Prevent import * into index.js file so that bundlers can treeshake efficiently.

[Jme797]

Fixes: #2587

Modifies the exports inside index.js so that instead of importing all the code into the file and exporting it as a single object it just exports the functions directly.

This comes with the caveat you can no longer import * like import validator from 'validator' in esm modules because that prevents codesplitting.

If you really want to for whatever reason you can replace that syntax with import * as validator from 'validator'

Though importing specific functions is more efficient using imports like import {isEmail} from 'validator'

Checklist

• [ ] PR contains only changes related; no stray files, etc.
• [ ] README updated (where applicable)
• [ ] Tests written (where applicable)
• [ ] References provided in PR (where applicable)

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 100.00%. Comparing base (6f436be) to head (de9b0c7).

Additional details and impacted files

@@            Coverage Diff            @@
##            master     #2588   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          114       115    +1     
  Lines         2536      2535    -1     
  Branches       642       643    +1     
=========================================
- Hits          2536      2535    -1     

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[WikiRik]

@Jme797 I'm noticing the test failures in other PRs as well. I think it's a dependency issue, will look into it later