feat: add support for serverless v4 and typescript

.eslintignore

@@ -1,2 +1 @@
-/coverage
-/src/lambda/handler-runner/in-process-runner/aws-lambda-ric/UserFunction.js
+/coverage

.github/workflows/nodejs.yml

@@ -9,12 +9,13 @@ on:
 env:
   FORCE_COLOR: 1
   PRINT_OFFLINE_OUTPUT: 1
+  SERVERLESS_ACCESS_KEY: ${{ secrets.SERVERLESS_ACCESS_KEY }}
 
 jobs:
   build:
     name: "[${{ matrix.os }}] node.js v${{ matrix.node-version }}"
     runs-on: ${{ matrix.os }}
-
+    timeout-minutes: 40
     strategy:
       fail-fast: false
       matrix:

package.json

@@ -97,6 +97,8 @@
     "luxon": "^3.4.4",
     "node-schedule": "^2.1.1",
     "p-memoize": "^7.1.1",
+    "tree-kill": "^1.2.2",
+    "tsx": "^4.16.2",
     "velocityjs": "^2.0.6",
     "ws": "^8.18.0"
   },
@@ -113,9 +115,9 @@
     "mocha": "^10.6.0",
     "nyc": "^17.0.0",
     "prettier": "^3.3.2",
-    "serverless": "^3.39.0"
+    "serverless": "^4.1.18"
   },
   "peerDependencies": {
-    "serverless": "^3.2.0"
+    "serverless": "^4.0.0"
   }
 }

src/config/supportedRuntimes.js

@@ -62,6 +62,7 @@ export const supportedPython = new Set([
   "python3.9",
   "python3.10",
   "python3.11",
+  "python3.12",
 ])
 
 // RUBY

src/lambda/handler-runner/in-process-runner/aws-lambda-ric/Errors.js

@@ -0,0 +1,32 @@
+/* eslint-disable max-classes-per-file */
+/**
+ * Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * This code was copied from:
+ * https://github.com/aws/aws-lambda-nodejs-runtime-interface-client/blob/main/src/Errors.js
+ *
+ * Defines custom error types throwable by the runtime.
+ */
+
+"use strict"
+
+const errorClasses = [
+  class ImportModuleError extends Error {},
+  class HandlerNotFound extends Error {},
+  class MalformedHandlerName extends Error {},
+  class UserCodeSyntaxError extends Error {},
+  class MalformedStreamingHandler extends Error {},
+  class InvalidStreamingOperation extends Error {},
+  class UnhandledPromiseRejection extends Error {
+    constructor(reason, promise) {
+      super(reason)
+      this.reason = reason
+      this.promise = promise
+    }
+  },
+]
+
+errorClasses.forEach((e) => {
+  module.exports[e.name] = e
+  e.prototype.name = `Runtime.${e.name}`
+})

src/lambda/handler-runner/in-process-runner/aws-lambda-ric/HttpResponseStream.js

@@ -0,0 +1,38 @@
+/* eslint-disable no-underscore-dangle */
+/* eslint-disable no-param-reassign */
+/**
+ * Copyright 2022 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * This code was copied from:
+ * https://github.com/aws/aws-lambda-nodejs-runtime-interface-client/blob/main/src/HttpResponseStream.js
+ *
+ * HttpResponseStream is NOT used by the runtime.
+ * It is only exposed in the `awslambda` variable for customers to use.
+ */
+
+"use strict"
+
+const METADATA_PRELUDE_CONTENT_TYPE =
+  "application/vnd.awslambda.http-integration-response"
+const DELIMITER_LEN = 8
+
+// Implements the application/vnd.awslambda.http-integration-response content type.
+class HttpResponseStream {
+  static from(underlyingStream, prelude) {
+    underlyingStream.setContentType(METADATA_PRELUDE_CONTENT_TYPE)
+
+    // JSON.stringify is required. NULL byte is not allowed in metadataPrelude.
+    const metadataPrelude = JSON.stringify(prelude)
+
+    underlyingStream._onBeforeFirstWrite = (write) => {
+      write(metadataPrelude)
+
+      // Write 8 null bytes after the JSON prelude.
+      write(new Uint8Array(DELIMITER_LEN))
+    }
+
+    return underlyingStream
+  }
+}
+
+module.exports.HttpResponseStream = HttpResponseStream