Fix cloudflare workers

.github/workflows/test.yml

@@ -68,6 +68,7 @@ jobs:
           }
           set "@restatedev/restate-sdk-core"
           set "@restatedev/restate-sdk"
+          set "@restatedev/restate-sdk-cloudflare-workers"
           set "@restatedev/restate-sdk-clients"
           npm --workspaces update
           # We use dist-tag dev for the snapshot releases, see https://docs.npmjs.com/cli/v9/commands/npm-dist-tag for more info

.tools/build_core.sh

@@ -6,4 +6,5 @@ PROJECT_ROOT="$(dirname "$SELF_PATH")/.."
 pushd $PROJECT_ROOT/sdk-shared-core-wasm-bindings
 wasm-pack build --target web
 npx wasm-pack-inline ./pkg --dir ../packages/restate-sdk/src/endpoint/handlers/vm --name sdk_shared_core_wasm_bindings
+wasm-pack build --target bundler -d ../packages/restate-sdk-cloudflare-workers/patches/vm
 popd

package.json

@@ -17,6 +17,7 @@
   "workspaces": [
     "packages/restate-sdk-core",
     "packages/restate-sdk",
+    "packages/restate-sdk-cloudflare-workers",
     "packages/restate-sdk-clients",
     "packages/restate-sdk-examples",
     "packages/restate-e2e-services"
@@ -29,7 +30,7 @@
     "format": "npm run format -ws --if-present",
     "format-check": "npm run format-check -ws --if-present",
     "verify": "npm run verify -ws --if-present",
-    "clean": "rm -rf packages/restate-sdk/dist && rm -rf packages/restate-sdk-examples/dist && rm -rf packages/restate-sdk-ingress/dist && rm -rf packages/restate-e2e-services/dist && rm -rf packages/restate-sdk-core/dist"
+    "clean": "rm -rf packages/restate-sdk/dist && rm -rf packages/restate-sdk-cloudflare-workers/dist && rm -rf packages/restate-sdk-examples/dist && rm -rf packages/restate-sdk-ingress/dist && rm -rf packages/restate-e2e-services/dist && rm -rf packages/restate-sdk-core/dist"
   },
   "devDependencies": {
     "@arethetypeswrong/cli": "^0.15.3",

packages/restate-sdk-cloudflare-workers/package.json

@@ -0,0 +1,82 @@
+{
+  "name": "@restatedev/restate-sdk-cloudflare-workers",
+  "version": "1.3.1",
+  "description": "Typescript SDK for Restate",
+  "author": "Restate Developers",
+  "license": "MIT",
+  "email": "[email protected]",
+  "homepage": "https://github.com/restatedev/sdk-typescript#readme",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/restatedev/sdk-typescript.git"
+  },
+  "bugs": {
+    "url": "https://github.com/restatedev/sdk-typescript/issues"
+  },
+  "type": "module",
+  "sideEffects": false,
+  "main": "./dist/cjs/src/public_api.js",
+  "module": "./dist/esm/src/public_api.js",
+  "exports": {
+    ".": {
+      "import": {
+        "types": "./dist/esm/src/public_api.d.ts",
+        "default": "./dist/esm/src/public_api.js"
+      },
+      "require": {
+        "types": "./dist/cjs/src/public_api.d.ts",
+        "default": "./dist/cjs/src/public_api.js"
+      }
+    },
+    "./fetch": {
+      "import": {
+        "types": "./dist/esm/src/fetch.d.ts",
+        "default": "./dist/esm/src/fetch.js"
+      },
+      "require": {
+        "types": "./dist/cjs/src/fetch.d.ts",
+        "default": "./dist/cjs/src/fetch.js"
+      }
+    },
+    "./lambda": {
+      "import": {
+        "types": "./dist/esm/src/lambda.d.ts",
+        "default": "./dist/esm/src/lambda.js"
+      },
+      "require": {
+        "types": "./dist/cjs/src/lambda.d.ts",
+        "default": "./dist/cjs/src/lambda.js"
+      }
+    }
+  },
+  "typesVersions": {
+    "*": {
+      "fetch": [
+        "dist/cjs/src/fetch.d.ts"
+      ],
+      "lambda": [
+        "dist/cjs/src/lambda.d.ts"
+      ]
+    }
+  },
+  "types": "./dist/cjs/src/public_api.d.ts",
+  "files": [
+    "dist"
+  ],
+  "scripts": {
+    "build": "./patch_sdk_cf_workers.sh",
+    "release": "release-it"
+  },
+  "dependencies": {
+    "@restatedev/restate-sdk-core": "^1.3.1"
+  },
+  "devDependencies": {
+    "@types/aws-lambda": "^8.10.115"
+  },
+  "engines": {
+    "node": ">= 18.13"
+  },
+  "publishConfig": {
+    "@restatedev:registry": "https://registry.npmjs.org"
+  }
+}

packages/restate-sdk-cloudflare-workers/patch_sdk_cf_workers.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+if [[ ! -d ../restate-sdk/dist ]]; then
+  echo "ERROR - You need to build the restate-sdk module first!"
+  exit 1
+fi
+
+cp -r ../restate-sdk/dist .
+rm -r dist/cjs
+
+# Copy fetch.js
+cp patches/fetch.js dist/esm/src/fetch.js
+
+# Copy vm
+rm -r dist/esm/src/endpoint/handlers/vm
+cp -r patches/vm dist/esm/src/endpoint/handlers
+
+# Copy vm entrypoint
+cp patches/sdk_shared_core_wasm_bindings.js dist/esm/src/endpoint/handlers/vm

packages/restate-sdk-cloudflare-workers/patches/sdk_shared_core_wasm_bindings.js

@@ -0,0 +1,20 @@
+import * as imports from "./sdk_shared_core_wasm_bindings_bg.js";
+
+// switch between both syntax for node and for workerd
+import wkmod from "./sdk_shared_core_wasm_bindings_bg.wasm";
+
+const instance = new WebAssembly.Instance(wkmod, {
+    "./sdk_shared_core_wasm_bindings_bg.js": imports,
+});
+imports.__wbg_set_wasm(instance.exports);
+
+export * from "./sdk_shared_core_wasm_bindings_bg.js";
+
+instance.exports.__wbindgen_start();
+
+export function cloudflareWorkersBundlerPatch() {
+    // This is the result of many hours of debugging.
+    // The patch described here https://developers.cloudflare.com/workers/languages/rust/#javascript-plumbing-wasm-bindgen
+    // won't "just work", because the CF worker bundler has some bug that will eliminate this file.
+    // To prevent the elimination, we call this empty function from the fetch.js file, which is the user entrypoint of the SDK.
+}