How to setup mocha in typescript ES Module Install dependencies npm npm install -D mocha chai ts-mocha typescript ts-node .mocharc.json for typescript ESM proje
programming
typescript
,
nodejs
,
mocha
,
esm
Install dependencies
npm
npm install -D mocha chai ts-mocha typescript ts-node
.mocharc.json for typescript ESM project
{
"extension": [
"ts"
],
"node-option": [
"experimental-specifier-resolution=node",
"loader=ts-node/esm.mjs"
],
"spec": [
"test/**/*.spec.ts"
]
}
"test/**/*.spec.ts"
is pattern all test files
"node-option"
is node cli arguments
ensure type module in package.json
{
"type": "module"
}
Make sample test
create file test/basic.spec.ts
with below codes
import assert from 'assert';
describe('My function', function () {
it('should test', function () {
assert.equal(1, 2);
});
});
How to test
mocha test all patterns from .mocharc.json
mocha
mocha testing bulk files
ts-mocha test/*.spec.ts
mocha testing single file
ts-mocha test/basic.spec.ts
mocha test reporting to html
mocha --reporter doc > reports/report.html