Intent of completion.ts ×2

All 3 exact tests in this concept. Every test is marked by where it enters the hierarchy.

mocha:v1|namespace=yargs@4153e0f097aeaf43a71a2530db6dda51dff2c544:main|file=test/ 3 tests
- completion.mjs|title=Completion completion() allows the custom completion function to use the default completion w/ 1 test
  - mocha:v1|namespace=yargs@4153e0f097aeaf43a71a2530db6dda51dff2c544:main|file=test/completion.mjs|title=Completion completion() allows the custom completion function to use the default completion w/o filter|occurrence=1 Inherited o filter|occurrence=1
- mocha:v1|namespace=yargs@4153e0f097aeaf43a71a2530db6dda51dff2c544:main|file=test/completion.mjs|title=Completion completion() allows calling callback instead of default completion function|occurrence=1 Inherited completion.ts ×1
- mocha:v1|namespace=yargs@4153e0f097aeaf43a71a2530db6dda51dff2c544:main|file=test/completion.mjs|title=Completion completion() allows custom completion to be combined with default completion, using filter|occurrence=1 Inherited completion.mjs|title=Completion completion() allows custom completion to be combined with default completion, using filter|occurrence=1