*'

This only happens when I try to run my project in development mode using the webpack-dev-server. Making a distribution build still works fine.

Let me know if you need any more information.

[cap-Bernardito]

Please provide the information indicated in the template issue

• Operating System:
• Node Version:
• NPM Version:
• webpack Version:
• copy-webpack-plugin Version:

Expected Behavior

Actual Behavior

How Do We Reproduce?

Minimally reproducible repository with a problem

[daviddelusenet]

Operating System: macOS Catalina
Node Version: 10.16.0
NPM Version: 6.14.4
webpack Version: 4.43.0
copy-webpack-plugin Version: 6.0.1

Expected Behavior

That it works.

Actual Behavior

It doesn't work.

[cap-Bernardito]

You should use [] for ignore option as the default value.
https://github.com/mrmlnc/fast-glob#ignore

new CopyWebpackPlugin({
    patterns: [
        {
            from: publicPath,
            globOptions: {
                ignore: process.env.NODE_ENV !== 'dev' ? ['config.json'] : [],
            },
            to: distPath,
        },
    ],
}),

[daviddelusenet]

That indeed was the problem, thanks @cap-Bernardito ! :)

[cap-Bernardito]

You are welcome ))

[maksnester]

I have exactly the same issue. My 5.1.1 config is

    new CopyWebpackPlugin([
      { from: path.join('node_modules/foo', '**/*.wasm'), to: '.', flatten: true }
    ])

For 6.0.1

    new CopyWebpackPlugin({
      patterns: [
        {
          from: path.resolve(__dirname, 'node_modules/foo', '**/*.wasm'),
          to: '.',
          flatten: true,
        },
      ],
    })

Operating System: windows 10
Node Version: 10.20.1
NPM Version: 6.14.4
webpack Version: 4.42.0 (react-scripts)
copy-webpack-plugin Version: 6.0.1

Failed to compile.

  Error: Child compilation failed:
  unable to locate 'C:\Users\Max\Desktop\console\node_modules\foo\**\*.wasm' at 'C:\Users\Max\Desktop\console\node_modules\foo\**\*.wasm'

  - compiler.js:141 childCompiler.runAsChild
    [console]/[html-webpack-plugin]/lib/compiler.js:141:18

  - Compiler.js:343 compile
    [console]/[webpack]/lib/Compiler.js:343:11

  - Compiler.js:681 hooks.afterCompile.callAsync.err
    [console]/[webpack]/lib/Compiler.js:681:15

  - Hook.js:154 AsyncSeriesHook.lazyCompileHook
    [console]/[tapable]/lib/Hook.js:154:20

  - Compiler.js:678 compilation.seal.err
    [console]/[webpack]/lib/Compiler.js:678:31

  - Hook.js:154 AsyncSeriesHook.lazyCompileHook
    [console]/[tapable]/lib/Hook.js:154:20

  - Compilation.js:1423 hooks.optimizeAssets.callAsync.err
    [console]/[webpack]/lib/Compilation.js:1423:35

  - Hook.js:154 AsyncSeriesHook.lazyCompileHook
    [console]/[tapable]/lib/Hook.js:154:20

  - Compilation.js:1414 hooks.optimizeChunkAssets.callAsync.err
    [console]/[webpack]/lib/Compilation.js:1414:32

  - Hook.js:154 AsyncSeriesHook.lazyCompileHook
    [console]/[tapable]/lib/Hook.js:154:20

  - Compilation.js:1409 hooks.additionalAssets.callAsync.err
    [console]/[webpack]/lib/Compilation.js:1409:36

[alexander-akait]

@daviddelusenet From readme:

// If absolute path is a `glob` we replace backslashes with forward slashes, because only forward slashes can be used in the `glob`
path.posix.join(
  path.resolve(__dirname, 'src').replace(/\\/g, '/'),
  '*.txt'
),

[maksnester]

It also doesn't work with a relative path instead of absolute. Like

from: path.join('node_modules/foo', '**/*.wasm'),

output from path.join has those \\ and they are replaced in that case too.

But yes, I missed it in the readme, thank you @evilebottnawi it works