Test adapter doesn't build typescript source code

[rallets]

Hi, I'm using typescript and Mocha test adapter to run some unit tests in VS Code, it's a great tool! Everything works fine but I need to transpile the typescript code manually (via npx tsc) every time I edit the code... that's a bit annoying. If I don't do that, the test will run on the old transpilation. There is a way to run something like npx tsc before a test run? or am I missing a configuration somewhere? Thank you

[hbenl]

You should use a watcher, that will transpile each change as soon as you save it (and will be a lot faster than starting tsc and transpiling all sources every time). It's available by default as a task in VSCode: go to the Command palette and select "Tasks: Run Task" -> "typescript" -> "tsc: watch".

[rallets]

So there is no configuration (kind of trampoline) available in the adapter? is the watcher the only option? (so I can avoid that extra manual step)

[hbenl]

No, the adapter currently doesn't have such an option. If you want to avoid the extra manual step, you can configure the watcher to be run automatically (see here, in fact I use such a watcher task for this extension). Alternatively you can run your tests using ts-node (e.g. by adding "require": "ts-node/register/transpile-only" to .mocharc.json), then your sources will be compiled on-the-fly every time you run your tests (with the obvious performance hit).