Create index.d.ts

[Jetsly]

#62
Copy from

https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/webpack-chain/index.d.ts

add

mode(value: 'development' | 'production') : this;
parallelism(value: number) : this;

modify

minimizer(value: webpack.Plugin[]): this;
=>
minimizer(name: string): Config.Plugin<this>;

[edmorley]

Hi! Thank you for the PR.

I'm definitely open to the idea of adding type definitions, however we'll want to make sure they are tested on Travis so PRs don't accidentally break them at a later point.

Also, what are your thoughts on changing this to use the code comment type form and then have the build extract the types to the .d.ts file?

[Jetsly]

if write with typescript can auto extract the .d.ts file

[eliperelman]

We won't be using TypeScript for the code itself.

[edmorley]

Why was this closed? :-)

We'll happily accept definitions so long as tested on Travis (either as a separate definitions file, or as in-line comments if that form is supported by TypeScript, similar to flow's feature?).

[gluons]

@Jetsly Why did you close this PR? 😵

[Jetsly]

i modify incomplete