diff --git a/libraries/adb-daemon-webusb/src/device.ts b/libraries/adb-daemon-webusb/src/device.ts
index e053ca57..fcf9545e 100644
--- a/libraries/adb-daemon-webusb/src/device.ts
+++ b/libraries/adb-daemon-webusb/src/device.ts
@@ -22,6 +22,7 @@ import {
 import type { ExactReadable } from "@yume-chan/struct";
 import { EmptyUint8Array } from "@yume-chan/struct";
 
+import { DeviceBusyError as _DeviceBusyError } from "./error.js";
 import type { UsbInterfaceFilter, UsbInterfaceIdentifier } from "./utils.js";
 import { findUsbEndpoints, getSerialNumber, isErrorName } from "./utils.js";
 
@@ -254,6 +255,8 @@ export class AdbDaemonWebUsbConnection
 }
 
 export class AdbDaemonWebUsbDevice implements AdbDaemonDevice {
+    static DeviceBusyError = _DeviceBusyError;
+
     #interface: UsbInterfaceIdentifier;
     #usbManager: USB;
 
@@ -348,11 +351,5 @@ export class AdbDaemonWebUsbDevice implements AdbDaemonDevice {
 }
 
 export namespace AdbDaemonWebUsbDevice {
-    export class DeviceBusyError extends Error {
-        constructor(cause?: Error) {
-            super("The device is already in used by another program", {
-                cause,
-            });
-        }
-    }
+    export type DeviceBusyError = _DeviceBusyError;
 }
diff --git a/libraries/adb-daemon-webusb/src/error.ts b/libraries/adb-daemon-webusb/src/error.ts
new file mode 100644
index 00000000..bcfbfeb1
--- /dev/null
+++ b/libraries/adb-daemon-webusb/src/error.ts
@@ -0,0 +1,7 @@
+export class DeviceBusyError extends Error {
+    constructor(cause?: Error) {
+        super("The device is already in used by another program", {
+            cause,
+        });
+    }
+}
diff --git a/libraries/adb-daemon-webusb/src/manager.ts b/libraries/adb-daemon-webusb/src/manager.ts
index 02b0f5bd..e1b8b5a1 100644
--- a/libraries/adb-daemon-webusb/src/manager.ts
+++ b/libraries/adb-daemon-webusb/src/manager.ts
@@ -18,11 +18,11 @@ export class AdbDaemonWebUsbDeviceManager {
      *
      * May be `undefined` if current runtime does not support WebUSB.
      */
-    static readonly BROWSER =
-        typeof globalThis.navigator !== "undefined" &&
-        !!globalThis.navigator.usb
+    static readonly BROWSER = /* #__PURE__ */ (() => {
+        typeof globalThis.navigator !== "undefined" && globalThis.navigator.usb
             ? new AdbDaemonWebUsbDeviceManager(globalThis.navigator.usb)
             : undefined;
+    })();
 
     #usbManager: USB;
 
diff --git a/libraries/adb/src/server/client.ts b/libraries/adb/src/server/client.ts
index 670ab982..4713b31b 100644
--- a/libraries/adb/src/server/client.ts
+++ b/libraries/adb/src/server/client.ts
@@ -15,16 +15,27 @@ import type { AdbIncomingSocketHandler, AdbSocket, Closeable } from "../adb.js";
 import { AdbBanner } from "../banner.js";
 import type { DeviceObserver as DeviceObserverBase } from "../device-observer.js";
 import type { AdbFeature } from "../features.js";
-import { hexToNumber, sequenceEqual } from "../utils/index.js";
+import { hexToNumber } from "../utils/index.js";
 
+import {
+    MDnsCommands,
+    WirelessCommands,
+    AlreadyConnectedError as _AlreadyConnectedError,
+    NetworkError as _NetworkError,
+    UnauthorizedError as _UnauthorizedError,
+} from "./commands/index.js";
 import { AdbServerDeviceObserverOwner } from "./observer.js";
-import { AdbServerStream, FAIL } from "./stream.js";
+import { AdbServerStream } from "./stream.js";
 import { AdbServerTransport } from "./transport.js";
 
 /**
  * Client for the ADB Server.
  */
 export class AdbServerClient {
+    static NetworkError = _NetworkError;
+    static UnauthorizedError = _UnauthorizedError;
+    static AlreadyConnectedError = _AlreadyConnectedError;
+
     static parseDeviceList(value: string): AdbServerClient.Device[] {
         const devices: AdbServerClient.Device[] = [];
         for (const line of value.split("\n")) {
@@ -99,8 +110,8 @@ export class AdbServerClient {
 
     readonly connector: AdbServerClient.ServerConnector;
 
