Initial commit

.gitignore

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+.idea/
+.kotlin/
+build/
+.gradle/

README.md

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+# Kotlin cloudflare worker
+
+A library to running kotlin/js on cloudflare worker.
+
+# Get started
+
+## Setup
+
+> `kotlinx.coroutines` is required
+
+```kotlin
+plugins {
+    kotlin("multiplatform") version "2.2.21"
+}
+
+repositories {
+    mavenCentral()
+    maven("https://repo.maven.rtast.cn/releases")
+}
+```
+
+```kotlin
+// to get latest version of this lib, go to 
+// https://next.pkg.rtast.cn/#/releases/cn/rtast/kotlin-cfworker/kotlin-cloudflare-worker/
+implementation("cn.rtast.kotlin-cfworker:kotlin-cloudflare-worker:1.0.1")
+```
+
+## Run app
+
+```kotlin
+kotlin {
+    js(IR) {
+        nodejs {
+            outputModuleName = "kotlin-cloudflare-worker"
+            binaries.executable()
+        }
+    }
+}
+```
+
+> Minimal hello world app
+
+```kotlin
+/**
+ * DO NOT EDIT THIS FUNCTION
+ */
+fun main() {
+    @Suppress("unused_expression")
+    val eventListener = EventListener { event ->
+        val dyn = event.asDynamic()
+        event.asDynamic().respondWith(handleRequest(dyn.request as Request))
+        Unit
+    }
+    js("addEventListener('fetch', eventListener)")
+}
+
+@JsExport
+fun handleRequest(request: Request): Promise<Response> = GlobalScope.promise {
+    val server = WorkerApplication().apply {
+        route("/") {
+            respondText("Hello kotlin cloudflare worker")
+        }
+    }
+    return@promise server.handle(request)
+}
+
+```
+
+> Before run worker locally, you need to install wrangler and login
+
+First, create `wrangler.toml` in your root project and configure it
+
+```toml
+name = "kotlin-cloudflare-worker"  # any name you want
+account_id = "<your account id>"
+workers_dev = false
+preview_urls = false
+compatibility_date = "2022-08-11"
+main = "kotlin-cloudflare-worker.js"  # Set this value same as `outputModuleName`
+```
+
+Then run gradle task `gradlew compileProductionExecutableKotlinJs`,
+copy wrangler.toml into `build/compileSync/js/main/productionExecutable/kotlin`,
+and run `wrangler dev` command in `build/compileSync/js/main/productionExecutable/kotlin`,
+
+## Deploy
+
+Run gradle task, copy wrangler.toml, but use `wrangler deploy` to deploy to cloudflare worker
+
+# Note
+
+JavaScript uses a single-threaded execution model. All asynchronous work is ultimately driven by the event loop (
+including Kotlin coroutines on JS).
+
+Therefore, DO NOT create a CoroutineScope(Dispatchers.Default) or launch CPU-bound coroutines, as there is no real
+background thread on JS targets.
+
+All coroutines run on same event loop thread, and all coroutines not in same event loop will be dropped.
+
+Example:
+
+```kotlin
+// DO NOT DO THIS
+val scope = CoroutineScope(Dispatcher.DEFAULT)
+
+fun blockingFunction() {
+    scope.launch {
+        // this block will never execute
+    }
+}
+
+// Instead of do this
+
+fun main() {
+    @Suppress("unused_expression")
+    val eventListener = EventListener { event ->
+        val dyn = event.asDynamic()
+        event.asDynamic().respondWith(handleRequest(dyn.request as Request))
+        Unit
+    }
+    js("addEventListener('fetch', eventListener)")
+}
+
+@JsExport
+fun handleRequest(request: Request): Promise<Response> = GlobalScope.promise {
+    return Promise.resolve(Response("Hello"))
+}
+```
+
+# Http client
+
+Cloudflare worker is not a standard nodejs environment, do http requests must
+use fetch api(not `window.fetch`, this is browser api), use `cn.rtast.cfworker.client.fetch` instead,
+
+# ByteArray and ByteBuffer cast
+
+Kotlin cloudflare worker provided api to mutual conversion,
+
+```kotlin
+import cn.rtast.cfworker.util.toByteArray
+import cn.rtast.cfworker.util.toArrayBuffer
+
+val bb: ByteBuffer = ...
+// convert ByteBuffer to ByteArray
+val ba: ByteArray = bb.toByteArray()
+
+// convert ByteArray to ByteBuffer
+val bb2: ByteBuffer = ba.toArrayBuffer()
+```
+
+# Real instance
+
+https://repo.maven.rtast.cn
+
+> Yes, it the maven repository but built with kotlin/js with this lib

