# `Tia.Recorder`
[🔗](https://github.com/devaction-labs/tia/blob/v0.1.0/lib/tia/recorder.ex#L1)

Reads which source files have run since the last `reset/1`.

It uses the JIT's native function counters (`:code.set_coverage_mode/1`,
OTP 27+). Unlike `:cover` they need no recompilation, and reading or zeroing
them is cheap enough to do between every two test files. A module counts as
executed when any of its functions was entered, which is the only thing the
map needs to know.

# `executed_sources`

```elixir
@spec executed_sources([module()], Path.t()) :: [String.t()]
```

Returns the sorted files behind the modules that executed since `reset/1`:
each module's source plus its `@external_resource` files, which is how
templates and other compiled-in data end up in the map.

# `reset`

```elixir
@spec reset([module()]) :: :ok
```

Zeroes the counters of the given modules.

# `start`

```elixir
@spec start(atom()) :: [module()]
```

Switches to function counters and reloads the application's modules under
them. Must run before the application starts: a module loaded earlier has no
counters.

---

*Consult [api-reference.md](api-reference.md) for complete listing*