Can't use with --experimental-test-coverage --test #437
Description
Acknowledgements
- I searched existing issues before opening this one to avoid duplicates
- I understand this is not a place for seek help, but to report a bug
- I understand that the bug must be proven first with a minimal reproduction
- I will be polite, respectful, and considerate of people's time and effort
Minimal reproduction URL
https://codesandbox.io/p/devbox/tsx-import-coverage-dkkgs3
I had to use codesandbox to have recent node version, you need local reproduction:
package.json
{
"name": "nodejs-sandbox",
"scripts": {
"start": "npm run test-a || npm run test-b || npm run test-c || npm run test-d",
"test-a": "tsx --experimental-test-coverage --test index.test.ts",
"test-b": "NODE_OPTIONS='--import tsx' node --experimental-test-coverage --test index.test.ts",
"test-c": "NODE_V8_COVERAGE=./coverage c8 -r html tsx --experimental-test-coverage --test index.test.ts",
"test-d": "NODE_OPTIONS='--import tsx' NODE_V8_COVERAGE=./coverage c8 -r html node --experimental-test-coverage --test index.test.ts"
},
"devDependencies": {
"c8": "^8.0.1",
"tsx": "^4.6.2"
}
}index.test.ts
import { describe, it } from "node:test";
import * as assert from "node:assert/strict";
describe("case", () => {
it("works", () => {
assert.equal(1, 1);
});
});Version
4.6.2
Node.js version
v20+
Package manager
npm
Operating system
Linux
Problem & Expected behavior
I'm trying to get tsx to work with the native test runner, coverage included
It seems to be failing with the following warning:
ℹ Warning: Could not report code coverage. TypeError: Cannot read properties of undefined (reading 'line')
Also, c8 is not able to generate any report:
Unknown%
Contributions
- I plan to open a pull request for this issue
- I plan to make a financial contribution to this project