Style Loader Versions Save

4.0.0 (2024-04-08)

⚠ BREAKING CHANGES

• minimum supported webpack version is 5.27.0
• minimum support Node.js version is 18.12.0
• the insert option can only be a selector or the path to the module

Migration:

Before:

webpack.config.js

module.exports = {
  module: {
    rules: [
      {
        test: /\.css$/i,
        use: [
          {
            loader: "style-loader",
            options: {
              injectType: "styleTag",
              styleTagTransform: function (css, style) {
                // Do something ...
                style.innerHTML = `${css}.modify{}\n`;

                document.head.appendChild(style);
              },
            },
          },
          "css-loader",
        ],
      },
    ],
  },
};

After:

insert-function.js

function insert(css, style) {
  var parent = options.target || document.head;

  parent.appendChild(element);
}

module.exports = insert;

webpack.config.js

module.exports = {
  module: {
    rules: [
      {
        test: /\.css$/i,
        use: [
          {
            loader: "style-loader",
            options: {
              insert: require.resolve("./insert.js"),
            },
          },
          "css-loader",
        ],
      },
    ],
  },
};

• the styleTagTransform option can only be the path to the module

Migration:

Before:

webpack.config.js

module.exports = {
  module: {
    rules: [
      {
        test: /\.css$/i,
        use: [
          {
            loader: "style-loader",
            options: {
              injectType: "styleTag",
              styleTagTransform: function (css, style) {
                // Do something ...
                style.innerHTML = `${css}.modify{}\n`;

                document.head.appendChild(style);
              },
            },
          },
          "css-loader",
        ],
      },
    ],
  },
};

After:

style-tag-transform-function.js

function styleTagTransform(css, style) {
  // Do something ...
  style.innerHTML = `${css}.modify{}\n`;

  document.head.appendChild(style);
}

module.exports = styleTagTransform;

webpack.config.js

module.exports = {
  module: {
    rules: [
      {
        test: /\.css$/i,
        use: [
          {
            loader: "style-loader",
            options: {
              styleTagTransform: require.resolve("./style-tag-transform-function.js"),
            },
          },
          "css-loader",
        ],
      },
    ],
  },
};

Bug Fixes

• css experiments logic (#617) (8b9fc97)

3.3.4 (2024-01-09)

Bug Fixes

• css experiments logic (c12e70b)

3.3.3 (2023-05-19)

Bug Fixes

• compatibility with built-in CSS support (#605) (9636f58)

3.3.2 (2023-03-13)

Bug Fixes

• noop in environment without DOM API (#597) (03d3df3)

3.3.1 (2021-10-21)

Bug Fixes

• small perf improvement (#544) (610524e)

3.3.0 (2021-09-21)

Features

• added support for supports(), layer() and media from @import at-rules (b9a600c)
• allow to pass options to insert function through style.use() (#535) (f8ef63b)

3.2.1 (2021-07-20)

Bug Fixes

• added the styletagtransform option when it is a module to addBuildDependency (#528) (270513f)

3.2.0 (2021-07-20)

Features

• add link field in schema (#525) (7ed3456)

Bug Fixes

• added the insert option when it is a module to addBuildDependency (#527) (3963c0b)

3.1.0 (2021-07-12)

Features

• allow to specify the insert option from file, we strongly recommend do it, using the insert option from file will reduce your bundle size, example (#521) (56fc8f0)
• allow to specify the styleTagTransform option from file, we strongly recommend do it, using the styleTagTransform option from file will reduce your bundle size, example

Bug Fixes

• reduce runtime (#519) (8a26186)
• reduce runtime when you use custom options (#520) (21c80c8)

3.0.0 (2021-06-24)

⚠ BREAKING CHANGES

• minimum supported Node.js version is 12.13.0
• minimum supported webpack version is 5.0.0
• the modules.namedExport option was removed, you don't need it anymore, because we respect the modules.namedExport option from css-loader (we just reexport all from css-loader), just remove it
• the styleTag value of the injectType (default value) option earlier uses singleton style tag by default for IE8-IE9 due limitations (more information), in this release we have disabled this behavior, because these versions of IE are outdated, if you don't support these browsers this change does not affect you, if you require to support IE8-IE9, you can return old behaviour by setting autoStyleTag value for the injectType option (do the same for lazyStyleTag, i.e. change it to lazyAutoStyleTag)

Features

• added autoStyleTag and lazyAutoStyleTag values for the injectType option for compatibility of work modern and IE8-IE9 browsers
• added styleTagTransform option for custom processing style tags (useful if you need ponyfill CSS custom properties for IE8-IE10)
• reduce size of generated code
• reduce deps