What version of Bun is running?

1.1.31

What platform is your computer?

Darwin 22.3.0 arm64 arm

What steps can reproduce the bug?

With the following files:

// enum.ts
export const enum Foo {
  foo = -1,
  bar = 1,
}

// index.ts
import { Foo } from './enum';

export const FooRecord = {
  [Foo.foo]: 'foo',
  [Foo.bar]: 'bar',
}

// build.ts
await Bun.build({ entrypoints: ['index.ts'], minify: true, outdir: '.' });

Run

bun run build.ts

What is the expected behavior?

The output should be:

var a={[-1]:"foo",[1]:"bar"};export{a as FooRecord};

What do you see instead?

The output is:

var a={-1:"foo",1:"bar"};export{a as FooRecord};

Which produces syntax errors due to the unwrapped -1 property key.

Additional information

It is important to note that this does not happen for either of the following conditions:

• The build is not minified
• The enum is in the same file as the object

The same issue exists in v1.1.30, so it doesn't appear to be a regression.