[WIP] feat: Span Streaming POC

.size-limit.js

@@ -38,7 +38,14 @@ module.exports = [
     path: 'packages/browser/build/npm/esm/index.js',
     import: createImport('init', 'browserTracingIntegration'),
     gzip: true,
-    limit: '41 KB',
+    limit: '42 KB',
+  },
+  {
+    name: '@sentry/browser (incl. Tracing with Span Streaming)',
+    path: 'packages/browser/build/npm/esm/index.js',
+    import: createImport('init', 'browserTracingIntegration', 'spanStreamingIntegration'),
+    gzip: true,
+    limit: '44 KB',
   },
   {
     name: '@sentry/browser (incl. Tracing, Replay)',
@@ -75,14 +82,14 @@ module.exports = [
     path: 'packages/browser/build/npm/esm/index.js',
     import: createImport('init', 'browserTracingIntegration', 'replayIntegration', 'replayCanvasIntegration'),
     gzip: true,
-    limit: '84 KB',
+    limit: '85 KB',
   },
   {
     name: '@sentry/browser (incl. Tracing, Replay, Feedback)',
     path: 'packages/browser/build/npm/esm/index.js',
     import: createImport('init', 'browserTracingIntegration', 'replayIntegration', 'feedbackIntegration'),
     gzip: true,
-    limit: '97 KB',
+    limit: '98 KB',
   },
   {
     name: '@sentry/browser (incl. Feedback)',
@@ -96,7 +103,7 @@ module.exports = [
     path: 'packages/browser/build/npm/esm/index.js',
     import: createImport('init', 'sendFeedback'),
     gzip: true,
-    limit: '30 KB',
+    limit: '31 KB',
   },
   {
     name: '@sentry/browser (incl. FeedbackAsync)',
@@ -120,22 +127,22 @@ module.exports = [
     import: createImport('init', 'ErrorBoundary', 'reactRouterV6BrowserTracingIntegration'),
     ignore: ['react/jsx-runtime'],
     gzip: true,
-    limit: '43 KB',
+    limit: '44 KB',
   },
   // Vue SDK (ESM)
   {
     name: '@sentry/vue',
     path: 'packages/vue/build/esm/index.js',
     import: createImport('init'),
     gzip: true,
-    limit: '30 KB',
+    limit: '31 KB',
   },
   {
     name: '@sentry/vue (incl. Tracing)',
     path: 'packages/vue/build/esm/index.js',
     import: createImport('init', 'browserTracingIntegration'),
     gzip: true,
-    limit: '43 KB',
+    limit: '44 KB',
   },
   // Svelte SDK (ESM)
   {
@@ -150,7 +157,7 @@ module.exports = [
     name: 'CDN Bundle',
     path: createCDNPath('bundle.min.js'),
     gzip: true,
-    limit: '27 KB',
+    limit: '27.5 KB',
   },
   {
     name: 'CDN Bundle (incl. Tracing)',
@@ -183,7 +190,7 @@ module.exports = [
     path: createCDNPath('bundle.tracing.min.js'),
     gzip: false,
     brotli: false,
-    limit: '124 KB',
+    limit: '125 KB',
   },
   {
     name: 'CDN Bundle (incl. Tracing, Replay) - uncompressed',
@@ -215,7 +222,7 @@ module.exports = [
     import: createImport('init'),
     ignore: ['$app/stores'],
     gzip: true,
-    limit: '42 KB',
+    limit: '43 KB',
   },
   // Node-Core SDK (ESM)
   {

CHANGELOG.md

@@ -6,6 +6,16 @@
 
 Work in this release was contributed by @0xbad0c0d3. Thank you for your contribution!
 
+## 10.21.0-alpha.1
+
+This release is a preview release for sending spans in browser via spanV2 instead of transaction event envelopes. All of this is experimental and subject to change. Use at your own risk. [More Details.](https://github.com/getsentry/sentry-javascript/pull/17852)
+
+- export withStreamSpan from `@sentry/browser`
+
+## 10.21.0-alpha.0
+
+This release is a preview release for sending spans in browser via spanV2 instead of transaction event envelopes. All of this is experimental and subject to change. Use at your own risk. [More Details.](https://github.com/getsentry/sentry-javascript/pull/17852)
+
 ## 10.20.0
 
