Prefer namespace imports

Prefer namespace imports when importing more than n exports from a module.

// bad
import {map, reduce, filter} from 'lodash';

// good 
import * as _ from 'lodash';

Why?

Mainly git diff results. With namespace imports we don’t have to touch the importing line.

It’s also making the namespace variable more discoverable using the code-completion tools. Hitting _. will prompt all exports of lodash in editors that support interlisense

[mohsen1]

it also makes treeshaking/dead code removal not work as well

That’s not true. Webpack and Rollup both can tree shake namespace imports and in case non-esModule modules destructuring won’t help the tree-shaking either.

The diff with import destructuring is not minimal. Users have to add a new line regardless.

Laziness is very subjective also.

[jasonkuhrt]

I think namesapces can play a helpful role in making code more readable. Its surprisingly relatively difficult to get a straight story on the subject of tree-shaking behaviour in various scenario across bundlers. fwiw I put up some of my own demos here https://github.com/jasonkuhrt/tree-shaking-demos to tree-shake (ahem) some of my FUD. Its a start, not exhaustive.