-    readonly wireless = new AdbServerClient.WirelessCommands(this);
-    readonly mDns = new AdbServerClient.MDnsCommands(this);
+    readonly wireless = new WirelessCommands(this);
+    readonly mDns = new MDnsCommands(this);
     #observerOwner = new AdbServerDeviceObserverOwner(this);
 
     constructor(connector: AdbServerClient.ServerConnector) {
@@ -537,138 +548,11 @@ export namespace AdbServerClient {
         transportId: bigint;
     }
 
-    export class NetworkError extends Error {
-        constructor(message: string) {
-            super(message);
-            this.name = "NetworkError";
-        }
-    }
-
-    export class UnauthorizedError extends Error {
-        constructor(message: string) {
-            super(message);
-            this.name = "UnauthorizedError";
-        }
-    }
-
-    export class AlreadyConnectedError extends Error {
-        constructor(message: string) {
-            super(message);
-            this.name = "AlreadyConnectedError";
-        }
-    }
-
-    export class WirelessCommands {
-        #client: AdbServerClient;
-
-        constructor(client: AdbServerClient) {
-            this.#client = client;
-        }
-
-        /**
-         * `adb pair <password> <address>`
-         */
-        async pair(address: string, password: string): Promise<void> {
-            const connection = await this.#client.createConnection(
-                `host:pair:${password}:${address}`,
-            );
-            try {
-                const response = await connection.readExactly(4);
-                // `response` is either `FAIL`, or 4 hex digits for length of the string
-                if (sequenceEqual(response, FAIL)) {
-                    throw new Error(await connection.readString());
-                }
-                const length = hexToNumber(response);
-                // Ignore the string as it's always `Successful ...`
-                await connection.readExactly(length);
-            } finally {
-                await connection.dispose();
-            }
-        }
-
-        /**
-         * `adb connect <address>`
-         */
-        async connect(address: string): Promise<void> {
-            const connection = await this.#client.createConnection(
-                `host:connect:${address}`,
-            );
-            try {
-                const response = await connection.readString();
-                switch (response) {
-                    case `already connected to ${address}`:
-                        throw new AdbServerClient.AlreadyConnectedError(
-                            response,
-                        );
-                    case `failed to connect to ${address}`: // `adb pair` mode not authorized
-                    case `failed to authenticate to ${address}`: // `adb tcpip` mode not authorized
-                        throw new AdbServerClient.UnauthorizedError(response);
-                    case `connected to ${address}`:
-                        return;
-                    default:
-                        throw new AdbServerClient.NetworkError(response);
-                }
-            } finally {
-                await connection.dispose();
-            }
-        }
-
-        /**
-         * `adb disconnect <address>`
-         */
-        async disconnect(address: string): Promise<void> {
-            const connection = await this.#client.createConnection(
-                `host:disconnect:${address}`,
-            );
-            try {
-                await connection.readString();
-            } finally {
-                await connection.dispose();
-            }
-        }
-    }
-
-    export class MDnsCommands {
-        #client: AdbServerClient;
-
-        constructor(client: AdbServerClient) {
-            this.#client = client;
-        }
-
-        async check() {
-            const connection =
-                await this.#client.createConnection("host:mdns:check");
-            try {
-                const response = await connection.readString();
-                return !response.startsWith("ERROR:");
-            } finally {
-                await connection.dispose();
-            }
-        }
-
-        async getServices() {
-            const connection =
-                await this.#client.createConnection("host:mdns:services");
-            try {
-                const response = await connection.readString();
-                return response
-                    .split("\n")
-                    .filter(Boolean)
-                    .map((line) => {
-                        const parts = line.split("\t");
-                        return {
-                            name: parts[0]!,
-                            service: parts[1]!,
-                            address: parts[2]!,
-                        };
-                    });
-            } finally {
-                await connection.dispose();
-            }
-        }
-    }
-
     export interface DeviceObserver extends DeviceObserverBase<Device> {
         onError: Event<Error>;
     }
+
+    export type NetworkError = _NetworkError;
+    export type UnauthorizedError = _UnauthorizedError;
+    export type AlreadyConnectedError = _AlreadyConnectedError;
 }