build.gradle.kts

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+plugins {
+    kotlin("multiplatform") version "2.2.21"
+    id("maven-publish")
+}
+
+group = "cn.rtast.kotlin-cfworker"
+version = "1.0.1"
+
+repositories {
+    mavenCentral()
+}
+
+kotlin {
+    explicitApi()
+    js(IR) { nodejs { binaries.executable() } }
+
+    sourceSets {
+        jsMain.dependencies {
+            implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.10.2")
+        }
+
+        commonTest.dependencies {
+            implementation(kotlin("test"))
+        }
+    }
+}
+
+publishing {
+    repositories {
+        maven("https://repo.maven.rtast.cn/releases") {
+            credentials {
+                username = "RTAkland"
+                password = System.getenv("PUBLISH_TOKEN")
+            }
+        }
+    }
+}

gradle.properties

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+kotlin.code.style=official

gradle/wrapper/gradle-wrapper.properties

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+#Sat Jan 03 02:49:25 CST 2026
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

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+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

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+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle.kts

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+rootProject.name = "kotlin-cloudflare-worker"

src/jsMain/kotlin/cn/rtast/cfworker/CORS.kt

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+/*
+ * Copyright © 2025 RTAkland
+ * Date: 2025/12/28 17:29
+ * Open Source Under Apache-2.0 License
+ * https://www.apache.org/licenses/LICENSE-2.0
+ */
+
+
+package cn.rtast.cfworker
+
+import org.w3c.fetch.ResponseInit
+
+/**
+ * Auto add cors response headers
+ */
+@Suppress("FunctionName")
+internal fun WorkerApplication._addCorsHeaders(
+    init: ResponseInit,
+    origin: String = "*",
+    allowedMethods: Set<HttpMethod> = setOf(
+        HttpMethod.GET, HttpMethod.POST,
+        HttpMethod.DELETE, HttpMethod.DELETE,
+        HttpMethod.OPTIONS
+    ),
+): ResponseInit {
+    val headers = if (this.corsConfig.enabled) {
+        val corsHeaders = init.headers ?: js("{}")
+        corsHeaders["Access-Control-Allow-Origin"] = origin
+        corsHeaders["Access-Control-Allow-Methods"] = allowedMethods.joinToString(", ")
+        corsHeaders["Access-Control-Allow-Headers"] = "Content-Type, Authorization"
+        corsHeaders["Access-Control-Max-Age"] = "86400"
+        corsHeaders
+    } else init.headers
+    return ResponseInit(
+        headers = headers,
+        status = init.status,
+        statusText = init.statusText
+    )
+}

src/jsMain/kotlin/cn/rtast/cfworker/HttpMethod.kt

@@ -0,0 +1,38 @@
+/*
+ * Copyright © 2025 RTAkland
+ * Date: 2025/12/28 01:02
+ * Open Source Under Apache-2.0 License
+ * https://www.apache.org/licenses/LICENSE-2.0
+ */
+
+
+package cn.rtast.cfworker
+
+import org.w3c.fetch.Request
+
+/**
+ * Common http method
+ * https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods
+ */
+public enum class HttpMethod {
+    GET,
+    POST,
+    PUT,
+    DELETE,
+    PATCH,
+    HEAD,
+    OPTIONS,
+    TRACE,
+    CONNECT;
+
+    public companion object {
+        public fun fromString(method: String): HttpMethod? =
+            entries.firstOrNull { it.name.equals(method, ignoreCase = true) }
+    }
+}
+
+/**
+ * Get parsed http method, if it's not a standard http method return GET
+ */
+public val Request.httpMethod: HttpMethod
+    get() = HttpMethod.fromString(this.method) ?: HttpMethod.GET

