c8 Lies in it's report when node.js loader and mocks used. There is not uncovered lines actually.
When I have next code:
import {readFileSync} from 'fs'; // don't want actual reading
import {execSync} from 'child_process'; // don't need actual execution
// just want test the function
export default async (name, program) => {
if (name)
return readFileSync(name, 'utf8');
if (program)
return execSync(program);
return 'nothing';
};I need to mock readFile and execSync somehow. If I don't use transpiler-based solutions (like tap,
5D6E
jest, ava etc), I have only loaders way of doing thing. I'm using 📼Supertape simplest test runner, so I need a way to mock EcmaScript Modules without transpiling (it eats a lot of time). So I use some transformation, but it's very simple and works with help of loaders which are very fast.