Install

npm install borp

yarn add borp

borp

Borp is a typescript-aware test runner for node:test.
It also support code coverage via c8.

Borp is self-hosted, i.e. Borp runs its own tests.

Install

 npm i borp --save-dev

Usage

 borp --coverage

# with check coverage active
borp --coverage --check-coverage --lines 95

Borp will automatically run all tests files matching *.test.{js|ts}.

Example project setup

.
├── src
│   ├── lib
│   │   └── math.ts
│   └── test
│       └── math.test.ts
└── tsconfig.json

As an example, consider having a src/lib/math.ts file

 export function math (x: number, y: number): number {
  return x + y
}

and a src/test/math.test.ts file:

 import { test } from 'node:test'
import { math } from '../lib/math.js'
import { strictEqual } from 'node:assert'

test('math', () => {
  strictEqual(math(1, 2), 3)
})

and the following tsconfig.json:

 {
  "$schema": "https://json.schemastore.org/tsconfig",
  "compilerOptions": {
    "outDir": "dist",
    "sourceMap": true,
    "target": "ES2022",
    "module": "NodeNext",
    "moduleResolution": "NodeNext",
    "esModuleInterop": true,
    "strict": true,
    "resolveJsonModule": true,
    "removeComments": true,
    "newLine": "lf",
    "noUnusedLocals": true,
    "noFallthroughCasesInSwitch": true,
    "isolatedModules": true,
    "forceConsistentCasingInFileNames": true,
    "skipLibCheck": true,
    "lib": [
      "ESNext"
    ],
    "incremental": true
  }
}

Note the use of incremental: true, which speed up compilation massively.

Options

--concurrency or -c, to set the number of concurrent tests. Defaults to the number of available CPUs minus one.
--coverage or -C, enables code coverage
--only or -o, only run node:test with the only option set
--watch or -w, re-run tests on changes
--timeout or -t, timeouts the tests after a given time; default is 30000 ms
--no-timeout, disables the timeout
--coverage-exclude or -X, a list of comma-separated patterns to exclude from the coverage report. All tests files are ignored by default.
--ignore or -i, ignore a glob pattern, and not look for tests there
--expose-gc, exposes the gc() function to tests
--pattern or -p, run tests matching the given glob pattern
--reporter or -r, set up a reporter, use a colon to set a file destination. Default: spec.
--no-typescript or -T, disable automatic TypeScript compilation if tsconfig.json is found.
--post-compile or -P, the path to a file that will be executed after each typescript compilation.
--check-coverage, enables c8 check coverage; default is false

Check coverage options

--lines, set the lines threshold when check coverage is active; default is 100
--functions, set the functions threshold when check coverage is active; default is 100
--statements, set the statements threshold when check coverage is active; default is 100
--branches, set the branches threshold when check coverage is active; default is 100

Reporters

Here are the available reporters:

gh: emits ::error workflow commands for GitHub Actions to show inlined errors. Enabled by default when running on GHA.
tap: outputs the test results in the TAP format.
spec: outputs the test results in a human-readable format.
dot: outputs the test results in a compact format, where each passing test is represented by a ., and each failing test is represented by a X.
junit: outputs test results in a jUnit XML format