src/jsMain/kotlin/cn/rtast/cfworker/WorkerApplication.kt

@@ -0,0 +1,77 @@
+/*
+ * Copyright © 2025 RTAkland
+ * Date: 2025/12/28 01:03
+ * Open Source Under Apache-2.0 License
+ * https://www.apache.org/licenses/LICENSE-2.0
+ */
+
+
+package cn.rtast.cfworker
+
+import cn.rtast.cfworker.auth.AuthResult
+import cn.rtast.cfworker.auth.packBasicCredential
+import cn.rtast.cfworker.auth.packBearerCredential
+import cn.rtast.cfworker.auth.provider.BasicAuthenticator
+import cn.rtast.cfworker.auth.provider.BearerAuthenticator
+import cn.rtast.cfworker.config.CORSConfig
+import cn.rtast.cfworker.response.respondEmpty
+import cn.rtast.cfworker.response.respondText
+import cn.rtast.cfworker.route.type.AbstractRoute
+import cn.rtast.cfworker.route.type.RegexRoute
+import cn.rtast.cfworker.route.type.StringRoute
+import cn.rtast.cfworker.util.decodeBase64String
+import org.w3c.dom.url.URL
+import org.w3c.fetch.Request
+import org.w3c.fetch.Response
+
+/**
+ * Kotlin cloudflare worker logic entrypoint class
+ */
+public class WorkerApplication(
+    public val corsConfig: CORSConfig = CORSConfig(),
+) {
+    internal val routes: MutableList<AbstractRoute> = mutableListOf()
+
+    public suspend fun handle(request: Request): Response {
+        val url = URL(request.url)
+        val path = url.pathname
+        val method = HttpMethod.fromString(request.method) ?: HttpMethod.GET
+        if (method == HttpMethod.OPTIONS && corsConfig.enabled) return respondEmpty()
+        val matchedRoutes = routes.filter {
+            when (it) {
+                is StringRoute -> it.path == path
+                is RegexRoute -> it.path.matches(path)
+                else -> false
+            }
+        }
+
+        if (matchedRoutes.isEmpty()) return respondText("Not Found", 404)
+        val methodMatchedRoute = matchedRoutes.firstOrNull { method in it.methods }
+        if (methodMatchedRoute == null) {
+            val allowMethods = matchedRoutes.flatMap { it.methods }.distinct().joinToString(", ")
+            val headers: dynamic = js("{}")
+            headers["Allow"] = allowMethods
+            return respondText("Method Not Allowed", 405)
+        }
+
+        val auth = methodMatchedRoute.authenticator
+        val responsePromise = if (auth != null) {
+            val credential = when (auth) {
+                is BasicAuthenticator -> request.headers.get("authorization")
+                    ?.removePrefix("Basic ")
+                    ?.decodeBase64String
+                    ?.packBasicCredential()
+
+                is BearerAuthenticator -> request.headers.get("authorization")
+                    ?.removePrefix("Bearer ")
+                    ?.packBearerCredential()
+            }
+            when (auth.authenticate(request, credential)) {
+                AuthResult.OK -> methodMatchedRoute.handle(request)
+                AuthResult.UNAUTHORIZED -> respondText("UNAUTHORIZED", 401)
+                AuthResult.FORBIDDEN -> respondText("FORBIDDEN", 403)
+            }
+        } else methodMatchedRoute.handle(request)
+        return responsePromise
+    }
+}

src/jsMain/kotlin/cn/rtast/cfworker/auth/AuthResult.kt

@@ -0,0 +1,13 @@
+/*
+ * Copyright © 2025 RTAkland
+ * Date: 2025/12/25 11:41
+ * Open Source Under Apache-2.0 License
+ * https://www.apache.org/licenses/LICENSE-2.0
+ */
+
+
+package cn.rtast.cfworker.auth
+
+public enum class AuthResult {
+    OK, UNAUTHORIZED, FORBIDDEN
+}

