feat: Pass module: "unknown"
to SWC minfiier (#66817)
### What? Pass `module: "unknown"` to the minifier. ### Why? It can minify both a module and a script. `module: "unknown"` lets the parser to detect the type of the program. The problematic library is `react-pdf` and next.js currently errors with ``` Failed to compile. static/media/pdf.worker.1f09ce21.mjs from Terser x 'import', and 'export' cannot be used outside of module code ,-[56104:1] 56104 | const pdfjsBuild = "0cec64437"; 56105 | 56106 | var __webpack_exports__WorkerMessageHandler = __webpack_exports__.WorkerMessageHandler; 56107 | export { __webpack_exports__WorkerMessageHandler as WorkerMessageHandler }; : ^^^^^^ 56108 | 56109 | //# sourceMappingURL=pdf.worker.mjs.map `---- Caused by: 0: failed to parse input file 1: Syntax Error Error: x 'import', and 'export' cannot be used outside of module code ,-[56104:1] ``` ### How? Related: https://github.com/vercel/next.js/discussions/30237#discussioncomment-9735075
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@ -146,6 +146,7 @@ export class TerserPlugin {
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: {}),
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: {}),
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compress: true,
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compress: true,
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mangle: true,
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mangle: true,
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module: 'unknown',
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}
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}
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)
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)
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