diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index dcabdea..5c0fe9a 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -68,6 +68,19 @@ jobs:
       run: |
         set -ex
         [[ "$(jq -r .version deno.json)" = "$GITHUB_REF_NAME" ]]
+    - run: 'deno task dnt "$(jq -r .version deno.json)"'
+    - if: github.event_name == 'push'
+      run: |
+        set -ex
+        npm config set //registry.npmjs.org/:_authToken "$NPM_AUTH_TOKEN"
+        if [[ "$GITHUB_REF_TYPE" = "tag" ]]; then
+          npm publish --provenance --access public
+        else
+          npm publish --provenance --access public --tag
+        fi
+      env:
+        NPM_AUTH_TOKEN: ${{ secrets.NPM_AUTH_TOKEN }}
+      working-directory: ${{ github.workspace }}/npm/
     - if: github.event_name == 'pull_request'
       run: deno publish --dry-run --allow-dirty
     - if: github.event_name == 'push'
diff --git a/.gitignore b/.gitignore
index 7da804e..5a27765 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 coverage/
+npm/
diff --git a/deno.json b/deno.json
index f7cc407..46d297b 100644
--- a/deno.json
+++ b/deno.json
@@ -3,14 +3,17 @@
   "version": "0.1.0",
   "exports": "./logtape/mod.ts",
   "imports": {
+    "@deno/dnt": "jsr:@deno/dnt@^0.41.1",
     "@std/assert": "jsr:@std/assert@^0.222.1",
     "@std/async": "jsr:@std/async@^0.222.1",
+    "@std/fs": "jsr:@std/fs@^0.223.0",
     "@std/testing": "jsr:@std/testing@^0.222.1",
     "consolemock": "npm:consolemock@^1.1.0"
   },
   "exclude": [
     "*-venv/",
     "coverage/",
+    "npm/",
     "README.md"
   ],
   "lock": false,
@@ -18,6 +21,7 @@
     "check": "deno check **/*.ts && deno lint && deno fmt --check",
     "test": "deno test --allow-read=logtape/__snapshots__ --allow-write=logtape/__snapshots__",
     "coverage": "rm -rf coverage && deno task test --coverage && deno coverage --html coverage",
+    "dnt": "deno run -A dnt.ts",
     "hooks:install": "deno run --allow-read=deno.json,.git/hooks/ --allow-write=.git/hooks/ jsr:@hongminhee/deno-task-hooks",
     "hooks:pre-commit": "deno task check",
     "hooks:pre-push": "deno task test"
diff --git a/dnt.ts b/dnt.ts
new file mode 100644
index 0000000..91eec62
--- /dev/null
+++ b/dnt.ts
@@ -0,0 +1,47 @@
+import { build, emptyDir } from "@deno/dnt";
+import metadata from "./deno.json" with { type: "json" };
+
+await emptyDir("./npm");
+
+await build({
+  package: {
+    name: "@logtape/logtape",
+    version: Deno.args[0] ?? metadata.version,
+    description: "Simple logging library for Deno/Node.js/Bun/browsers",
+    license: "MIT",
+    author: {
+      name: "Hong Minhee",
+      email: "hong@minhee.org",
+      url: "https://hongminhee.org/",
+    },
+    homepage: "https://github.com/dahlia/logtape",
+    repository: {
+      type: "git",
+      url: "git+https://github.com/dahlia/logtape.git",
+    },
+    bugs: {
+      url: "https://github.com/dahlia/logtape/issues",
+    },
+  },
+  outDir: "./npm",
+  entryPoints: ["./logtape/mod.ts"],
+  importMap: "./deno.json",
+  shims: {
+    deno: "dev",
+    custom: [
+      {
+        module: "node:stream/web",
+        globalNames: ["WritableStream"],
+      },
+    ],
+  },
+  typeCheck: "both",
+  declaration: "separate",
+  declarationMap: true,
+  async postBuild() {
+    await Deno.copyFile("LICENSE", "npm/LICENSE");
+    await Deno.copyFile("README.md", "npm/README.md");
+  },
+});
+
+// cSpell: ignore Minhee
diff --git a/logtape/__snapshots__/sink.test.ts.snap b/logtape/__snapshots__/sink.test.ts.snap
deleted file mode 100644
index 1ad058b..0000000
--- a/logtape/__snapshots__/sink.test.ts.snap
+++ /dev/null
@@ -1,70 +0,0 @@
-export const snapshot = {};
-
-snapshot[`getStreamSink() 1`] = `
-"2023-11-14 22:13:20.000 +00:00 [DBG] Hello, 123 & 456!