src/jsMain/kotlin/cn/rtast/cfworker/auth/AuthUtil.kt

@@ -0,0 +1,18 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/1/3
+ */
+
+
+package cn.rtast.cfworker.auth
+
+import cn.rtast.cfworker.auth.credentials.BasicCredential
+import cn.rtast.cfworker.auth.credentials.BearerCredential
+
+internal fun String.packBasicCredential(): BasicCredential {
+    val parts = this.split(":")
+    return BasicCredential(parts.first(), parts.last())
+}
+
+internal fun String.packBearerCredential(): BearerCredential = BearerCredential(this)

src/jsMain/kotlin/cn/rtast/cfworker/auth/credentials/BasicCredential.kt

@@ -0,0 +1,16 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/1/3
+ */
+
+
+package cn.rtast.cfworker.auth.credentials
+
+/**
+ * Basic credential
+ */
+public data class BasicCredential(
+    val username: String,
+    val password: String,
+) : HttpCredential

src/jsMain/kotlin/cn/rtast/cfworker/auth/credentials/BearerCredential.kt

@@ -0,0 +1,15 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/1/3
+ */
+
+
+package cn.rtast.cfworker.auth.credentials
+
+/**
+ * Bearer credential
+ */
+public data class BearerCredential(
+    val token: String,
+) : HttpCredential

src/jsMain/kotlin/cn/rtast/cfworker/auth/credentials/HttpCredential.kt

@@ -0,0 +1,11 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/1/3
+ */
+
+
+package cn.rtast.cfworker.auth.credentials
+
+@Suppress("CLASSNAME")
+public sealed interface HttpCredential

src/jsMain/kotlin/cn/rtast/cfworker/auth/provider/Authenticator.kt

@@ -0,0 +1,13 @@
+package cn.rtast.cfworker.auth.provider
+
+import cn.rtast.cfworker.auth.AuthResult
+import cn.rtast.cfworker.auth.credentials.HttpCredential
+import org.w3c.fetch.Request
+
+/**
+ * An interface for authenticating
+ * It's sealed
+ */
+public sealed interface Authenticator<in C : HttpCredential> {
+    public suspend fun authenticate(request: Request, credential: C?): AuthResult
+}

src/jsMain/kotlin/cn/rtast/cfworker/auth/provider/BasicAuthenticator.kt

@@ -0,0 +1,13 @@
+package cn.rtast.cfworker.auth.provider
+
+import cn.rtast.cfworker.auth.AuthResult
+import cn.rtast.cfworker.auth.credentials.BasicCredential
+import org.w3c.fetch.Request
+
+/**
+ * Basic auth provider
+ * Schema: Basic <Base64-encoded username:password string>
+ */
+public fun interface BasicAuthenticator : Authenticator<BasicCredential> {
+    override suspend fun authenticate(request: Request, credential: BasicCredential?): AuthResult
+}

src/jsMain/kotlin/cn/rtast/cfworker/auth/provider/BearerAuthenticator.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/1/3
+ */
+
+
+package cn.rtast.cfworker.auth.provider
+
+import cn.rtast.cfworker.auth.AuthResult
+import cn.rtast.cfworker.auth.credentials.BearerCredential
+import org.w3c.fetch.Request
+
+/**
+ * Bearer token auth provider
+ * Schema: Bearer <String>
+ */
+public fun interface BearerAuthenticator : Authenticator<BearerCredential> {
+    override suspend fun authenticate(request: Request, credential: BearerCredential?): AuthResult
+}

src/jsMain/kotlin/cn/rtast/cfworker/client/fetch.kt

@@ -0,0 +1,17 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/1/3
+ */
+
+
+package cn.rtast.cfworker.client
+
+import org.w3c.fetch.RequestInit
+import org.w3c.fetch.Response
+import kotlin.js.Promise
+
+public external fun fetch(
+    input: String,
+    init: RequestInit = definedExternally,
+): Promise<Response>

