diff --git a/.github/workflows/integrate.yml b/.github/workflows/integrate.yml
index ba6eaf2..b48d6b0 100644
--- a/.github/workflows/integrate.yml
+++ b/.github/workflows/integrate.yml
@@ -30,3 +30,9 @@ jobs:
 
       - name: Lint
         run: deno lint
+      
+      - name: Test
+        run: deno test -A --no-check
+
+      - name: Check
+        run: deno check src/**.ts
\ No newline at end of file
diff --git a/deno.lock b/deno.lock
index 8f522ab..8222ef3 100644
--- a/deno.lock
+++ b/deno.lock
@@ -1,7 +1,6 @@
 {
   "version": "2",
   "remote": {
-    "https://cdn.jsdelivr.net/npm/svelte@3.58.0/internal/index.mjs": "665e505def2e112363f88da8ac77ffcbbe1328dd2f0c490e39b0283e948a30c9",
     "https://deno.land/std@0.177.0/_util/asserts.ts": "178dfc49a464aee693a7e285567b3d0b555dc805ff490505a8aae34f9cfb1462",
     "https://deno.land/std@0.177.0/_util/os.ts": "d932f56d41e4f6a6093d56044e29ce637f8dcc43c5a90af43504a889cf1775e3",
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@@ -14,7 +13,6 @@
     "https://deno.land/std@0.177.0/async/pool.ts": "fd082bd4aaf26445909889435a5c74334c017847842ec035739b4ae637ae8260",
     "https://deno.land/std@0.177.0/async/retry.ts": "5efa3ba450ac0c07a40a82e2df296287b5013755d232049efd7ea2244f15b20f",
     "https://deno.land/std@0.177.0/async/tee.ts": "47e42d35f622650b02234d43803d0383a89eb4387e1b83b5a40106d18ae36757",
-    "https://deno.land/std@0.177.0/bytes/index_of_needle.ts": "65c939607df609374c4415598fa4dad04a2f14c4d98cd15775216f0aaf597f24",
     "https://deno.land/std@0.177.0/collections/_utils.ts": "5114abc026ddef71207a79609b984614e66a63a4bda17d819d56b0e72c51527e",
     "https://deno.land/std@0.177.0/collections/deep_merge.ts": "5a8ed29030f4471a5272785c57c3455fa79697b9a8f306013a8feae12bafc99a",
     "https://deno.land/std@0.177.0/crypto/_fnv/fnv32.ts": "e4649dfdefc5c987ed53c3c25db62db771a06d9d1b9c36d2b5cf0853b8e82153",
@@ -34,10 +32,8 @@
     "https://deno.land/std@0.177.0/encoding/hex.ts": "50f8c95b52eae24395d3dfcb5ec1ced37c5fe7610ef6fffdcc8b0fdc38e3b32f",
     "https://deno.land/std@0.177.0/flags/mod.ts": "d1cdefa18472ef69858a17df5cf7c98445ed27ac10e1460183081303b0ebc270",
     "https://deno.land/std@0.177.0/fmt/colors.ts": "938c5d44d889fb82eff6c358bea8baa7e85950a16c9f6dae3ec3a7a729164471",
-    "https://deno.land/std@0.177.0/fmt/printf.ts": "e5b426cd6ad13df5d408e9c375c025d59de30e380c5534715bd892df874ab057",
     "https://deno.land/std@0.177.0/fs/_util.ts": "65381f341af1ff7f40198cee15c20f59951ac26e51ddc651c5293e24f9ce6f32",
     "https://deno.land/std@0.177.0/fs/ensure_dir.ts": "724209875497a6b4628dfb256116e5651c4f7816741368d6c44aab2531a1e603",
-    "https://deno.land/std@0.177.0/fs/exists.ts": "b8c8a457b71e9d7f29b9d2f87aad8dba2739cbe637e8926d6ba6e92567875f8e",
     "https://deno.land/std@0.177.0/fs/walk.ts": "ea95ffa6500c1eda6b365be488c056edc7c883a1db41ef46ec3bf057b1c0fe32",
     "https://deno.land/std@0.177.0/http/file_server.ts": "86d624c0c908a4a377090668ee872cf5c064245da71b3e8f8f7df888cac869d5",
     "https://deno.land/std@0.177.0/http/http_status.ts": "8a7bcfe3ac025199ad804075385e57f63d055b2aed539d943ccc277616d6f932",
@@ -51,171 +47,6 @@
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     "https://deno.land/std@0.177.0/media_types/type_by_extension.ts": "6076a7fc63181d70f92ec582fdea2c927eb2cfc7f9c9bee9d6add2aca86f2355",
     "https://deno.land/std@0.177.0/media_types/vendor/mime-db.v1.52.0.ts": "6925bbcae81ca37241e3f55908d0505724358cda3384eaea707773b2c7e99586",
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-    "https://deno.land/std@0.177.0/node/_events.mjs": "d4ba4e629abe3db9f1b14659fd5c282b7da8b2b95eaf13238eee4ebb142a2448",
