Decorators support

[huseeiin]

Describe the feature

ERROR: Transforming JavaScript decorators to the configured target environment ("es2020") is not supported yet

tsconfig.json:

{
	"compilerOptions": {
		"lib": ["ESNext", "DOM"],
		"target": "ESNext",
		"module": "ESNext",
		"strict": true,
		"exactOptionalPropertyTypes": true,
		"noUncheckedIndexedAccess": true,
		"esModuleInterop": true,
		"moduleResolution": "node",
		"noEmit": true,
		"skipLibCheck": true,
		"experimentalDecorators": true,
		"strictPropertyInitialization": false,
		"emitDecoratorMetadata": true
	}
}

Additional information

• Would you be willing to help implement this feature?

[colmugx]

same..

[sadeghbarati]

Hi, I don't know it's related but have you guys add tslib to dependencies? what is your typescript version?

[colmugx]

but it works in 1.2.1

[OSpoon]

I also tried to build the module that used decoration and got the same error as above

[hengshanMWC]

The same mistake, do you want to use babel to transfer the insurance first

[zhangjiluo-com]

same mistake

[zsilbi]

Workaround:

Create a build.config.ts with the following:

import { defineBuildConfig } from 'unbuild';

export default defineBuildConfig({
  rollup: {
    esbuild: {
      tsconfigRaw: {
        compilerOptions: {
          experimentalDecorators: true,
        },
      },
    },
  },
});

or add the following section to the package.json:

"unbuild": {
  "rollup": {
    "esbuild": {
      "tsconfigRaw": {
        "compilerOptions": {
          "experimentalDecorators": true
        }
      }
    }
  }
}