src/jsMain/kotlin/cn/rtast/cfworker/config/CORSConfig.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/1/3
+ */
+
+
+package cn.rtast.cfworker.config
+
+import cn.rtast.cfworker.HttpMethod
+
+public class CORSConfig {
+    /**
+     * enabled cors agent
+     */
+    public var enabled: Boolean = true
+
+    /**
+     * Allowed origin
+     */
+    public var origin: String = "*"
+
+    /**
+     * Allowed methods
+     */
+    public var allowedMethods: Set<HttpMethod> = setOf(
+        HttpMethod.GET, HttpMethod.POST,
+        HttpMethod.DELETE, HttpMethod.DELETE,
+        HttpMethod.OPTIONS
+    )
+}

src/jsMain/kotlin/cn/rtast/cfworker/main.kt

@@ -0,0 +1,44 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/1/3
+ */
+
+
+/**
+ * This file is for internally use
+ */
+
+@file:OptIn(DelicateCoroutinesApi::class, ExperimentalJsExport::class)
+
+package cn.rtast.cfworker
+
+import cn.rtast.cfworker.response.respondText
+import cn.rtast.cfworker.route.route
+import kotlinx.coroutines.DelicateCoroutinesApi
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.promise
+import org.w3c.dom.events.EventListener
+import org.w3c.fetch.Request
+import org.w3c.fetch.Response
+import kotlin.js.Promise
+
+public fun main() {
+    @Suppress("unused_expression")
+    val eventListener = EventListener { event ->
+        val dyn = event.asDynamic()
+        event.asDynamic().respondWith(handleRequest(dyn.request as Request))
+        Unit
+    }
+    js("addEventListener('fetch', eventListener)")
+}
+
+@JsExport
+public fun handleRequest(request: Request): Promise<Response> = GlobalScope.promise {
+    val server = WorkerApplication().apply {
+        route("/") {
+            respondText("Hello kotlin cloudflare worker")
+        }
+    }
+    return@promise server.handle(request)
+}

src/jsMain/kotlin/cn/rtast/cfworker/response/ResponseUtil.kt

@@ -0,0 +1,87 @@
+/*
+ * Copyright © 2025 RTAkland
+ * Date: 2025/12/28 01:17
+ * Open Source Under Apache-2.0 License
+ * https://www.apache.org/licenses/LICENSE-2.0
+ */
+
+@file:Suppress("unused")
+
+package cn.rtast.cfworker.response
+
+import cn.rtast.cfworker.WorkerApplication
+import cn.rtast.cfworker._addCorsHeaders
+import org.khronos.webgl.Uint8Array
+import org.w3c.fetch.Response
+import org.w3c.fetch.ResponseInit
+
+public fun WorkerApplication.respondBytes(
+    bytes: ByteArray,
+    status: Int = 200,
+    contentType: String? = null,
+    headers: Map<String, String> = mapOf(),
+): Response {
+    val respHeaders: dynamic = js("{}")
+    headers.forEach { respHeaders[it.key] = it.value }
+    respHeaders["Content-Type"] = contentType ?: "application/octet-stream"
+    return Response(
+        Uint8Array(bytes.toTypedArray()),
+        _addCorsHeaders(
+            ResponseInit(
+                status = status.toShort(),
+                headers = respHeaders
+            )
+        )
+    )
+}
+
+public fun WorkerApplication.respondStream(
+    stream: dynamic,
+    status: Int = 200,
+    headers: Map<String, String> = mapOf(),
+): Response {
+    val respHeaders: dynamic = js("{}")
+    headers.forEach { respHeaders[it.key] = it.value }
+    return Response(
+        stream,
+        _addCorsHeaders(
+            ResponseInit(
+                status = status.toShort(),
+                headers = respHeaders
+            )
+        )
+    )
+}
+
+public fun WorkerApplication.respondEmpty(
+    status: Int = 204,
+    headers: Map<String, String> = mapOf(),
+): Response {
+    val respHeaders: dynamic = js("{}")
+    headers.forEach { respHeaders[it.key] = it.value }
+    return Response(null, _addCorsHeaders(ResponseInit(status = status.toShort(), headers = respHeaders)))
+}
+
+public fun WorkerApplication.respondText(
+    content: String,
+    status: Int = 200,
+    headers: Map<String, String> = mapOf(),
+): Response {
+    val respHeaders: dynamic = js("{}")
+    headers.forEach { respHeaders[it.key] = it.value }
+    return Response(content, _addCorsHeaders(ResponseInit(status = status.toShort(), headers = respHeaders)))
+}
+
+public fun WorkerApplication.respondRedirect(
+    location: String,
+    status: Int = 302,
+    headers: Map<String, String> = mapOf(),
+): Response {
+    val respHeaders: dynamic = js("{}")
+    headers.forEach { respHeaders[it.key] = it.value }
+    respHeaders["Location"] = location
+    return Response(
+        "Redirecting to $location",
+        _addCorsHeaders(ResponseInit(status = status.toShort(), headers = respHeaders))
+    )
+}

