babel-preset: updates

[tunnckoCore]

1. add babel-plugin-unassert - similar to what TSDX is doing with babel-plugin-dev-expression, why not even both.

• Do your pkgr: rollup replace thing here too (https://github.com/rx-ts/pkgr/blob/master/packages/rollup/src/config.ts#L374-L387)
• other possibilities: babel-plugin-transform-node-env-inline, babel-plugin-transform-inline-environment-variables

2. add babel-plugin-annotate-pure-calls
3. allow passing and overriding of preset-env options
4. allow disabling of fast-async or allow passing/override options
5. add babel-plugin-minify-builtins

I know that that's the point of having custom shareable configs, but this preset is quite good and I agree with most of it anyway. There's very few full featured and good presets out there.

[JounQin]

allow disabling of fast-async or allow passing/override options

If you prefer generator, pass a truthy generator option:

https://github.com/1stG/configs/blob/master/packages/babel-preset/index.js#L112

[tunnckoCore]

If you prefer generator, pass a truthy generator option:

Yes, but I prefer NO transformations for async/await :D If I pass generator: false they won't be excluded from preset-env so it will be transformed. That's can be fixed with 3.

Plus: add babel-plugin-minify-dead-code-elimination.

[JounQin]

Thx for suggestions, I'll consider them tomorrow, I'm going to sleep now. 🤣

Good Night ~

[tunnckoCore]

Okay. No worry. :)

[JounQin]

I was a bit busy on business, but I'm thinking they should be included in another preset like babel-preset-minify or a new babel-preset-optimize.

[JounQin]

And about the async syntax, I think an option like asyncTransformer: 'fast' | 'generator' | false should be fine.

And promise for babel-plugin-transform-async-to-promises could be considered also.

[tunnckoCore]

I'm thinking they should be included in another preset like

Yup, was thinking to publish something like that.

And about the async syntax

Great idea. Agree. :)