refactor: migrate to new japa (#111)

.bin/japaTypes.ts

@@ -0,0 +1,7 @@
+import { Assert } from '@japa/assert'
+
+declare module '@japa/runner' {
+  interface TestContext {
+    assert: Assert
+  }
+}

.bin/test.ts

@@ -0,0 +1,37 @@
+import { assert } from '@japa/assert'
+import { specReporter } from '@japa/spec-reporter'
+import { runFailedTests } from '@japa/run-failed-tests'
+import { processCliArgs, configure, run } from '@japa/runner'
+
+/*
+|--------------------------------------------------------------------------
+| Configure tests
+|--------------------------------------------------------------------------
+|
+| The configure method accepts the configuration to configure the Japa
+| tests runner.
+|
+| The first method call "processCliArgs" process the command line arguments
+| and turns them into a config object. Using this method is not mandatory.
+|
+| Please consult japa.dev/runner-config for the config docs.
+*/
+configure({
+  ...processCliArgs(process.argv.slice(2)),
+  ...{
+    files: ['test/**/*.spec.ts'],
+    plugins: [assert(), runFailedTests()],
+    reporters: [specReporter()],
+    importer: (filePath: string) => import(filePath),
+  },
+})
+
+/*
+|--------------------------------------------------------------------------
+| Run tests
+|--------------------------------------------------------------------------
+|
+| The following "run" method is required to execute all the tests.
+|
+*/
+run()