feat(loadmodule): support environment override

[kwonoj]

No description provided.

[codecov]

Codecov Report

Merging #14 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master    #14   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           7      8    +1     
  Lines          52     62   +10     
  Branches        8     11    +3     
=====================================
+ Hits           52     62   +10

Impacted Files	Coverage Δ
src/util/isNode.ts	100% <ø> (ø)	⬆️
src/loadModule.ts	100% <100%> (ø)	⬆️
src/environment.ts	100% <100%> (ø)
src/index.ts	100% <100%> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b489f03...b893736. Read the comment docs.