-    "https://deno.land/std@0.177.0/node/_fs/_fs_access.ts": "48a722db00fd34ec567c1d03c47f6b94d07658c658eeb7d9a10c6b823ebdefbd",
-    "https://deno.land/std@0.177.0/node/_fs/_fs_appendFile.ts": "2e5230c88804f4b5bee29efa1ba723d71a53f9b0f85d5e6372509ba12e9c00c3",
-    "https://deno.land/std@0.177.0/node/_fs/_fs_chmod.ts": "fcba6aa4fe2d9178746b5b4ae7f42a72a971007c855988f0e26ff8f694c3c212",
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-    "https://deno.land/std@0.177.0/node/internal_binding/messaging.ts": "37d293009d1718205bf28e878e54a9f1ca24c1c320cee2416c20dc054104c6ea",
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-    "https://deno.land/std@0.177.0/node/internal_binding/string_decoder.ts": "54c3c1cbd5a9254881be58bf22637965dc69535483014dab60487e299cb95445",
-    "https://deno.land/std@0.177.0/node/internal_binding/symbols.ts": "4dee2f3a400d711fd57fa3430b8de1fdb011e08e260b81fef5b81cc06ed77129",
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-    "https://deno.land/std@0.177.0/node/internal_binding/tcp_wrap.ts": "d298d855e862fc9a5c94e13ad982fde99f6d8a56620a4772681b7226f5a15c91",
-    "https://deno.land/std@0.177.0/node/internal_binding/timers.ts": "37d293009d1718205bf28e878e54a9f1ca24c1c320cee2416c20dc054104c6ea",
-    "https://deno.land/std@0.177.0/node/internal_binding/tls_wrap.ts": "37d293009d1718205bf28e878e54a9f1ca24c1c320cee2416c20dc054104c6ea",
-    "https://deno.land/std@0.177.0/node/internal_binding/trace_events.ts": "37d293009d1718205bf28e878e54a9f1ca24c1c320cee2416c20dc054104c6ea",
-    "https://deno.land/std@0.177.0/node/internal_binding/tty_wrap.ts": "37d293009d1718205bf28e878e54a9f1ca24c1c320cee2416c20dc054104c6ea",
-    "https://deno.land/std@0.177.0/node/internal_binding/types.ts": "2187595a58d2cf0134f4db6cc2a12bf777f452f52b15b6c3aed73fa072aa5fc3",
-    "https://deno.land/std@0.177.0/node/internal_binding/udp_wrap.ts": "b77d7024aef1282b9fe6e1f6c8064ab8a7b9ecbae0bc08a36f2b30dcbb1d2752",
-    "https://deno.land/std@0.177.0/node/internal_binding/url.ts": "37d293009d1718205bf28e878e54a9f1ca24c1c320cee2416c20dc054104c6ea",
-    "https://deno.land/std@0.177.0/node/internal_binding/util.ts": "808ff3b92740284184ab824adfc420e75398c88c8bccf5111f0c24ac18c48f10",
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-    "https://deno.land/std@0.177.0/node/internal_binding/v8.ts": "37d293009d1718205bf28e878e54a9f1ca24c1c320cee2416c20dc054104c6ea",
-    "https://deno.land/std@0.177.0/node/internal_binding/worker.ts": "37d293009d1718205bf28e878e54a9f1ca24c1c320cee2416c20dc054104c6ea",
-    "https://deno.land/std@0.177.0/node/internal_binding/zlib.ts": "37d293009d1718205bf28e878e54a9f1ca24c1c320cee2416c20dc054104c6ea",
-    "https://deno.land/std@0.177.0/node/path.ts": "1c6aa9101554136525b368e8280f0f78136d4071dd71ad3a70477f27d9e4dd91",
-    "https://deno.land/std@0.177.0/node/path/_constants.ts": "2e2f68b8679cbf0ef118de8e5719e90cfb091de17d4a7c026c911b6772e6a247",
-    "https://deno.land/std@0.177.0/node/path/_interface.ts": "c67d76726d0f86ea62ec68d17f11d50680c4659a60a0ea6dcd2488109435b4ce",
-    "https://deno.land/std@0.177.0/node/path/_util.ts": "44deaf5bbd947eafb3439ea7208d0625e231c5f55c421fe83f5ef91218dcd28c",
-    "https://deno.land/std@0.177.0/node/path/common.ts": "ee7505ab01fd22de3963b64e46cff31f40de34f9f8de1fff6a1bd2fe79380000",
-    "https://deno.land/std@0.177.0/node/path/glob.ts": "b5fc2aed74aa7511cfd07d52dcd595cc18cd7ca431326a664e735d8905d85ce8",
-    "https://deno.land/std@0.177.0/node/path/mod.ts": "cad27b16a7a3a8c2bb3ad1ba68a63d11e4fb616d63fd55c95e399a0a3a927be2",
-    "https://deno.land/std@0.177.0/node/path/posix.ts": "a066e77f554358a82b4a693726faa41932f02f5bcd520f07afb6b2372e62484d",
