Add package.json "files" entry

[tbeseda]

I realize using "files" in package.json essentially inverts how files are allowed into the published library, but it significantly reduces the size on disk for find-my-way (yes already small, but could be super small 😎 ).

npm notice === Tarball Details === 
npm notice name:          find-my-way                             
npm notice version:       7.6.2                                   
npm notice filename:      find-my-way-7.6.2.tgz                   
- npm notice package size:  79.4 kB
- npm notice unpacked size: 378.0 kB
- npm notice total files:   89
+ npm notice package size:  24.3 kB
+ npm notice unpacked size: 88.9 kB
+ npm notice total files:   14

The files that are packaged look correct to me, but here's a list

LICENSE                         
README.md                       
index.d.ts                      
index.js                        
lib/constrainer.js              
lib/handler-storage.js          
lib/http-methods.js             
lib/node.js                     
lib/pretty-print.js             
lib/strategies/accept-host.js   
lib/strategies/accept-version.js
lib/strategies/http-method.js   
lib/url-sanitizer.js            
package.json

fixes #327
Happy to hear feedback/make changes

[ivan-tymoshenko]

Thanks for the PR. I like the idea of removing files from the package, but I would prefer to have an “exclude” behavior rather than “include”. Someone can add a file that would be not included, but tests would pass. @mcollina WDYT?

[tbeseda]

I created #329 as an alternative that uses .npmignore 🍻

[Eomm]

I have this saved quick answer about this topic:

Thank you for your interest in this topic. Please see the discussion in fastify/skeleton#42 (comment) for my reasoning against such a change.

But this repo is @delvedor domain 🙌🏼

[felixmosh]

Why not using .npmignore files to exclude tests / benchmark folders?