 ### Important Changes

dev-packages/browser-integration-tests/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@sentry-internal/browser-integration-tests",
-  "version": "10.20.0",
+  "version": "10.21.0-alpha.1",
   "main": "index.js",
   "license": "MIT",
   "engines": {
@@ -43,7 +43,7 @@
     "@babel/preset-typescript": "^7.16.7",
     "@playwright/test": "~1.53.2",
     "@sentry-internal/rrweb": "2.34.0",
-    "@sentry/browser": "10.20.0",
+    "@sentry/browser": "10.21.0-alpha.1",
     "@supabase/supabase-js": "2.49.3",
     "axios": "^1.12.2",
     "babel-loader": "^8.2.2",

dev-packages/bundle-analyzer-scenarios/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@sentry-internal/bundle-analyzer-scenarios",
-  "version": "10.20.0",
+  "version": "10.21.0-alpha.1",
   "description": "Scenarios to test bundle analysis with",
   "repository": "git://github.com/getsentry/sentry-javascript.git",
   "homepage": "https://github.com/getsentry/sentry-javascript/tree/master/dev-packages/bundle-analyzer-scenarios",

dev-packages/clear-cache-gh-action/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@sentry-internal/clear-cache-gh-action",
   "description": "An internal Github Action to clear GitHub caches.",
-  "version": "10.20.0",
+  "version": "10.21.0-alpha.1",
   "license": "MIT",
   "engines": {
     "node": ">=18"

dev-packages/cloudflare-integration-tests/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@sentry-internal/cloudflare-integration-tests",
-  "version": "10.20.0",
+  "version": "10.21.0-alpha.1",
   "license": "MIT",
   "engines": {
     "node": ">=18"
@@ -13,11 +13,11 @@
     "test:watch": "yarn test --watch"
   },
   "dependencies": {
-    "@sentry/cloudflare": "10.20.0"
+    "@sentry/cloudflare": "10.21.0-alpha.1"
   },
   "devDependencies": {
     "@cloudflare/workers-types": "^4.20250922.0",
-    "@sentry-internal/test-utils": "10.20.0",
+    "@sentry-internal/test-utils": "10.21.0-alpha.1",
     "vitest": "^3.2.4",
     "wrangler": "4.22.0"
   },

dev-packages/e2e-tests/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@sentry-internal/e2e-tests",
-  "version": "10.20.0",
+  "version": "10.21.0-alpha.1",
   "license": "MIT",
   "private": true,
   "scripts": {

dev-packages/external-contributor-gh-action/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@sentry-internal/external-contributor-gh-action",
   "description": "An internal Github Action to add external contributors to the CHANGELOG.md file.",
-  "version": "10.20.0",
+  "version": "10.21.0-alpha.1",
   "license": "MIT",
   "engines": {
     "node": ">=18"

dev-packages/node-core-integration-tests/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@sentry-internal/node-core-integration-tests",
-  "version": "10.20.0",
+  "version": "10.21.0-alpha.1",
   "license": "MIT",
   "engines": {
     "node": ">=18"
@@ -34,8 +34,8 @@
     "@opentelemetry/resources": "^2.1.0",
     "@opentelemetry/sdk-trace-base": "^2.1.0",
     "@opentelemetry/semantic-conventions": "^1.37.0",
-    "@sentry/core": "10.20.0",
-    "@sentry/node-core": "10.20.0",
+    "@sentry/core": "10.21.0-alpha.1",
+    "@sentry/node-core": "10.21.0-alpha.1",
     "body-parser": "^1.20.3",
     "cors": "^2.8.5",
     "cron": "^3.1.6",

dev-packages/node-integration-tests/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@sentry-internal/node-integration-tests",
-  "version": "10.20.0",
+  "version": "10.21.0-alpha.1",
   "license": "MIT",
   "engines": {
     "node": ">=18"
@@ -33,9 +33,9 @@
     "@nestjs/core": "^11",
     "@nestjs/platform-express": "^11",
     "@prisma/client": "6.15.0",
-    "@sentry/aws-serverless": "10.20.0",
-    "@sentry/core": "10.20.0",
-    "@sentry/node": "10.20.0",
+    "@sentry/aws-serverless": "10.21.0-alpha.1",
+    "@sentry/core": "10.21.0-alpha.1",
+    "@sentry/node": "10.21.0-alpha.1",
     "@types/mongodb": "^3.6.20",
     "@types/mysql": "^2.15.21",
     "@types/pg": "^8.6.5",
@@ -80,7 +80,7 @@
     "yargs": "^16.2.0"
   },
   "devDependencies": {
-    "@sentry-internal/test-utils": "10.20.0",
+    "@sentry-internal/test-utils": "10.21.0-alpha.1",
     "@types/amqplib": "^0.10.5",
     "@types/node-cron": "^3.0.11",
     "@types/node-schedule": "^2.1.7",

dev-packages/node-overhead-gh-action/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@sentry-internal/node-overhead-gh-action",
-  "version": "10.20.0",
+  "version": "10.21.0-alpha.1",
   "license": "MIT",
   "engines": {
     "node": ">=18"
@@ -23,7 +23,7 @@
     "fix": "eslint . --format stylish --fix"
   },
   "dependencies": {
-    "@sentry/node": "10.20.0",
+    "@sentry/node": "10.21.0-alpha.1",
     "express": "^4.21.1",
     "mysql2": "^3.14.4"
   },

dev-packages/rollup-utils/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@sentry-internal/rollup-utils",
-  "version": "10.20.0",
+  "version": "10.21.0-alpha.1",
   "description": "Rollup utilities used at Sentry for the Sentry JavaScript SDK",
   "repository": "git://github.com/getsentry/sentry-javascript.git",
   "homepage": "https://github.com/getsentry/sentry-javascript/tree/master/packages/rollup-utils",

