Fix SWC support with stage 3 decorators #2136
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TechQuery
suggested changes
Apr 4, 2025
| dynamicImport: true, | ||
| importAssertions: true, | ||
| } as swcWasm.TsParserConfig, | ||
| target: swcTarget as swcWasm.JscTarget, | ||
| transform: { | ||
| decoratorMetadata: emitDecoratorMetadata, | ||
| legacyDecorator: true, | ||
| legacyDecorator: experimentalDecorators, | ||
| decoratorVersion: experimentalDecorators ? '2021-12' : '2022-03', |
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| decoratorVersion: experimentalDecorators ? '2021-12' : '2022-03', | |
| decoratorVersion: experimentalDecorators ? '2021-12' : '2023-11', |
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Where did you get that 2023-11 from? SWC doesn't have that option: https://swc.rs/docs/configuration/compilation#jsctransformdecoratorversion
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Where did you get that 2023-11 from? SWC doesn't have that option: https://swc.rs/docs/configuration/compilation#jsctransformdecoratorversion
I saw this value in SWC error message & Babel document, maybe it hasn't been implemented.
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Since TypeScript 5.0, stage 3 decorators had become the default while
experimentalDecoratorshad become the legacy standard. However, with SWC enabled, ts-node doesn't work correctly with stage 3 decorators. This PR fixes the config pass to SWC to make it things work as it should.Note: This part of the SWC config has been there since v1.3.47, so there's no need the change the dependency specifications.