test: use vitest instead of ava

package.json

@@ -29,8 +29,8 @@
 	"scripts": {
 		"compile": "tsc --build",
 		"lint": "eslint src test --ext '.ts'",
-		"test:unit": "ava",
-		"test:unit:coverage": "c8 ava"
+		"test:unit": "vitest",
+		"test:unit:coverage": "vitest run --coverage"
 	},
 	"devDependencies": {
 		"@semantic-release/changelog": "6.0.1",

test/toUint8Array.test.ts

@@ -1,8 +1,9 @@
-import test from "ava";
+import { test, assert } from "vitest";
 import atob from "atob";
 import { toUint8Array } from "../src/toUint8Array.js";
 
-test("convert given base64 string to an Uint8Array", (t) => {
+test("convert given base64 string to an Uint8Array", () => {
 	const actual = toUint8Array("BIW2q45TM1wfJz9", atob);
-	t.is(actual.toString(), "4,133,182,171,142,83,51,92,31,39,63");
+
+	assert.strictEqual(actual.toString(), "4,133,182,171,142,83,51,92,31,39,63");
 });

vitest.config.ts

@@ -0,0 +1,20 @@
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+	test: {
+		coverage: {
+			all: true,
+			lines: 100,
+			functions: 100,
+			statements: 100,
+			branches: 100,
+			extension: [".ts"],
+			include: ["src/**/*"],
+			exclude: ["src/index.ts"],
+			provider: "c8",
+			reporter: ["lcov", "text-summary", "clover"],
+			reportsDirectory: "./target/coverage",
+		},
+		include: ["./test/**/*.test.ts"],
+	},
+});