-2023-11-14 22:13:20.000 +00:00 [INF] Hello, 123 & 456!
-2023-11-14 22:13:20.000 +00:00 [WRN] Hello, 123 & 456!
-2023-11-14 22:13:20.000 +00:00 [ERR] Hello, 123 & 456!
-2023-11-14 22:13:20.000 +00:00 [FTL] Hello, 123 & 456!
-"
-`;
-
-snapshot[`getConsoleSink() 1`] = `
-[
-  {
-    DEBUG: [
-      "%cDEBUG%c %cmy-app·junk %cHello, %o & %o!",
-      "background-color: gray; color: white;",
-      "background-color: default;",
-      "color: gray;",
-      "color: default;",
-      123,
-      456,
-    ],
-  },
-  {
-    INFO: [
-      "%cINFO%c %cmy-app·junk %cHello, %o & %o!",
-      "background-color: white; color: black;",
-      "background-color: default;",
-      "color: gray;",
-      "color: default;",
-      123,
-      456,
-    ],
-  },
-  {
-    WARN: [
-      "%cWARNING%c %cmy-app·junk %cHello, %o & %o!",
-      "background-color: orange;",
-      "background-color: default;",
-      "color: gray;",
-      "color: default;",
-      123,
-      456,
-    ],
-  },
-  {
-    ERROR: [
-      "%cERROR%c %cmy-app·junk %cHello, %o & %o!",
-      "background-color: red;",
-      "background-color: default;",
-      "color: gray;",
-      "color: default;",
-      123,
-      456,
-    ],
-  },
-  {
-    ERROR: [
-      "%cFATAL%c %cmy-app·junk %cHello, %o & %o!",
-      "background-color: maroon;",
-      "background-color: default;",
-      "color: gray;",
-      "color: default;",
-      123,
-      456,
-    ],
-  },
-]
-`;
diff --git a/logtape/config.test.ts b/logtape/config.test.ts
index 04a66d9..9f67c29 100644
--- a/logtape/config.test.ts
+++ b/logtape/config.test.ts
@@ -1,4 +1,5 @@
-import { assertEquals, assertThrows } from "@std/assert";
+import { assertEquals } from "@std/assert/assert-equals";
+import { assertThrows } from "@std/assert/assert-throws";
 import { ConfigError, configure, reset } from "./config.ts";
 import type { Filter } from "./filter.ts";
 import { LoggerImpl } from "./logger.ts";
diff --git a/logtape/filter.test.ts b/logtape/filter.test.ts
index e3e1207..71c1b00 100644
--- a/logtape/filter.test.ts
+++ b/logtape/filter.test.ts
@@ -1,9 +1,7 @@
-import {
-  assert,
-  assertFalse,
-  assertStrictEquals,
-  assertThrows,
-} from "@std/assert";
+import { assert } from "@std/assert/assert";
+import { assertFalse } from "@std/assert/assert-false";
+import { assertStrictEquals } from "@std/assert/assert-strict-equals";
+import { assertThrows } from "@std/assert/assert-throws";
 import { type Filter, getLevelFilter, toFilter } from "./filter.ts";
 import { debug, error, fatal, info, warning } from "./fixtures.ts";
 import type { LogLevel } from "./record.ts";
diff --git a/logtape/formatter.test.ts b/logtape/formatter.test.ts
index 997a3d0..8b394e5 100644
--- a/logtape/formatter.test.ts
+++ b/logtape/formatter.test.ts
@@ -1,4 +1,4 @@
-import { assertEquals } from "@std/assert";
+import { assertEquals } from "@std/assert/assert-equals";
 import { fatal, info } from "./fixtures.ts";
 import { defaultConsoleFormatter, defaultTextFormatter } from "./formatter.ts";
 
diff --git a/logtape/logger.test.ts b/logtape/logger.test.ts
index 3e523bc..7c2d60b 100644
--- a/logtape/logger.test.ts
+++ b/logtape/logger.test.ts
@@ -1,11 +1,9 @@
-import {
-  assert,
-  assertEquals,
-  assertFalse,
-  assertGreaterOrEqual,
-  assertLessOrEqual,
-  assertStrictEquals,
-} from "@std/assert";
+import { assert } from "@std/assert/assert";
+import { assertEquals } from "@std/assert/assert-equals";
+import { assertFalse } from "@std/assert/assert-false";
+import { assertGreaterOrEqual } from "@std/assert/assert-greater-or-equal";
