lodash/fp with ESM

[luiz290788]

Is there anyway to use ESM with lodash/fp? I tried lodash-es but it looks like fp functions are not published as part of that pacakge.

[dobernike]

Is there anyway to use ESM with lodash/fp? I tried lodash-es but it looks like fp functions are not published as part of that pacakge.

I only found a way to use it in an ESM package, like: import compose from 'lodash/fp/compose.js'.

[phhu]

import fp from 'lodash/fp.js';
const {pipe, map, pickBy} = fp;

...seems to work.

[mohit-singh-pepper]

I don't think tree shaking will work like this.

[segevfiner]

Why...? Why wouldn't lodash-es also have the fp functions... Seriously... lodash CJS/ESM is a total mess. It should really be an hybrid CJS/ESM package under the same name with everything available (Using package.json entry points and exports)... This will make stuff just work so that bundlers can pick the ESM build and CJS only stuff can pick the CJS build.

[jdalton]

It’s because lodash-fp is a wrapper around lodash which makes it difficult to modularize

[segevfiner]

Wouldn't it just require yet another specialized transformation in the lodash cli for it? Same way that lodash-fp itself is created?

[jdalton]

I would require some tweaking and was technically possible with some back bending however, it’s been like 8yrs now so can say this confidently, FP in JavaScript is an anti pattern for work in teams and anything perf critical. I’m okay not investing in it going forward.

[segevfiner]

What would you suggest for use as an alternative to chain when you want to tree shake lodash?

[dword-design]

To jump into this discussion, I use the Babel pipeline operator and current proposal relies on non-FP functions. So stuff like this should work:

const foo = obj
  |> groupBy(%, 'name')
  |> mapValues(%, 'foo')

Drawback is that it isn't currently supported by TypeScript and that the proposal doesn't proceed a lot. Still I think that chained function calls without pipe doesn't scale.

[haskelcurry]

Is there any chance of reviving this topic? Lodash/FP is absolutely needed, ESM is needed too

[morewings]

Is there any chance of reviving this topic? Lodash/FP is absolutely needed, ESM is needed too

Just use Ramda 😉