dev-packages/size-limit-gh-action/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@sentry-internal/size-limit-gh-action",
   "description": "An internal Github Action to compare the current size of a PR against the one on develop.",
-  "version": "10.20.0",
+  "version": "10.21.0-alpha.1",
   "license": "MIT",
   "engines": {
     "node": ">=18"

dev-packages/test-utils/package.json

@@ -1,6 +1,6 @@
 {
   "private": true,
-  "version": "10.20.0",
+  "version": "10.21.0-alpha.1",
   "name": "@sentry-internal/test-utils",
   "author": "Sentry",
   "license": "MIT",
@@ -48,7 +48,7 @@
   },
   "devDependencies": {
     "@playwright/test": "~1.53.2",
-    "@sentry/core": "10.20.0"
+    "@sentry/core": "10.21.0-alpha.1"
   },
   "volta": {
     "extends": "../../package.json"

lerna.json

@@ -1,5 +1,5 @@
 {
   "$schema": "node_modules/lerna/schemas/lerna-schema.json",
-  "version": "10.20.0",
+  "version": "10.21.0-alpha.1",
   "npmClient": "yarn"
 }

packages/angular/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@sentry/angular",
-  "version": "10.20.0",
+  "version": "10.21.0-alpha.1",
   "description": "Official Sentry SDK for Angular",
   "repository": "git://github.com/getsentry/sentry-javascript.git",
   "homepage": "https://github.com/getsentry/sentry-javascript/tree/master/packages/angular",
@@ -21,8 +21,8 @@
     "rxjs": "^6.5.5 || ^7.x"
   },
   "dependencies": {
-    "@sentry/browser": "10.20.0",
-    "@sentry/core": "10.20.0",
+    "@sentry/browser": "10.21.0-alpha.1",
+    "@sentry/core": "10.21.0-alpha.1",
     "tslib": "^2.4.1"
   },
   "devDependencies": {

packages/astro/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@sentry/astro",
-  "version": "10.20.0",
+  "version": "10.21.0-alpha.1",
   "description": "Official Sentry SDK for Astro",
   "repository": "git://github.com/getsentry/sentry-javascript.git",
   "homepage": "https://github.com/getsentry/sentry-javascript/tree/master/packages/astro",
@@ -56,9 +56,9 @@
     "astro": ">=3.x || >=4.0.0-beta || >=5.x"
   },
   "dependencies": {
-    "@sentry/browser": "10.20.0",
-    "@sentry/core": "10.20.0",
-    "@sentry/node": "10.20.0",
+    "@sentry/browser": "10.21.0-alpha.1",
+    "@sentry/core": "10.21.0-alpha.1",
+    "@sentry/node": "10.21.0-alpha.1",
     "@sentry/vite-plugin": "^4.1.0"
   },
   "devDependencies": {

packages/astro/src/server/sdk.ts

@@ -15,6 +15,7 @@ export function init(options: NodeOptions): NodeClient | undefined {
 
   const client = initNodeSdk(opts);
 
+  // TODO (span-streaming): remove this event processor. In this case, can probably just disable http integration server spans
   client?.addEventProcessor(
     Object.assign(
       (event: Event) => {

packages/aws-serverless/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@sentry/aws-serverless",
-  "version": "10.20.0",
+  "version": "10.21.0-alpha.1",
   "description": "Official Sentry SDK for AWS Lambda and AWS Serverless Environments",
   "repository": "git://github.com/getsentry/sentry-javascript.git",
   "homepage": "https://github.com/getsentry/sentry-javascript/tree/master/packages/aws-serverless",
@@ -69,8 +69,8 @@
     "@opentelemetry/instrumentation": "^0.204.0",
     "@opentelemetry/instrumentation-aws-sdk": "0.59.0",
     "@opentelemetry/semantic-conventions": "^1.37.0",
-    "@sentry/core": "10.20.0",
-    "@sentry/node": "10.20.0",
+    "@sentry/core": "10.21.0-alpha.1",
+    "@sentry/node": "10.21.0-alpha.1",
     "@types/aws-lambda": "^8.10.62"
   },
   "devDependencies": {

packages/browser-utils/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@sentry-internal/browser-utils",
-  "version": "10.20.0",
+  "version": "10.21.0-alpha.1",
   "description": "Browser Utilities for all Sentry JavaScript SDKs",
   "repository": "git://github.com/getsentry/sentry-javascript.git",
   "homepage": "https://github.com/getsentry/sentry-javascript/tree/master/packages/browser-utils",
@@ -39,7 +39,7 @@
     "access": "public"
   },
   "dependencies": {
-    "@sentry/core": "10.20.0"
+    "@sentry/core": "10.21.0-alpha.1"
   },
   "scripts": {
     "build": "run-p build:transpile build:types",