src/jsMain/kotlin/cn/rtast/cfworker/route/RouteHandler.kt

@@ -0,0 +1,14 @@
+/*
+ * Copyright © 2025 RTAkland
+ * Date: 2025/12/25 11:43
+ * Open Source Under Apache-2.0 License
+ * https://www.apache.org/licenses/LICENSE-2.0
+ */
+
+
+package cn.rtast.cfworker.route
+
+import org.w3c.fetch.Request
+import org.w3c.fetch.Response
+
+public typealias Handler = suspend (Request) -> Response

src/jsMain/kotlin/cn/rtast/cfworker/route/RouteUtil.kt

@@ -0,0 +1,44 @@
+/*
+ * Copyright © 2025 RTAkland
+ * Date: 2025/12/25 10:49
+ * Open Source Under Apache-2.0 License
+ * https://www.apache.org/licenses/LICENSE-2.0
+ */
+
+@file:Suppress("unused")
+
+package cn.rtast.cfworker.route
+
+import cn.rtast.cfworker.HttpMethod
+import cn.rtast.cfworker.WorkerApplication
+import cn.rtast.cfworker.auth.credentials.HttpCredential
+import cn.rtast.cfworker.auth.provider.Authenticator
+import cn.rtast.cfworker.route.type.RegexRoute
+import cn.rtast.cfworker.route.type.RouteType
+import cn.rtast.cfworker.route.type.StringRoute
+
+public fun WorkerApplication.route(
+    path: Regex,
+    methods: Set<HttpMethod> = HttpMethod.entries.toSet(),
+    block: Handler,
+): Unit = run { routes.add(RegexRoute(path, block, methods)) }
+
+public fun WorkerApplication.route(
+    path: String,
+    methods: Set<HttpMethod> = HttpMethod.entries.toSet(),
+    block: Handler,
+): Unit = run { routes.add(StringRoute(path, block, methods)) }
+
+public fun WorkerApplication.route(
+    path: String,
+    methods: Set<HttpMethod> = HttpMethod.entries.toSet(),
+    authenticator: Authenticator<HttpCredential>,
+    block: Handler,
+): Unit = run { routes.add(StringRoute(path, block, methods, type = RouteType.String, authenticator = authenticator)) }
+
+public fun WorkerApplication.route(
+    path: Regex,
+    methods: Set<HttpMethod> = HttpMethod.entries.toSet(),
+    authenticator: Authenticator<HttpCredential>,
+    block: Handler,
+): Unit = run { routes.add(RegexRoute(path, block, methods, type = RouteType.Regex, authenticator = authenticator)) }

src/jsMain/kotlin/cn/rtast/cfworker/route/type/AbstractRoute.kt

@@ -0,0 +1,45 @@
+/*
+ * Copyright © 2025 RTAkland
+ * Date: 2025/12/28 01:04
+ * Open Source Under Apache-2.0 License
+ * https://www.apache.org/licenses/LICENSE-2.0
+ */
+
+
+package cn.rtast.cfworker.route.type
+
+import cn.rtast.cfworker.HttpMethod
+import cn.rtast.cfworker.auth.credentials.HttpCredential
+import cn.rtast.cfworker.auth.provider.Authenticator
+import cn.rtast.cfworker.route.Handler
+import org.w3c.fetch.Request
+import org.w3c.fetch.Response
+
+
+internal interface AbstractRoute {
+    /**
+     * Route type
+     */
+    val type: RouteType
+
+    /**
+     * Route code handle block
+     */
+    val block: Handler
+
+    /**
+     * Allowed http methods
+     */
+    val methods: Set<HttpMethod>
+
+    /**
+     * Endpoint authenticator, if null, no auth required
+     */
+    val authenticator: Authenticator<HttpCredential>?
+
+    /**
+     * A route handler to process incoming http request
+     * @see Handler
+     */
+    suspend fun handle(request: Request): Response = block.invoke(request)
+}

