Publish dual CJS and ESM version of react-error-overlay

[ovidiuch]

Discussion started here: react-cosmos/react-cosmos#484 (comment)

@Timer's comment on this

We can dual publish a CJS and ESM version (based on package.json toggle). Can you open an issue on CRA for this please?

I've never done this before, but I think this means defining two different entry points in package.json:

• main pointing to CJS
• module pointing to ESM

Correct me if I'm wrong.

Let me know if you have any other pointers for how to structure the build script and if you think it's feasible for a first time contributor to CRA I'm happy to give it a shot!

[Timer]

@skidding hi!

You are correct, essentially we need a CJS version pointed to by main and a ESM version pointed to by module.

You can find the build.js script inside the react-error-overlay package and tune it to output both versions 😄.

[ovidiuch]

I checked out master and it seems like this is already fixed in react-error-overlay@3.0.0. The published lib is an umd module.

Is there any reason to not use REO@3 here? I didn't find anything about this major upgrade in the CHANGELOG. Thanks!

[Timer]

Nope, you're correct! I forgot about our 3.0.0 timeline and it just so happened to come quickly. 😄