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ES decorators bug with inheritance and --bundle #3768

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markandrus opened this issue May 15, 2024 · 0 comments
Closed

ES decorators bug with inheritance and --bundle #3768

markandrus opened this issue May 15, 2024 · 0 comments

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@markandrus
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With esbuild 0.21.2, given the following file

// test.ts
class Foo {}

const bar = x => x

class Baz extends Foo {
  @bar
  baz() { return Baz }
}

console.log(new Baz().baz())

transforming without the --bundle flag works:

$ esbuild --target=es2022 test.ts >test.js
$ node test.js
[Function: Baz]

Specifying the --bundle flag fails:

$ esbuild --bundle --target=es2022 test.ts >test.js
$ node test.js
/private/tmp/decorator-issue/test.js:60
  __decorateElement(_init, 1, "baz", _baz_dec, _Baz);
                                               ^

ReferenceError: _Baz is not defined
    at /private/tmp/decorator-issue/test.js:60:48
    at Object.<anonymous> (/private/tmp/decorator-issue/test.js:62:3)
    at Module._compile (node:internal/modules/cjs/loader:1369:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1427:10)
    at Module.load (node:internal/modules/cjs/loader:1206:32)
    at Module._load (node:internal/modules/cjs/loader:1022:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:135:12)
    at node:internal/main/run_main_module:28:49

Node.js v20.12.2

Here is a repro on esbuild.github.io/try.

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