+import { assertLessOrEqual } from "@std/assert/assert-less-or-equal";
+import { assertStrictEquals } from "@std/assert/assert-strict-equals";
 import { toFilter } from "./filter.ts";
 import { debug, error, info, warning } from "./fixtures.ts";
 import {
diff --git a/logtape/sink.test.ts b/logtape/sink.test.ts
index c732c12..5bfd8d2 100644
--- a/logtape/sink.test.ts
+++ b/logtape/sink.test.ts
@@ -1,6 +1,6 @@
-import { assertThrows } from "@std/assert";
-import { delay } from "@std/async";
-import { assertSnapshot } from "@std/testing/snapshot";
+import { assertEquals } from "@std/assert/assert-equals";
+import { assertThrows } from "@std/assert/assert-throws";
+import { delay } from "@std/async/delay";
 import makeConsoleMock from "consolemock";
 import { debug, error, fatal, info, warning } from "./fixtures.ts";
 import { defaultConsoleFormatter } from "./formatter.ts";
@@ -11,12 +11,12 @@ interface ConsoleMock extends Console {
   history(): unknown[];
 }
 
-Deno.test("getStreamSink()", async (t) => {
+Deno.test("getStreamSink()", async () => {
   let buffer: string = "";
   const decoder = new TextDecoder();
   const sink = getStreamSink(
     new WritableStream({
-      write(chunk) {
+      write(chunk: Uint8Array) {
         buffer += decoder.decode(chunk);
         return Promise.resolve();
       },
@@ -28,10 +28,19 @@ Deno.test("getStreamSink()", async (t) => {
   sink(error);
   sink(fatal);
   await delay(100);
-  await assertSnapshot(t, buffer);
+  assertEquals(
+    buffer,
+    `\
+2023-11-14 22:13:20.000 +00:00 [DBG] Hello, 123 & 456!
+2023-11-14 22:13:20.000 +00:00 [INF] Hello, 123 & 456!
+2023-11-14 22:13:20.000 +00:00 [WRN] Hello, 123 & 456!
+2023-11-14 22:13:20.000 +00:00 [ERR] Hello, 123 & 456!
+2023-11-14 22:13:20.000 +00:00 [FTL] Hello, 123 & 456!
+`,
+  );
 });
 
-Deno.test("getConsoleSink()", async (t) => {
+Deno.test("getConsoleSink()", () => {
   // @ts-ignore: consolemock is not typed
   const mock: ConsoleMock = makeConsoleMock();
   const sink = getConsoleSink(defaultConsoleFormatter, mock);
@@ -40,7 +49,63 @@ Deno.test("getConsoleSink()", async (t) => {
   sink(warning);
   sink(error);
   sink(fatal);
-  await assertSnapshot(t, mock.history());
+  assertEquals(mock.history(), [
+    {
+      DEBUG: [
+        "%cDEBUG%c %cmy-app·junk %cHello, %o & %o!",
+        "background-color: gray; color: white;",
+        "background-color: default;",
+        "color: gray;",
+        "color: default;",
+        123,
+        456,
+      ],
+    },
+    {
+      INFO: [
+        "%cINFO%c %cmy-app·junk %cHello, %o & %o!",
+        "background-color: white; color: black;",
+        "background-color: default;",
+        "color: gray;",
+        "color: default;",
+        123,
+        456,
+      ],
+    },
+    {
+      WARN: [
+        "%cWARNING%c %cmy-app·junk %cHello, %o & %o!",
+        "background-color: orange;",
+        "background-color: default;",
+        "color: gray;",
+        "color: default;",
+        123,
+        456,
+      ],
+    },
+    {
+      ERROR: [
+        "%cERROR%c %cmy-app·junk %cHello, %o & %o!",
+        "background-color: red;",
+        "background-color: default;",
+        "color: gray;",
+        "color: default;",
+        123,
+        456,
+      ],
+    },
+    {
+      ERROR: [
+        "%cFATAL%c %cmy-app·junk %cHello, %o & %o!",
+        "background-color: maroon;",
+        "background-color: default;",
+        "color: gray;",
+        "color: default;",
+        123,
+        456,
+      ],
+    },
+  ]);
 
   assertThrows(
     () => sink({ ...info, level: "invalid" as LogLevel }),