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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| { | ||
| "name": "@parcel/optimizer-swc", | ||
| "version": "2.0.0", | ||
| "license": "MIT", | ||
| "publishConfig": { | ||
| "access": "public" | ||
| }, | ||
| "funding": { | ||
| "type": "opencollective", | ||
| "url": "https://opencollective.com/parcel" | ||
| }, | ||
| "repository": { | ||
| "type": "git", | ||
| "url": "https://github.com/parcel-bundler/parcel.git" | ||
| }, | ||
| "main": "lib/SwcOptimizer.js", | ||
| "source": "src/SwcOptimizer.js", | ||
| "engines": { | ||
| "node": ">= 12.0.0", | ||
| "parcel": "^2.0.0" | ||
| }, | ||
| "dependencies": { | ||
| "@parcel/plugin": "^2.0.0", | ||
| "@parcel/source-map": "^2.0.0", | ||
| "@parcel/utils": "^2.0.0", | ||
| "@swc/core": "^1.2.106", | ||
| "nullthrows": "^1.1.1" | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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| // @flow | ||
|
|
||
| import nullthrows from 'nullthrows'; | ||
| import {minify} from '@swc/core'; | ||
| import {Optimizer} from '@parcel/plugin'; | ||
| import {blobToString} from '@parcel/utils'; | ||
| import SourceMap from '@parcel/source-map'; | ||
|
|
||
| import path from 'path'; | ||
|
|
||
| export default (new Optimizer({ | ||
| async loadConfig({config, options}) { | ||
| let userConfig = await config.getConfigFrom( | ||
| path.join(options.projectRoot, 'index'), | ||
| ['.terserrc', '.terserrc.js'], | ||
| ); | ||
|
|
||
| if (userConfig) { | ||
| let isJavascript = path.extname(userConfig.filePath) === '.js'; | ||
| if (isJavascript) { | ||
| config.invalidateOnStartup(); | ||
| } | ||
| } | ||
|
|
||
| return userConfig?.contents; | ||
| }, | ||
| async optimize({ | ||
| contents, | ||
| map: originalMap, | ||
| bundle, | ||
| config: userConfig, | ||
| options, | ||
| getSourceMapReference, | ||
| }) { | ||
| if (!bundle.env.shouldOptimize) { | ||
| return {contents, map: originalMap}; | ||
| } | ||
|
|
||
| let code = await blobToString(contents); | ||
| let config = { | ||
| mangle: true, | ||
| compress: true, | ||
| ...userConfig, | ||
| sourceMap: bundle.env.sourceMap | ||
| ? { | ||
| filename: path.relative( | ||
| options.projectRoot, | ||
| path.join(bundle.target.distDir, bundle.name), | ||
| ), | ||
| } | ||
| : false, | ||
| toplevel: | ||
| bundle.env.outputFormat === 'esmodule' || | ||
| bundle.env.outputFormat === 'commonjs', | ||
| module: bundle.env.outputFormat === 'esmodule', | ||
| }; | ||
|
|
||
| let result = await minify(code, config); | ||
|
|
||
| let sourceMap = null; | ||
| let minifiedContents: string = nullthrows(result.code); | ||
| let resultMap = result.map; | ||
| if (resultMap) { | ||
| sourceMap = new SourceMap(options.projectRoot); | ||
| sourceMap.addVLQMap(JSON.parse(resultMap)); | ||
| if (originalMap) { | ||
| sourceMap.extends(originalMap); | ||
| } | ||
| let sourcemapReference = await getSourceMapReference(sourceMap); | ||
| if (sourcemapReference) { | ||
| minifiedContents += `\n//# sourceMappingURL=${sourcemapReference}\n`; | ||
| } | ||
| } | ||
|
|
||
| return {contents: minifiedContents, map: sourceMap}; | ||
| }, | ||
| }): Optimizer); |
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