-    "https://deno.land/std@0.177.0/node/path/separator.ts": "5cfefe182e88bc8138022475703a9b39b13250c79bf234cdc6e3be9afd639662",
-    "https://deno.land/std@0.177.0/node/path/win32.ts": "3a1b21948e0063cf1ac1c6834ef3ed633b5405f107be01aadfaedd2088b57eef",
-    "https://deno.land/std@0.177.0/node/process.ts": "6608012d6d51a17a7346f36079c574b9b9f81f1b5c35436489ad089f39757466",
-    "https://deno.land/std@0.177.0/node/querystring.ts": "2dce8068cb80ce2bf503aecd888be1b89827288352b6581e0fc401886d56cd86",
-    "https://deno.land/std@0.177.0/node/stream.ts": "09e348302af40dcc7dc58aa5e40fdff868d11d8d6b0cfb85cbb9c75b9fe450c7",
-    "https://deno.land/std@0.177.0/node/string_decoder.ts": "1a17e3572037c512cc5fc4b29076613e90f225474362d18da908cb7e5ccb7e88",
-    "https://deno.land/std@0.177.0/node/url.ts": "f8c6656f32728a447705a273e3d8a5118631c0b6560d13fc613901ec9a3f69d0",
-    "https://deno.land/std@0.177.0/node/util.ts": "4c12edeafde7e50dfe2d4022e383decb422c77858b938b093698cb7250c9e125",
-    "https://deno.land/std@0.177.0/node/util/types.ts": "461b2e1118fd32456967e14b99f01c892dee1e94d144d6b96e9d94eb086a9574",
     "https://deno.land/std@0.177.0/path/_constants.ts": "e49961f6f4f48039c0dfed3c3f93e963ca3d92791c9d478ac5b43183413136e0",
     "https://deno.land/std@0.177.0/path/_interface.ts": "6471159dfbbc357e03882c2266d21ef9afdb1e4aa771b0545e90db58a0ba314b",
     "https://deno.land/std@0.177.0/path/_util.ts": "d7abb1e0dea065f427b89156e28cdeb32b045870acdf865833ba808a73b576d0",
@@ -225,8 +56,9 @@
     "https://deno.land/std@0.177.0/path/posix.ts": "8b7c67ac338714b30c816079303d0285dd24af6b284f7ad63da5b27372a2c94d",
     "https://deno.land/std@0.177.0/path/separator.ts": "0fb679739d0d1d7bf45b68dacfb4ec7563597a902edbaf3c59b50d5bcadd93b1",
     "https://deno.land/std@0.177.0/path/win32.ts": "d186344e5583bcbf8b18af416d13d82b35a317116e6460a5a3953508c3de5bba",
-    "https://deno.land/std@0.177.0/streams/write_all.ts": "3b2e1ce44913f966348ce353d02fa5369e94115181037cd8b602510853ec3033",
-    "https://deno.land/std@0.177.0/types.d.ts": "220ed56662a0bd393ba5d124aa6ae2ad36a00d2fcbc0e8666a65f4606aaa9784",
+    "https://deno.land/std@0.177.0/testing/_diff.ts": "1a3c044aedf77647d6cac86b798c6417603361b66b54c53331b312caeb447aea",
+    "https://deno.land/std@0.177.0/testing/_format.ts": "a69126e8a469009adf4cf2a50af889aca364c349797e63174884a52ff75cf4c7",
+    "https://deno.land/std@0.177.0/testing/asserts.ts": "984ab0bfb3faeed92ffaa3a6b06536c66811185328c5dd146257c702c41b01ab",
     "https://deno.land/std@0.177.0/version.ts": "259c8866ec257c3511b437baa95205a86761abaef852a9b2199072accb2ef046",
     "https://deno.land/std@0.179.0/_util/asserts.ts": "178dfc49a464aee693a7e285567b3d0b555dc805ff490505a8aae34f9cfb1462",
     "https://deno.land/std@0.179.0/_util/os.ts": "d932f56d41e4f6a6093d56044e29ce637f8dcc43c5a90af43504a889cf1775e3",
@@ -257,29 +89,23 @@
     "https://deno.land/x/denoflate@1.2.1/pkg/denoflate.js": "b9f9ad9457d3f12f28b1fb35c555f57443427f74decb403113d67364e4f2caf4",
     "https://deno.land/x/denoflate@1.2.1/pkg/denoflate_bg.wasm.js": "d581956245407a2115a3d7e8d85a9641c032940a8e810acbd59ca86afd34d44d",
     "https://deno.land/x/esbuild@v0.17.16/mod.d.ts": "dc279a3a46f084484453e617c0cabcd5b8bd1920c0e562e4ea02dfc828c8f968",
-    "https://deno.land/x/esbuild@v0.17.16/mod.js": "5d7e63d0fe5cd00697ad81a5dfd1346f436cff4e16aa544adc4a1bbdea683e07",
-    "https://esm.sh/v115/@types/estree@1.0.0/index.d.ts": "946bd1737d9412395a8f24414c70f18660b84a75a12b0b448e6eb1a2161d06dd",
-    "https://esm.sh/v115/esbuild-svelte@0.7.3": "cb50bc9567802c7ceb14514555bc3e8d133d977ab50399fcef5d1463cffe1499",