src/jsMain/kotlin/cn/rtast/cfworker/route/type/RegexRoute.kt

@@ -0,0 +1,22 @@
+/*
+ * Copyright © 2025 RTAkland
+ * Date: 2025/12/28 01:04
+ * Open Source Under Apache-2.0 License
+ * https://www.apache.org/licenses/LICENSE-2.0
+ */
+
+
+package cn.rtast.cfworker.route.type
+
+import cn.rtast.cfworker.HttpMethod
+import cn.rtast.cfworker.auth.credentials.HttpCredential
+import cn.rtast.cfworker.auth.provider.Authenticator
+import cn.rtast.cfworker.route.Handler
+
+internal data class RegexRoute(
+    val path: Regex,
+    override val block: Handler,
+    override val methods: Set<HttpMethod>,
+    override val type: RouteType = RouteType.Regex,
+    override val authenticator: Authenticator<HttpCredential>? = null,
+) : AbstractRoute

src/jsMain/kotlin/cn/rtast/cfworker/route/type/RouteType.kt

@@ -0,0 +1,12 @@
+/*
+ * Copyright © 2025 RTAkland
+ * Date: 2025/12/28 01:05
+ * Open Source Under Apache-2.0 License
+ * https://www.apache.org/licenses/LICENSE-2.0
+ */
+
+package cn.rtast.cfworker.route.type
+
+internal enum class RouteType {
+    Regex, String
+}

src/jsMain/kotlin/cn/rtast/cfworker/route/type/StringRoute.kt

@@ -0,0 +1,22 @@
+/*
+ * Copyright © 2025 RTAkland
+ * Date: 2025/12/28 01:04
+ * Open Source Under Apache-2.0 License
+ * https://www.apache.org/licenses/LICENSE-2.0
+ */
+
+
+package cn.rtast.cfworker.route.type
+
+import cn.rtast.cfworker.HttpMethod
+import cn.rtast.cfworker.auth.credentials.HttpCredential
+import cn.rtast.cfworker.auth.provider.Authenticator
+import cn.rtast.cfworker.route.Handler
+
+internal data class StringRoute(
+    val path: String,
+    override val block: Handler,
+    override val methods: Set<HttpMethod>,
+    override val type: RouteType = RouteType.String,
+    override val authenticator: Authenticator<HttpCredential>? = null,
+) : AbstractRoute

src/jsMain/kotlin/cn/rtast/cfworker/util/Base64.kt

@@ -0,0 +1,13 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/1/3
+ */
+
+
+package cn.rtast.cfworker.util
+
+import kotlin.io.encoding.Base64
+
+internal val String.decodeBase64String: String
+    get() = Base64.decode(this.encodeToByteArray()).decodeToString()

src/jsMain/kotlin/cn/rtast/cfworker/util/ByteArray.kt

@@ -0,0 +1,23 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/1/3
+ */
+
+
+package cn.rtast.cfworker.util
+
+import org.khronos.webgl.ArrayBuffer
+import org.khronos.webgl.Int8Array
+
+/**
+ * Convert [ArrayBuffer] to [ByteArray]
+ */
+public fun ArrayBuffer.toByteArray(): ByteArray =
+    Int8Array(this).unsafeCast<ByteArray>()
+
+/**
+ * Convert [ByteArray] to [ArrayBuffer]
+ */
+public fun ByteArray.toArrayBuffer(): ArrayBuffer =
+    Int8Array(this.toTypedArray()).unsafeCast<ArrayBuffer>()

src/jsTest/kotlin/test/Test.kt

@@ -0,0 +1,11 @@
+/*
+ * Copyright © 2026 RTAkland
+ * Author: RTAkland
+ * Date: 2026/1/3
+ */
+
+
+package test
+
+class Test {
+}