chore: add typescript declaration file

[lextoc]

Saw request for declaration file, does this look good?

https://github.com/bevacqua/fuzzysearch/issues/23

[jchook]

Your type definition is slightly incorrect:

1. export default corresponds to require('fuzzysearch').default
2. both arguments have type string

Try this instead:

declare function fuzzysearch (needle: string, haystack: string): boolean;

export = fuzzysearch;

[ajoslin103]

I added this when I wrapped search for my own uses

export type FuzzyResults = (string | object)[] | MatchData<string | object>[];

[remcohaszing]

@jchook is correct. A PR to add correct type definitions is available in #19. Such definitions are also available via @types/fuzzysearch. I suggest closing this PR.