feat(build): Core packages into single output files

packages/browser/rollup.npm.config.mjs

@@ -4,5 +4,13 @@ export default makeNPMConfigVariants(
   makeBaseNPMConfig({
     // packages with bundles have a different build directory structure
     hasBundles: true,
+    packageSpecificConfig: {
+      output: {
+        // set exports to 'named' or 'auto' so that rollup doesn't warn
+        exports: 'named',
+        // set preserveModules to false because we want to bundle everything into one file.
+        preserveModules: false,
+      },
+    },
   }),
 );

packages/core/rollup.npm.config.mjs

@@ -1,3 +1,14 @@
 import { makeBaseNPMConfig, makeNPMConfigVariants } from '@sentry-internal/rollup-utils';
 
-export default makeNPMConfigVariants(makeBaseNPMConfig());
+export default makeNPMConfigVariants(
+  makeBaseNPMConfig({
+    packageSpecificConfig: {
+      output: {
+        // set exports to 'named' or 'auto' so that rollup doesn't warn
+        exports: 'named',
+        // set preserveModules to false because we want to bundle everything into one file.
+        preserveModules: false,
+      },
+    },
+  }),
+);

packages/node-experimental/rollup.anr-worker.config.mjs

@@ -1,34 +1,31 @@
 import { makeBaseBundleConfig } from '@sentry-internal/rollup-utils';
 
-function createAnrWorkerConfig(destDir, esm) {
-  return makeBaseBundleConfig({
-    bundleType: 'node-worker',
-    entrypoints: ['src/integrations/anr/worker.ts'],
-    licenseTitle: '@sentry/node',
-    outputFileBase: () => 'worker-script.js',
-    packageSpecificConfig: {
-      output: {
-        dir: destDir,
-        sourcemap: false,
-      },
-      plugins: [
-        {
-          name: 'output-base64-worker-script',
-          renderChunk(code) {
-            const base64Code = Buffer.from(code).toString('base64');
-            if (esm) {
-              return `export const base64WorkerScript = '${base64Code}';`;
-            } else {
-              return `exports.base64WorkerScript = '${base64Code}';`;
-            }
-          },
+export function createAnrWorkerCode() {
+  let base64Code;
+
+  return {
+    workerRollupConfig: makeBaseBundleConfig({
+      bundleType: 'node-worker',
+      entrypoints: ['src/integrations/anr/worker.ts'],
+      licenseTitle: '@sentry/node',
+      outputFileBase: () => 'worker-script.js',
+      packageSpecificConfig: {
+        output: {
+          dir: 'build/esm/integrations/anr',
+          sourcemap: false,
         },
-      ],
+        plugins: [
+          {
+            name: 'output-base64-worker-script',
+            renderChunk(code) {
+              base64Code = Buffer.from(code).toString('base64');
+            },
+          },
+        ],
+      },
+    }),
+    getBase64Code() {
+      return base64Code;
     },
-  });
+  };
 }
-
-export const anrWorkerConfigs = [
-  createAnrWorkerConfig('build/esm/integrations/anr', true),
-  createAnrWorkerConfig('build/cjs/integrations/anr', false),
-];

packages/node-experimental/rollup.npm.config.mjs

@@ -1,8 +1,32 @@
+import replace from '@rollup/plugin-replace';
 import { makeBaseNPMConfig, makeNPMConfigVariants } from '@sentry-internal/rollup-utils';
-import { anrWorkerConfigs } from './rollup.anr-worker.config.mjs';
+import { createAnrWorkerCode } from './rollup.anr-worker.config.mjs';
+
+const { workerRollupConfig, getBase64Code } = createAnrWorkerCode();
 
 export default [
-  ...makeNPMConfigVariants(makeBaseNPMConfig()),
-  // The ANR worker builds must come after the main build because they overwrite the worker-script.js file
-  ...anrWorkerConfigs,
+  // The worker needs to be built first since it's output is used in the main bundle.
+  workerRollupConfig,
+  ...makeNPMConfigVariants(
+    makeBaseNPMConfig({
+      packageSpecificConfig: {
+        output: {
+          // set exports to 'named' or 'auto' so that rollup doesn't warn
+          exports: 'named',
+          // set preserveModules to false because we want to bundle everything into one file.
+          preserveModules: false,
+        },
+        plugins: [
+          replace({
+            delimiters: ['###', '###'],
+            // removes some webpack warnings
+            preventAssignment: true,
+            values: {
+              base64WorkerScript: () => getBase64Code(),
+            },
+          }),
+        ],
+      },
+    }),
+  ),
 ];

packages/node-experimental/src/integrations/anr/worker-script.ts

@@ -1,2 +1,2 @@
-// This file is a placeholder that gets overwritten in the build directory.
-export const base64WorkerScript = '';
+// This string is a placeholder that gets overwritten with the worker code.
+export const base64WorkerScript = '###base64WorkerScript###';

packages/opentelemetry/rollup.npm.config.mjs

@@ -1,3 +1,14 @@
 import { makeBaseNPMConfig, makeNPMConfigVariants } from '@sentry-internal/rollup-utils';
 
-export default makeNPMConfigVariants(makeBaseNPMConfig());
+export default makeNPMConfigVariants(
+  makeBaseNPMConfig({
+    packageSpecificConfig: {
+      output: {
+        // set exports to 'named' or 'auto' so that rollup doesn't warn
+        exports: 'named',
+        // set preserveModules to false because we want to bundle everything into one file.
+        preserveModules: false,
+      },
+    },
+  }),
+);

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

@@ -1,3 +1,14 @@
 import { makeBaseNPMConfig, makeNPMConfigVariants } from '@sentry-internal/rollup-utils';
 
-export default makeNPMConfigVariants(makeBaseNPMConfig());
+export default makeNPMConfigVariants(
+  makeBaseNPMConfig({
+    packageSpecificConfig: {
+      output: {
+        // set exports to 'named' or 'auto' so that rollup doesn't warn
+        exports: 'named',
+        // set preserveModules to false because we want to bundle everything into one file.
+        preserveModules: false,
+      },
+    },
+  }),
+);

packages/utils/rollup.npm.config.mjs

@@ -1,3 +1,14 @@
 import { makeBaseNPMConfig, makeNPMConfigVariants } from '@sentry-internal/rollup-utils';
 
-export default makeNPMConfigVariants(makeBaseNPMConfig());
+export default makeNPMConfigVariants(
+  makeBaseNPMConfig({
+    packageSpecificConfig: {
+      output: {
+        // set exports to 'named' or 'auto' so that rollup doesn't warn
+        exports: 'named',
+        // set preserveModules to false because we want to bundle everything into one file.
+        preserveModules: false,
+      },
+    },
+  }),
+);

packages/utils/scripts/buildRollup.ts

@@ -12,5 +12,5 @@ function run(cmd: string, options?: childProcess.ExecSyncOptions): string | Buff
 run('yarn rollup -c rollup.npm.config.mjs');
 
 // We want to distribute the README because it contains the MIT license blurb from Sucrase and Rollup
-fs.copyFileSync('src/buildPolyfills/README.md', 'build/cjs/buildPolyfills/README.md');
-fs.copyFileSync('src/buildPolyfills/README.md', 'build/esm/buildPolyfills/README.md');
+fs.copyFileSync('src/buildPolyfills/README.md', 'build/cjs/build-polyfills-license.md');
+fs.copyFileSync('src/buildPolyfills/README.md', 'build/esm/build-polyfills-license.md');