Summary: "Explanation of `dtslint` folder in Effect source code"
I'm looking at the source of Effect, and I can see a
what is this thing doing? 
dtslintdtslint folder with a lot of files like this:import * as Duration from "effect/Duration"
// -------------------------------------------------------------------------------------
// decode
// -------------------------------------------------------------------------------------
// $ExpectType Duration
Duration.decode(100)
// $ExpectType Duration
Duration.decode(10n)
// $ExpectType Duration
Duration.decode("10 nanos")
// $ExpectType Duration
Duration.decode("10 micros")
// $ExpectType Duration
Duration.decode("10 millis")
// $ExpectType Duration
Duration.decode("10 seconds")
// $ExpectType Duration
Duration.decode("10 minutes")
// $ExpectType Duration
Duration.decode("10 hours")
// $ExpectType Duration
Duration.decode("10 days")
// $ExpectType Duration
Duration.decode("10 nanos")
// @ts-expect-error
Duration.decode("10 unknown")import * as Duration from "effect/Duration"
// -------------------------------------------------------------------------------------
// decode
// -------------------------------------------------------------------------------------
// $ExpectType Duration
Duration.decode(100)
// $ExpectType Duration
Duration.decode(10n)
// $ExpectType Duration
Duration.decode("10 nanos")
// $ExpectType Duration
Duration.decode("10 micros")
// $ExpectType Duration
Duration.decode("10 millis")
// $ExpectType Duration
Duration.decode("10 seconds")
// $ExpectType Duration
Duration.decode("10 minutes")
// $ExpectType Duration
Duration.decode("10 hours")
// $ExpectType Duration
Duration.decode("10 days")
// $ExpectType Duration
Duration.decode("10 nanos")
// @ts-expect-error
Duration.decode("10 unknown")
