Migrate from Terser and Babel to SWC #6920
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Any change to sizes? |
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Also is there a difference in ECMA compliance, if there is a difference between ES5 versio s, and what it results in? |
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It has the same targets for both UMD and ES builds, so should match current
outputs.
I need to adjust some settings to get the build size back in line though,
so consider this draft for now.
…On Fri, 6 Sep 2024 at 18:15, mrmaxm ***@***.***> wrote:
Also is there a difference in ECMA compliance, if there is a difference
between ES5 versio s, and what it results in?
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If it is not possible to bring the build size to what terser is capable of, then we can consider to use this for a debug build, as it is usually the one that takes the most of the time during development and its size is of less importance. |
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Below are the file sizes. Will continue investigating
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The wins from this look extremely compelling. I'd be supportive of switching. |
- Added "peer": true to several existing dependencies to indicate peer dependencies. - Introduced new modules: jackspeak (v3.4.3) and package-json-from-dist (v1.0.1) with their respective details. - Added path-scurry (v1.11.1) and its dependency lru-cache (v10.4.3) with funding information. These changes enhance dependency management and ensure compatibility with peer dependencies.
- Eliminated the babel-parser dependency from the ESLint configuration file. - Updated the parser options to ensure compatibility with the existing setup. These changes streamline the ESLint configuration and reduce unnecessary dependencies.
- Changed the import name of the SWC plugin from 'swc' to 'swcPlugin' for clarity. - Updated all instances in the buildTarget function to use the new import name. These changes improve code readability and maintainability.
- Removed several unused Babel-related dependencies from package.json and package-lock.json to streamline the project. - Updated the package-lock.json to reflect the removal of these dependencies and added optional flags where applicable. - Enhanced dependency management by ensuring that only necessary modules are retained, improving overall project maintainability.
… rollup-spaces-to-tabs.mjs - Deleted the rollup-script-target.mjs file, streamlining the build process. - Updated swcOptions to ensure comments are preserved in the output when not minifying. - Clarified documentation in rollup-spaces-to-tabs.mjs regarding the plugin's functionality. These changes enhance code maintainability and improve the clarity of the build configuration.
…s for Rollup. See vitejs/vite#15532 - Added optional dependencies for various Rollup packages, including support for multiple platforms (Linux, Darwin, FreeBSD, Windows). - Updated package-lock.json to reflect the addition of these optional dependencies and their respective versions. - This change enhances cross-platform compatibility and ensures that the build process can leverage the appropriate Rollup binaries as needed.
…lated dependencies - Upgraded @swc/core to version 1.10.1 and updated its dependencies across various platforms. - Removed the optional dependency for @rollup/rollup-linux-x64-gnu. - Updated @swc/types to version 0.1.17 for improved compatibility. - These changes enhance the project's build capabilities and ensure better support for the latest SWC features.
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Comparison of Existing Build System vs SWC
Observations
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willeastcott
changed the title
- Removed the parserOptions.requireConfigFile setting from the ESLint configuration.
…, and include several new devDependencies - Removed the deprecated @napi-rs/canvas dependency from package.json and package-lock.json. - Added canvas version 3.0.1 to both files. - Introduced multiple new development dependencies, enhancing the project's capabilities and ensuring compatibility with the latest features.
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I've stumbled upon this ticket at rollup: It seems they use SWC since version 4.x. Which means, we are already using it indirectly. Is the speedup coming from dropping Babel+Terser? |
This is just for internally parsing the AST in Rollup. It still relies on external plugins such as @rollup/plugin-babel for transpiling/lowering/minifying the final output. Previously we were using terser for minifying and babel for transpiling which are both JS implementations. SWC is Rust, so it's a lot faster and handles both transpiling and minifying. |
kpal81xd
approved these changes
Jan 9, 2025
willeastcott
reviewed
Jan 9, 2025
willeastcott
approved these changes
Jan 9, 2025
- Upgraded the @swc/core dependency from version 1.10.1 to 1.10.4 in both package.json and package-lock.json to ensure compatibility with the latest features and improvements.
- Eliminated the skipLibCheck option from the TypeScript configuration to enforce stricter type checking and improve code quality.
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This PR replaces Babel + Terser with SWC which improves the build time of each target.
The same ES5 targets are used for UMD build outputs.
With Terser/Babel ~ 1m40s
With SWC ~ 51s
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