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## Linked issue Closes #4840 ## Summary / motivation Adds Vitest V8 coverage for TypeScript/Svelte tests via `@vitest/coverage-v8`. Introduces `just test-ts --coverage` and `just test-ts --coverage --html`, and wires TypeScript into the `just test --coverage` umbrella — completing coverage support across all three stacks (Python, Rust, TypeScript). The threshold is set to 5% — intentionally low because the Vitest test count is small relative to the TypeScript/Svelte source surface. It is meant to be raised as more tests are added. ## How to test ```sh # Existing behavior unchanged just test-ts # Terminal summary + enforces 5% line coverage threshold just test-ts --coverage # Terminal summary + HTML report under out/coverage/typescript/ just test-ts --coverage --html # Full umbrella — all three stacks just test --coverage just test --coverage --html ``` ### Checklist - [x] I ran `./ninja check` or an equivalent relevant check locally. ### Details - `@vitest/coverage-v8` pinned at `3.2.4` in `package.json`. - Reports are written to `out/coverage/typescript/` via `--coverage.reportsDirectory=../out/coverage/typescript` (relative to the `ts/` working directory where vitest runs). - V8 provider is preferred over Istanbul: faster and requires no Babel transform for TypeScript projects. - Coverage measures only code reachable through Vitest's module graph — Svelte component rendering is not covered. - The `yarn` justfile variable is added for platform-aware yarn invocation (Windows vs Unix). ## Before / after behavior Before: no `just test-ts`, no TypeScript coverage. After: `just test-ts` runs Vitest via ninja; `just test-ts --coverage` runs with V8 instrumentation. `just test --coverage` now spans all three stacks. --------- Co-authored-by: Abdo <abdo@abdnh.net>
17 lines
546 B
Batchfile
17 lines
546 B
Batchfile
@echo off
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setlocal
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set "outdir=out\coverage\typescript"
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set "YARN=out\extracted\node\yarn.cmd"
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if not exist %outdir% mkdir %outdir%
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set "COVERAGE_ARGS=--coverage.enabled true --coverage.provider=v8 --coverage.reporter=text-summary --coverage.reporter=json-summary"
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if "%1"=="--html" set "COVERAGE_ARGS=%COVERAGE_ARGS% --coverage.reporter=html"
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%YARN% vitest:once %COVERAGE_ARGS% --coverage.reportsDirectory=..\%outdir% --coverage.thresholds.lines=5 || exit /b 1
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if "%1"=="--html" (
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echo TypeScript coverage report: %outdir%\index.html
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)
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