[Feat] - Making Library TypeSafe - Refactoring

[adithyaakrishna]

Description:

• We use this library at https://github.com/3dmol/3Dmol.js
• I'm in the process of making that library TypeSafe, the netcdfjs module was not typesafe and hence I thought to send a fix to the upstream module as well :)

Edit: This PR is an extension of #24

Note: This PR is still a WIP

[codecov]

Codecov Report

Patch coverage: 95.58% and project coverage change: +1.30% 🎉

Comparison is base (bea14eb) 94.44% compared to head (27b083f) 95.74%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #26      +/-   ##
==========================================
+ Coverage   94.44%   95.74%   +1.30%     
==========================================
  Files           6        6              
  Lines         252      282      +30     
  Branches       55       65      +10     
==========================================
+ Hits          238      270      +32     
+ Misses         14       12       -2     

Files Changed	Coverage Δ
src/types.ts	94.73% <90.90%> (ø)
src/data.ts	91.66% <91.66%> (ø)
src/header.ts	95.69% <95.69%> (ø)
src/parser.ts	96.55% <100.00%> (ø)
src/toString.ts	100.00% <100.00%> (ø)
src/utils.ts	100.00% <100.00%> (ø)

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[adithyaakrishna]

@lpatiny Could you please let me know if there is any further testing or updating I need to do before confirming the changes?

[targos]

Thanks a lot!