-    "https://esm.sh/v115/esbuild-svelte@0.7.3/deno/esbuild-svelte.mjs": "c07fb3e1993d7b3b429133f8ba57c5d046951ef99e6549161c2133362c000392",
-    "https://esm.sh/v115/esbuild-svelte@0.7.3/dist/index.d.ts": "188c05306f1ff77e86790977ffe74130aa5741361201b767029fe6fa1987e591",
-    "https://esm.sh/v115/esbuild@0.17.16/lib/main.d.ts": "1de57a4b04b40d72846a68a7bc4a249398d8f2ed6f064ae6396500a1f7d86434",
-    "https://esm.sh/v115/magic-string@0.30.0/index.d.ts": "dff50cb5dc6990d26ea2a5a3320132e872d258d283599e744c8fa603ab40f88b",
-    "https://esm.sh/v115/svelte@3.58.0/deno/compiler.js": "8201b8eb732956080c0c3e39d626857446c42d77570895998e5fa3d401667a28",
-    "https://esm.sh/v115/svelte@3.58.0/types/compiler/interfaces.d.ts": "2aab01ffa95a9a8026f2284348fc433255fe6a222d20d177f9f61bea3fdf5d35",
-    "https://esm.sh/v115/svelte@3.58.0/types/runtime/ambient.d.ts": "87e050a99a47903235f3b8b84fca1f9fb80ae4492cfd9a750b2c2a6d92fb186f",
-    "https://esm.sh/v115/svelte@3.58.0/types/runtime/index.d.ts": "4c02ff13240e321323cef19c083f7d53ec51fda9ea984670263664ab7c43c52d"
+    "https://deno.land/x/esbuild@v0.17.16/mod.js": "5d7e63d0fe5cd00697ad81a5dfd1346f436cff4e16aa544adc4a1bbdea683e07"
   },
   "npm": {
     "specifiers": {
-      "prettier": "prettier@2.8.7",
-      "svelte": "svelte@3.58.0",
-      "svelte@3.58.0": "svelte@3.58.0"
+      "prettier": "prettier@2.8.8",
+      "prettier@2.8.7": "prettier@2.8.7",
+      "svelte": "svelte@3.58.0"
     },
     "packages": {
       "prettier@2.8.7": {
         "integrity": "sha512-yPngTo3aXUUmyuTjeTUT75txrf+aMh9FiD7q9ZE/i6r0bPb22g4FsE6Y338PQX1bmfy08i9QQCB7/rcUAVntfw==",
         "dependencies": {}
       },
+      "prettier@2.8.8": {
+        "integrity": "sha512-tdN8qQGvNjw4CHbY+XXk0JgCXn9QiF21a55rBe5LJAU+kDyC4WQn4+awm2Xfk2lQMk5fKup9XgzTZtGkjBdP9Q==",
+        "dependencies": {}
+      },
       "svelte@3.58.0": {
         "integrity": "sha512-brIBNNB76mXFmU/Kerm4wFnkskBbluBDCjx/8TcpYRb298Yh2dztS2kQ6bhtjMcvUhd5ynClfwpz5h2gnzdQ1A==",
         "dependencies": {}
diff --git a/src/build.test.ts b/src/build.test.ts
new file mode 100644
index 0000000..fc42d63
--- /dev/null
+++ b/src/build.test.ts
@@ -0,0 +1,60 @@
+import { assert } from "https://deno.land/std@0.177.0/testing/asserts.ts";
+import { build } from "./build.ts";
+
+const base = "mononykus/";
+const site_dir = "src/_site";
+
+Deno.test({
+	name: "Able to build the current project",
+	fn: async () => {
+		await build({ base, site_dir });
+	},
+});
+
+Deno.test({
+	name: "Able to develop the current project",
+	fn: async () => {
+		const command = new Deno.Command(
+			Deno.execPath(),
+			{
+				args: [
+					"task",
+					"dev",
+				],
+				stdout: "null",
+				stderr: "null",
+			},
+		);
+
+		const process = command.spawn();
+
+		await new Promise<void>((resolve) => {
+			const check_if_port_is_open = async () => {
+				try {
+					const { status } = await fetch("http://localhost:4507/mononykus/", {
+						method: "HEAD",
+					});
+					if (status === 200) resolve();
+				} catch (_) {
+					setTimeout(check_if_port_is_open, 60);
+				}
+			};
+			return check_if_port_is_open();
+		});
+
+		const response = await fetch("http://localhost:4507/mononykus/");
+
+		const html = await response.text();
+
+		process.kill();
+		await process.output();
+
+		assert(html.startsWith(
+			"<!DOCTYPE html>",
+		));
+		assert(html.includes(
+			"<title>Mononykus – Deno + Svelte</title>",
+		));
+	},
+	sanitizeResources: true,
+});
diff --git a/src/build.ts b/src/build.ts
index 6438de6..f165b28 100644
--- a/src/build.ts
+++ b/src/build.ts
@@ -133,7 +133,7 @@ export const build = async (
 	const out_dir = slashify(_out_dir);
 	const site_dir = slashify(_site_dir);
 
