Documentation Kotlin

[mylinhdao]

Documentation Kotlin

Closes #311
Every reviewer are welcome :)

Description

• Set node engine version to "node": ">=20": we import node-types-config.json with with keyword to define type. This is only supported from Node v20.
• Add documentation and tests for Kotlin
• We count object declarations and expressions and companion objects for "classes" metric, because they are anonymous classes ( see Kotlin documentation)

Note: The Kotlin parser has a bug actually and does not parse the functional interface fun interface... correctly. This leads to uncorrect file metric calculation in "classes" and "functions" metric. There is already a PR for this bug, so I will not add any special handling to cover it for now.
I open #324 to solve that.

Definition of Done

A PR is only ready for merge once all the following acceptance criteria are fulfilled:

• There are automated tests for newly written code and bug fixes
• All bugs discovered while working on this PR have been submitted as issues (if not already an open issue)
• Documentation (README.md, UPDATE_GRAMMARS.md) has been updated

Screenshots or gifs

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🟢	Lines	94.94% (🎯 90%)	4550 / 4792
🟢	Statements	94.94% (🎯 90%)	4550 / 4792
🟢	Functions	94.78% (🎯 90%)	200 / 211
🟢	Branches	91.82% (🎯 90%)	539 / 587

File Coverage

File	Stmts	% Branch	% Funcs	% Lines	Uncovered Lines
Changed Files
src/parser/helper/language.ts	96.24%	86.66%	100%	96.24%	178-183, 187-188

Generated in workflow #59