Decorators on accessor class fields fail to parse in Bun

[kevgeoleo]

What version of Bun is running?

1.3.11-canary.1+9e93bfa1b

What platform is your computer?

Linux 5.10.0-12-amd64 x86_64 x86_64

What steps can reproduce the bug?

Hi,

The behavior can be reproduced using the below PoC:

// a.ts
function example(target: any, context: any) {}
class Foo {
  @example accessor x = "value";
}

What is the expected behavior?

This is valid TypeScript (TS 5+ accessor field syntax with decorators). It should work without throwing Error

What do you see instead?

root@KContainer:~/22254# bun run a.ts
4 |   @example accessor x = "value";
                        ^
error: Expected ";" but found "x"
    at /home/c01kele/22254/a.ts:4:21

4 |   @example accessor x = "value";
                          ^
error: Expected identifier but found "="
    at /home/c01kele/22254/a.ts:4:23

Bun v1.3.11-canary.1+9e93bfa1b (Linux x64)

Additional information

No response

[github-actions]

Found 3 possible duplicate issues:

1. TypeScript accessor keyword in classes fails to parse #27335
2. Signals Polyfill Typescript Decorator not Working #14529
3. error: Expected identifier but found ":" #17443

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[robobun]

✅ Reproduced — the accessor keyword was gated on Bun's standard_decorators flag, which is off under experimentalDecorators: true. Fix in #29201 (parser accepts the keyword, and the field is desugared to #storage + get/set to match TypeScript's legacy-decorator output and JSC's runtime).