diff --git a/libraries/adb/src/server/commands/index.ts b/libraries/adb/src/server/commands/index.ts
new file mode 100644
index 00000000..f2dcf9b8
--- /dev/null
+++ b/libraries/adb/src/server/commands/index.ts
@@ -0,0 +1,2 @@
+export * from "./m-dns.js";
+export * from "./wireless.js";
diff --git a/libraries/adb/src/server/commands/m-dns.ts b/libraries/adb/src/server/commands/m-dns.ts
new file mode 100644
index 00000000..7c1255a7
--- /dev/null
+++ b/libraries/adb/src/server/commands/m-dns.ts
@@ -0,0 +1,43 @@
+// cspell:ignore mdns
+
+import type { AdbServerClient } from "../client.js";
+
+export class MDnsCommands {
+    #client: AdbServerClient;
+
+    constructor(client: AdbServerClient) {
+        this.#client = client;
+    }
+
+    async check() {
+        const connection =
+            await this.#client.createConnection("host:mdns:check");
+        try {
+            const response = await connection.readString();
+            return !response.startsWith("ERROR:");
+        } finally {
+            await connection.dispose();
+        }
+    }
+
+    async getServices() {
+        const connection =
+            await this.#client.createConnection("host:mdns:services");
+        try {
+            const response = await connection.readString();
+            return response
+                .split("\n")
+                .filter(Boolean)
+                .map((line) => {
+                    const parts = line.split("\t");
+                    return {
+                        name: parts[0]!,
+                        service: parts[1]!,
+                        address: parts[2]!,
+                    };
+                });
+        } finally {
+            await connection.dispose();
+        }
+    }
+}
diff --git a/libraries/adb/src/server/commands/wireless.ts b/libraries/adb/src/server/commands/wireless.ts
new file mode 100644
index 00000000..16ce8851
--- /dev/null
+++ b/libraries/adb/src/server/commands/wireless.ts
@@ -0,0 +1,95 @@
+// cspell:ignore tport
+
+import { hexToNumber, sequenceEqual } from "../../utils/index.js";
+import type { AdbServerClient } from "../client.js";
+
+import { FAIL } from "../stream.js";
+
+export class NetworkError extends Error {
+    constructor(message: string) {
+        super(message);
+        this.name = "NetworkError";
+    }
+}
+
+export class UnauthorizedError extends Error {
+    constructor(message: string) {
+        super(message);
+        this.name = "UnauthorizedError";
+    }
+}
+
+export class AlreadyConnectedError extends Error {
+    constructor(message: string) {
+        super(message);
+        this.name = "AlreadyConnectedError";
+    }
+}
+
+export class WirelessCommands {
+    #client: AdbServerClient;
+
+    constructor(client: AdbServerClient) {
+        this.#client = client;
+    }
+
+    /**
+     * `adb pair <password> <address>`
+     */
+    async pair(address: string, password: string): Promise<void> {
+        const connection = await this.#client.createConnection(
+            `host:pair:${password}:${address}`,
+        );
+        try {
+            const response = await connection.readExactly(4);
+            // `response` is either `FAIL`, or 4 hex digits for length of the string
+            if (sequenceEqual(response, FAIL)) {
+                throw new Error(await connection.readString());
+            }
+            const length = hexToNumber(response);
+            // Ignore the string as it's always `Successful ...`
+            await connection.readExactly(length);
+        } finally {
+            await connection.dispose();
+        }
+    }
+
+    /**
+     * `adb connect <address>`
+     */
+    async connect(address: string): Promise<void> {
+        const connection = await this.#client.createConnection(
+            `host:connect:${address}`,
+        );
+        try {
+            const response = await connection.readString();
+            switch (response) {
+                case `already connected to ${address}`:
+                    throw new AlreadyConnectedError(response);
+                case `failed to connect to ${address}`: // `adb pair` mode not authorized
+                case `failed to authenticate to ${address}`: // `adb tcpip` mode not authorized
+                    throw new UnauthorizedError(response);
+                case `connected to ${address}`:
+                    return;
+                default:
+                    throw new NetworkError(response);
+            }
+        } finally {
+            await connection.dispose();
+        }
+    }
+
+    /**
+     * `adb disconnect <address>`
+     */
+    async disconnect(address: string): Promise<void> {
+        const connection = await this.#client.createConnection(
+            `host:disconnect:${address}`,
+        );
+        try {
+            await connection.readString();
+        } finally {
+            await connection.dispose();
+        }
+    }
+}
diff --git a/libraries/adb/src/server/transport.ts b/libraries/adb/src/server/transport.ts
index 61691c29..f4375748 100644
--- a/libraries/adb/src/server/transport.ts
+++ b/libraries/adb/src/server/transport.ts
@@ -10,26 +10,27 @@ import { AdbFeature } from "../features.js";
 
 import type { AdbServerClient } from "./client.js";
 
