Sourced from @​backstage/cli's changelog.

0.34.0

Minor Changes

• 38b4243: Added plugin and module templates for the new frontend system. These templates are not included by default, but can be included by adding @backstage/cli/templates/new-frontend-plugin and @backstage/cli/templates/new-frontend-plugin-module as custom templates.

• 923ceb2: BREAKING: The new app build based on Rspack is now the default, and the EXPERIMENTAL_RSPACK flag has been removed. To revert to the old behavior, set the LEGACY_WEBPACK_BUILD environment flag and install the following optional dependencies:

  {
    "dependencies": {
      "@module-federation/enhanced": "^0.9.0",
      "@pmmmwh/react-refresh-webpack-plugin": "^0.5.7",
      "esbuild-loader": "^4.0.0",
      "eslint-webpack-plugin": "^4.2.0",
      "fork-ts-checker-webpack-plugin": "^9.0.0",
      "mini-css-extract-plugin": "^2.4.2",
      "terser-webpack-plugin": "^5.1.3",
      "webpack": "^5.96.0",
      "webpack-dev-server": "^5.0.0"
    }
  }

  If you do encounter a blocking issue that forces you to use the old WebPack build, please open an issue explaining the problem. The WebPack build will be removed in a future release.

• eda80c7: BREAKING: Removed support for .icon.svg imports, which have been deprecated since the 1.19 release.

Patch Changes

• 2b8082a: Internal refactor of error handling
• 8b1bf6e: Deprecated new frontend system config setting app.experimental.packages to just app.packages. The old config will continue working for the time being, but may be removed in a future release.
• ead626f: The Node.js transform in @backstage/cli/config/nodeTransformHooks.mjs now supports the built-in type stripping in Node.js, which is enabled by default from v22.18.0.
• a6af768: Allow js files to be processed by the nodeTransform loader
• Updated dependencies
  • @​backstage/cli-node@​0.2.14

0.34.0-next.2

Minor Changes

• 923ceb2: BREAKING: The new app build based on Rspack is now the default, and the EXPERIMENTAL_RSPACK flag has been removed. To revert to the old behavior, set the LEGACY_WEBPACK_BUILD environment flag and install the following optional dependencies:

  {
    "dependencies": {
      "@module-federation/enhanced": "^0.9.0",
      "@pmmmwh/react-refresh-webpack-plugin": "^0.5.7",
      "esbuild-loader": "^4.0.0",
      "eslint-webpack-plugin": "^4.2.0",
      "fork-ts-checker-webpack-plugin": "^9.0.0",

... (truncated)

• 5a64fe7 Version Packages
• 9cec983 Merge pull request #6153 from backstage/dependabot/npm_and_yarn/rollup/plugin...
• 0ec31e5 chore(deps): bump @​rollup/plugin-node-resolve from 11.2.1 to 13.0.0
• 0a09dbe chore: fix dependencies in create-app
• afa37a8 Merge branch 'master' into rugvip/mod
• 9258c54 Merge branch 'master' into rugvip/mod
• 985ebdf chore(deps-dev): bump del from 5.1.0 to 6.0.0
• f87c302 Merge pull request #6126 from backstage/dependabot/npm_and_yarn/typescript-es...
• 4045eaa Merge pull request #6119 from backstage/freben/copyright
• e7b1292 chore(deps): bump @​typescript-eslint/eslint-plugin from 4.26.0 to 4.27.0
• Additional commits viewable in compare view

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