feat(replay): export compression worker for bundling

packages/replay-internal/package.json

@@ -7,6 +7,16 @@
   "types": "build/npm/types/index.d.ts",
   "exports": {
     "./package.json": "./package.json",
+    "./worker-bundler": {
+      "import": {
+        "types": "./build/npm/types/worker-bundler.d.ts",
+        "default": "./build/npm/esm/worker-bundler.js"
+      },
+      "require": {
+        "types": "./build/npm/types/worker-bundler.d.ts",
+        "default": "./build/npm/cjs/worker-bundler.js"
+      }
+    },
     ".": {
       "import": {
         "types": "./build/npm/types/index.d.ts",

packages/replay-internal/rollup.npm.config.mjs

@@ -1,3 +1,4 @@
+import nodeResolve from '@rollup/plugin-node-resolve';
 import { makeBaseNPMConfig, makeNPMConfigVariants } from '@sentry-internal/rollup-utils';
 
 export default makeNPMConfigVariants(
@@ -16,4 +17,15 @@ export default makeNPMConfigVariants(
       },
     },
   }),
+).concat(
+  ['esm', 'cjs'].map(format => ({
+    input: ['./src/worker-bundler.ts'],
+    output: {
+      file: `./build/npm/${format}/worker-bundler.js`,
+      strict: false,
+      format,
+    },
+    treeshake: false,
+    plugins: [nodeResolve()],
+  })),
 );

packages/replay-internal/src/eventBuffer/index.ts

@@ -1,13 +1,13 @@
 import { getWorkerURL } from '@sentry-internal/replay-worker';
 import { DEBUG_BUILD } from '../debug-build';
-import type { EventBuffer } from '../types';
+import type { EventBuffer, ReplayWorkerURL } from '../types';
 import { logger } from '../util/logger';
 import { EventBufferArray } from './EventBufferArray';
 import { EventBufferProxy } from './EventBufferProxy';
 
 interface CreateEventBufferParams {
   useCompression: boolean;
-  workerUrl?: string;
+  workerUrl?: ReplayWorkerURL;
 }
 
 // Treeshakable guard to remove the code of the included compression worker
@@ -36,7 +36,7 @@ export function createEventBuffer({
   return new EventBufferArray();
 }
 
-function _loadWorker(customWorkerUrl?: string): EventBufferProxy | void {
+function _loadWorker(customWorkerUrl?: ReplayWorkerURL): EventBufferProxy | void {
   try {
     const workerUrl = customWorkerUrl || _getWorkerUrl();
 

packages/replay-internal/src/types/replay.ts

@@ -90,6 +90,8 @@ export interface ReplayNetworkOptions {
   networkResponseHeaders: string[];
 }
 
+export type ReplayWorkerURL = string | URL;
+
 export interface ReplayPluginOptions extends ReplayNetworkOptions {
   /**
    * The sample rate for session-long replays. 1.0 will record all sessions and
@@ -130,7 +132,7 @@ export interface ReplayPluginOptions extends ReplayNetworkOptions {
    * If defined, use this worker URL instead of the default included one for compression.
    * This will only be used if `useCompression` is not false.
    */
-  workerUrl?: string;
+  workerUrl?: ReplayWorkerURL;
 
   /**
    * Block all media (e.g. images, svg, video) in recordings.

packages/replay-internal/src/worker-bundler.ts

@@ -0,0 +1 @@
+import '@sentry-internal/replay-worker/worker-bundler';

packages/replay-worker/package.json

@@ -5,6 +5,23 @@
   "main": "build/esm/index.js",
   "module": "build/esm/index.js",
   "types": "build/types/index.d.ts",
+  "exports": {
+    "./package.json": "./package.json",
+    "./worker-bundler": {
+      "types": "./build/types/worker-bundler.d.ts",
+      "default": "./build/esm/worker-bundler.js"
+    },
+    ".": {
+      "import": {
+        "types": "./build/types/index.d.ts",
+        "default": "./build/esm/index.js"
+      },
+      "require": {
+        "types": "./build/types/index.d.ts",
+        "default": "./build/cjs/index.js"
+      }
+    }
+  },
   "typesVersions": {
     "<5.0": {
       "build/types/index.d.ts": [

packages/replay-worker/rollup.worker.config.mjs

@@ -48,6 +48,24 @@ const config = defineConfig([
       },
     ],
   },
+  {
+    input: ['./src/_worker.ts'],
+    output: {
+      file: './build/esm/worker-bundler.js',
+      format: 'esm',
+    },
+    treeshake: 'smallest',
+    plugins: [
+      commonjs(),
+      typescript({ tsconfig: './tsconfig.json', inlineSourceMap: false, sourceMap: false, inlineSources: false }),
+      resolve(),
+      terser({
+        mangle: {
+          module: true,
+        },
+      }),
+    ],
+  },
 ]);
 
 export default config;

packages/replay-worker/src/worker-bundler.ts

@@ -0,0 +1,3 @@
+// This is replaced at build-time with the content from _worker.ts
+// This is just a placeholder so that types etc. are correct.
+export {};

packages/replay-worker/tsconfig.types.json

@@ -1,6 +1,6 @@
 {
   "extends": "./tsconfig.json",
-  "include": ["src/index.ts", "src/worker.ts"],
+  "include": ["src/index.ts", "src/worker.ts", "src/worker-bundler.ts"],
   "compilerOptions": {
     "declaration": true,
     "declarationMap": true,