-export const ADB_SERVER_DEFAULT_FEATURES = [
-    AdbFeature.ShellV2,
-    AdbFeature.Cmd,
-    AdbFeature.StatV2,
-    AdbFeature.ListV2,
-    AdbFeature.FixedPushMkdir,
-    "apex",
-    AdbFeature.Abb,
-    // only tells the client the symlink timestamp issue in `adb push --sync` has been fixed.
-    // No special handling required.
-    "fixed_push_symlink_timestamp",
-    AdbFeature.AbbExec,
-    "remount_shell",
-    "track_app",
-    AdbFeature.SendReceiveV2,
-    "sendrecv_v2_brotli",
-    "sendrecv_v2_lz4",
-    "sendrecv_v2_zstd",
-    "sendrecv_v2_dry_run_send",
-] as AdbFeature[];
+export const ADB_SERVER_DEFAULT_FEATURES = /* #__PURE__ */ (() =>
+    [
+        AdbFeature.ShellV2,
+        AdbFeature.Cmd,
+        AdbFeature.StatV2,
+        AdbFeature.ListV2,
+        AdbFeature.FixedPushMkdir,
+        "apex",
+        AdbFeature.Abb,
+        // only tells the client the symlink timestamp issue in `adb push --sync` has been fixed.
+        // No special handling required.
+        "fixed_push_symlink_timestamp",
+        AdbFeature.AbbExec,
+        "remount_shell",
+        "track_app",
+        AdbFeature.SendReceiveV2,
+        "sendrecv_v2_brotli",
+        "sendrecv_v2_lz4",
+        "sendrecv_v2_zstd",
+        "sendrecv_v2_dry_run_send",
+    ] as AdbFeature[])();
 
 export class AdbServerTransport implements AdbTransport {
     #client: AdbServerClient;
diff --git a/libraries/android-bin/src/settings.ts b/libraries/android-bin/src/settings.ts
index a9320653..a64b0ffe 100644
--- a/libraries/android-bin/src/settings.ts
+++ b/libraries/android-bin/src/settings.ts
@@ -6,11 +6,14 @@ import type { SingleUser } from "./utils.js";
 
 export type SettingsNamespace = "system" | "secure" | "global";
 
-export enum SettingsResetMode {
-    UntrustedDefaults = "untrusted_defaults",
-    UntrustedClear = "untrusted_clear",
-    TrustedDefaults = "trusted_defaults",
-}
+export const SettingsResetMode = {
+    UntrustedDefaults: "untrusted_defaults",
+    UntrustedClear: "untrusted_clear",
+    TrustedDefaults: "trusted_defaults",
+} as const;
+
+export type SettingsResetMode =
+    (typeof SettingsResetMode)[keyof typeof SettingsResetMode];
 
 export interface SettingsOptions {
     user?: SingleUser;
diff --git a/libraries/struct/src/buffer.ts b/libraries/struct/src/buffer.ts
index 683c1074..4e1f05f9 100644
--- a/libraries/struct/src/buffer.ts
+++ b/libraries/struct/src/buffer.ts
@@ -42,14 +42,16 @@ export interface BufferLike {
 
 export const EmptyUint8Array = new Uint8Array(0);
 
-export const buffer: BufferLike = function (
+// Prettier will move the annotation and make it invalid
+// prettier-ignore
+export const buffer: BufferLike = (/* #__NO_SIDE_EFFECTS__ */ (
     lengthOrField:
         | string
         | number
         | Field<number, never, unknown>
         | BufferLengthConverter<string, unknown>,
     converter?: Converter<Uint8Array, unknown>,
-): Field<unknown, string, Record<string, unknown>> {
+): Field<unknown, string, Record<string, unknown>> => {
     if (typeof lengthOrField === "number") {
         if (converter) {
             if (lengthOrField === 0) {
@@ -257,4 +259,4 @@ export const buffer: BufferLike = function (
             return reader.readExactly(length);
         },
     };
-} as never;
+}) as never;
diff --git a/libraries/struct/src/number.ts b/libraries/struct/src/number.ts
index 4f8df5ad..8514a05d 100644
--- a/libraries/struct/src/number.ts
+++ b/libraries/struct/src/number.ts
@@ -23,18 +23,19 @@ export interface NumberField<T> extends Field<T, never, never> {
 
