broken types for `parse`

[alecf]

by adding |number to the value side of ParsedQuery, you've changed the return type in a really breaking the type signature for users who don't use parseNumbers - now every use of this generates errors like this:

[devserver] TS2345: Argument of type 'string | number | ReactText[]' is not assignable to parameter of type 'string | string[]'.
[devserver]   Type 'number' is not assignable to type 'string | string[]'.

This is only going to get worse when #183 is fixed.

I'd like to suggest either a complex typescript signature such that only passing parseNumbers results in the new string |number| (number|string)[], or introduce a new function parseValues which does the number/boolean/etc

[danilofuchs]

The first option seems better:
Have a complex type signature that changes output type depending on config.
This could also be applied to arrays, maybe only if you pass parseArray option, it could return an Array

[sindresorhus]

I'd like to suggest either a complex typescript signature such that only passing parseNumbers results in the new string |number| (number|string)[]

👍 PR welcome :)

[felixoi]

Is someone with Typescript knowledge working on this? I'd like to fix it but I've kinda no knowledge of Typescript.