-	clean(out_dir);
+	await clean(out_dir);
 
 	await rebuild({ base, out_dir, site_dir, minify });
 
@@ -152,7 +152,7 @@ export const watch = async (
 	const out_dir = slashify(_out_dir);
 	const site_dir = slashify(_site_dir);
 
-	clean(out_dir);
+	await clean(out_dir);
 
 	const _rebuild = () => rebuild({ base, out_dir, site_dir, minify });
 
diff --git a/src/esbuild_plugins/get_route_html.ts b/src/esbuild_plugins/get_route_html.ts
index 625c8c7..916df2e 100644
--- a/src/esbuild_plugins/get_route_html.ts
+++ b/src/esbuild_plugins/get_route_html.ts
@@ -1,3 +1,4 @@
+// @ts-expect-error -- the package is untyped
 import { format } from "npm:prettier";
 
 interface TemplateOptions {
diff --git a/src/server.ts b/src/server.ts
index 86d6ae4..55f479d 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -1,19 +1,22 @@
 import { Handler } from "https://deno.land/std@0.177.0/http/server.ts";
 import { serveDir } from "https://deno.land/std@0.177.0/http/file_server.ts";
+import { normalize as normalise } from "https://deno.land/std@0.177.0/path/posix.ts";
 
 interface ServerOptions {
-	base?: string;
+	base: string;
 	out_dir: string;
 }
 
 export const create_handler = (
-	{ base = "", out_dir }: ServerOptions,
+	{ base, out_dir }: ServerOptions,
 ): Handler => ((req) => {
 	const url = new URL(req.url);
 
-	if (url.pathname.startsWith("/" + base)) {
+	if (url.pathname.startsWith(normalise("/" + base))) {
 		return serveDir(req, { fsRoot: out_dir, urlRoot: base });
 	} else {
-		return Response.redirect(new URL(base + url.pathname, url.origin));
+		return Response.redirect(
+			new URL(normalise(base + url.pathname), url.origin),
+		);
 	}
 });