 /* #__NO_SIDE_EFFECTS__ */
 function factory<T>(
+    fn: NumberField<T>,
     size: number,
     serialize: Field<T, never, never>["serialize"],
     deserialize: Field<T, never, never>["deserialize"],
-): NumberField<T> {
-    const result = () => result;
-    result.size = size;
-    result.serialize = serialize;
-    result.deserialize = deserialize;
-    return result as never;
+) {
+    fn.size = size;
+    fn.serialize = serialize;
+    fn.deserialize = deserialize;
 }
 
-export const u8 = factory<number>(
+export const u8: NumberField<number> = (() => u8) as never;
+factory(
+    u8,
     1,
     (value, { buffer, index }) => {
         buffer[index] = value;
@@ -45,7 +46,9 @@ export const u8 = factory<number>(
     }),
 );
 
-export const s8 = factory<number>(
+export const s8: NumberField<number> = (() => s8) as never;
+factory(
+    s8,
     1,
     (value, { buffer, index }) => {
         buffer[index] = value;
@@ -56,7 +59,9 @@ export const s8 = factory<number>(
     }),
 );
 
-export const u16 = factory<number>(
+export const u16: NumberField<number> = (() => u16) as never;
+factory(
+    u16,
     2,
     (value, { buffer, index, littleEndian }) => {
         setUint16(buffer, index, value, littleEndian);
@@ -67,7 +72,9 @@ export const u16 = factory<number>(
     }),
 );
 
-export const s16 = factory<number>(
+export const s16: NumberField<number> = (() => u16) as never;
+factory(
+    s16,
     2,
     (value, { buffer, index, littleEndian }) => {
         setInt16(buffer, index, value, littleEndian);
@@ -78,7 +85,9 @@ export const s16 = factory<number>(
     }),
 );
 
-export const u32 = factory<number>(
+export const u32: NumberField<number> = (() => u32) as never;
+factory(
+    u32,
     4,
     (value, { buffer, index, littleEndian }) => {
         setUint32(buffer, index, value, littleEndian);
@@ -89,7 +98,9 @@ export const u32 = factory<number>(
     }),
 );
 
-export const s32 = factory<number>(
+export const s32: NumberField<number> = (() => s32) as never;
+factory(
+    s32,
     4,
     (value, { buffer, index, littleEndian }) => {
         setInt32(buffer, index, value, littleEndian);
@@ -100,7 +111,9 @@ export const s32 = factory<number>(
     }),
 );
 
-export const u64 = factory<bigint>(
+export const u64: NumberField<bigint> = (() => u64) as never;
+factory(
+    u64,
     8,
     (value, { buffer, index, littleEndian }) => {
         setUint64(buffer, index, value, littleEndian);
@@ -111,7 +124,9 @@ export const u64 = factory<bigint>(
     }),
 );
 
-export const s64 = factory<bigint>(
+export const s64: NumberField<bigint> = (() => u64) as never;
+factory(
+    s64,
     8,
     (value, { buffer, index, littleEndian }) => {
         setInt64(buffer, index, value, littleEndian);
diff --git a/libraries/struct/src/string.ts b/libraries/struct/src/string.ts
index 74aab4e6..47be7fa7 100644
--- a/libraries/struct/src/string.ts
+++ b/libraries/struct/src/string.ts
@@ -25,19 +25,17 @@ export interface String {
     ): Field<string, KOmitInit, KS>;
 }
 
-// Rollup doesn't support `/* #__NO_SIDE_EFFECTS__ */ export const a = () => {}
-/* #__NO_SIDE_EFFECTS__ */
-function _string(
+// Prettier will move the annotation and make it invalid
+// prettier-ignore
+export const string: String = (/* #__NO_SIDE_EFFECTS__ */ (
     lengthOrField: string | number | BufferLengthConverter<string, unknown>,
 ): Field<string, string, Record<string, unknown>> & {
     as: <T>(infer: T) => Field<T, string, Record<string, unknown>>;
-} {
+} => {
     const field = buffer(lengthOrField as never, {
         convert: decodeUtf8,
         back: encodeUtf8,
     });
     (field as never as { as: unknown }).as = () => field;
     return field as never;
-}
-
-export const string: String = _string as never;
+}) as never;