Webpack/V5/Migrate Library Target To Library Object

Last update

Feb 18, 2025

This codemod migrates the output.library and output.libraryTarget properties in Webpack configurations to the new format required by Webpack 5. It changes output.library to output.library.name and output.libraryTarget to output.library.type.

Example

Before

module.exports = {
  output: {
    library: "MyLibrary",
    libraryTarget: "commonjs2",
  },
};

After

module.exports = {
  output: {
    library: {
      name: "MyLibrary",
      type: "commonjs2",
    },
  },
};

Before

module.exports = {
  output: {
    library: "MyLibrary",
    libraryTarget: "commonjs2",
    filename: "bundle.js",
  },
};

After

module.exports = {
  output: {
    library: {
      name: "MyLibrary",
      type: "commonjs2",
    },

    filename: "bundle.js",
  },
};

Before

module.exports = {
  output: {
    library: "MyLibrary",
  },
};

After

module.exports = {
  output: {
    library: {
      name: "MyLibrary",
      type: undefined,
    },
  },
};

Before

module.exports = {
  output: {
    library: "MyLibrary",
    libraryTarget: "umd",
    path: "./dist",
  },
};

After

module.exports = {
  output: {
    library: {
      name: "MyLibrary",
      type: "umd",
    },

    path: "./dist",
  },
};

Example

Before

module.exports = {
  output: {
    library: "MyLibrary",
    libraryTarget: "commonjs2",
  },
};

After

module.exports = {
  output: {
    library: {
      name: "MyLibrary",
      type: "commonjs2",
    },
  },
};

Before

module.exports = {
  output: {
    library: "MyLibrary",
    libraryTarget: "commonjs2",
    filename: "bundle.js",
  },
};

After

module.exports = {
  output: {
    library: {
      name: "MyLibrary",
      type: "commonjs2",
    },

    filename: "bundle.js",
  },
};

Before

module.exports = {
  output: {
    library: "MyLibrary",
  },
};

After

module.exports = {
  output: {
    library: {
      name: "MyLibrary",
      type: undefined,
    },
  },
};

Before

module.exports = {
  output: {
    library: "MyLibrary",
    libraryTarget: "umd",
    path: "./dist",
  },
};

After

module.exports = {
  output: {
    library: {
      name: "MyLibrary",
      type: "umd",
    },

    path: "./dist",
  },
};

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