⚡ Use dynamic imports instead of static imports

[segersniels]

Description

This PR updates the imports from static imports to dynamic imports which should result in some easy speed improvements.

Changed

• Improved startup speed by utilising dynamic imports for each command only when they are needed. This improves the initial startup time because it doesn't have to load in all the other commands that are unused.

Issues

• Performance improvements #1108

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (cdfc070) 91.90% compared to head (4cd4c45) 91.90%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1126   +/-   ##
=======================================
  Coverage   91.90%   91.90%           
=======================================
  Files          28       28           
  Lines         284      284           
  Branches       69       69           
=======================================
  Hits          261      261           
  Misses         22       22           
  Partials        1        1           

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[segersniels]

gitmoji  0.42s user 0.07s system 112% cpu 0.431 total
node lib/cli.js  0.16s user 0.03s system 78% cpu 0.253 total

gitmoji search bug linter  0.45s user 0.11s system 80% cpu 0.695 total
node lib/cli.js search bug linter  0.32s user 0.05s system 91% cpu 0.399 total

gitmoji list  0.44s user 0.07s system 88% cpu 0.580 total
node lib/cli.js list  0.31s user 0.05s system 92% cpu 0.383 total

[carloscuesta]

This is great! It improves startup time, but I'm wondering how much it affects the overall execution time of the command? So we can understand the trade-offs of the solution 👀

[segersniels]

It shouldn't affect anything. It defers loading to when it's needed instead of pulling everything in memory from the get go. Code execution following the dynamic import proceeds like usual. It just gets to executing a lot faster since it doesn't have to load in all the other commands and their dependencies.

Only downside of dynamic importing AFAIK is the fact that tree shaking won't be available for the commands and their dependencies.