diff --git a/.gitignore b/.gitignore
index 300aee3c0cee..73ee815601fe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -33,3 +33,9 @@ lint-results.json
 # legacy
 !/packages/raven-js/dist
 tmp.js
+/packages/*/esm5
+/packages/*/esmnext
+/packages/*/bundles
+
+# ts
+*.tsbuildinfo
diff --git a/package.json b/package.json
index c1555d85d168..da1461754303 100644
--- a/package.json
+++ b/package.json
@@ -1,9 +1,9 @@
 {
   "private": true,
   "scripts": {
-    "build": "lerna run --stream --concurrency 1 --sort build",
-    "build:es5": "lerna run --stream --concurrency 1 --sort build:es5",
-    "build:esm": "lerna run --stream --concurrency 1 --sort build:esm",
+    "build": "lerna run --stream --sort build",
+    "build:esm5": "lerna run --stream --sort build:esm5",
+    "build:esmnext": "lerna run --stream --sort build:esmnext",
     "build:watch": "lerna run build:watch --stream --no-sort --concurrency 9999",
     "clean": "lerna run --stream clean",
     "fix": "lerna run --stream --concurrency 1 fix",
@@ -50,6 +50,7 @@
     "prettier-check": "^2.0.0",
     "replace-in-file": "^3.4.4",
     "rimraf": "^2.6.3",
+    "rollup-plugin-auto-external": "^2.0.0",
     "sinon": "^7.2.7",
     "ts-jest": "^24.0.0",
     "tslint": "^5.14.0",
diff --git a/packages/browser/package.json b/packages/browser/package.json
index 2604ab5aa591..ac9b42ce0db6 100644
--- a/packages/browser/package.json
+++ b/packages/browser/package.json
@@ -9,9 +9,15 @@
   "engines": {
     "node": ">=6"
   },
-  "main": "dist/index.js",
-  "module": "esm/index.js",
-  "types": "dist/index.d.ts",
+  "module": "./bundles/browser.fesm5.js",
+  "esnext": "./bundles/browser.fesmnext.js",
+  "esm5": "./esm5/index.js",
+  "esmnext": "./esmnext/index.js",
+  "fesm5": "./bundles/browser.fesm5.js",
+  "fesmnext": "./bundles/browser.fesmnext.js",
+  "jsnext:main": "./esmnext/index.js",
+  "main": "./bundles/browser.js",
+  "typings": "./dist/index.d.ts",
   "publishConfig": {
     "access": "public"
   },
@@ -47,22 +53,27 @@
     "rollup-plugin-license": "^0.8.1",
     "rollup-plugin-node-resolve": "^4.0.1",
     "rollup-plugin-terser": "^4.0.4",
-    "rollup-plugin-typescript2": "^0.20.1",
+    "rollup-plugin-typescript2": "^0.21.0",
     "sinon": "^7.2.7",
     "tslint": "^5.14.0",
     "typescript": "^3.3.3333",
     "webpack": "^4.29.6"
   },
   "scripts": {
-    "build": "run-s build:dist build:esm build:bundle",
+    "build": "run-s build:split build:bundle",
+    "build:split": "run-p build:dist build:esm5 build:esmnext",
     "build:bundle": "rollup --config",
     "build:bundle:watch": "rollup --config --watch",
     "build:dist": "tsc -p tsconfig.build.json",
-    "build:dist:watch": "tsc -p tsconfig.build.json -w --preserveWatchOutput",
-    "build:esm": "tsc -p tsconfig.esm.json",
-    "build:esm:watch": "tsc -p tsconfig.esm.json -w --preserveWatchOutput",
-    "build:watch": "run-p build:dist:watch build:esm:watch build:bundle:watch",
-    "clean": "rimraf dist coverage .rpt2_cache build esm",
+    "build:esm5": "tsc -p tsconfig.esm5.json",
+    "build:esmnext": "tsc -p tsconfig.esmnext.json",
+    "build:watch": "run-s build:split build:watch:loop",
+    "build:watch:loop": "run-p build:watch:dist build:watch:esm5 build:watch:esmnext build:watch:bundle",
+    "build:watch:bundle": "rollup --config --watch",
+    "build:watch:dist": "tsc -wp tsconfig.build.json",
+    "build:watch:esm5": "tsc -wp tsconfig.esm5.json",
+    "build:watch:esmnext": "tsc -wp tsconfig.esmnext.json",
+    "clean": "rimraf dist esm5 esmnext bundles coverage .rpt2_cache build esm",
     "link:yarn": "yarn link",
     "lint": "run-s lint:prettier lint:tslint",
     "lint:prettier": "prettier-check \"{src,test}/**/*.ts\"",
diff --git a/packages/browser/rollup.config.js b/packages/browser/rollup.config.js
index 4c49fb298b1a..2c77d4a35d55 100644
--- a/packages/browser/rollup.config.js
+++ b/packages/browser/rollup.config.js
@@ -1,8 +1,9 @@
-import { terser } from 'rollup-plugin-terser';
-import typescript from 'rollup-plugin-typescript2';
+import commonjs from 'rollup-plugin-commonjs';
 import license from 'rollup-plugin-license';
 import resolve from 'rollup-plugin-node-resolve';
-import commonjs from 'rollup-plugin-commonjs';
+import { terser } from 'rollup-plugin-terser';
+import typescript from 'rollup-plugin-typescript2';
+import { generate_cfg, paths } from '../../resources/rollup.base';
 
 const commitHash = require('child_process')
   .execSync('git rev-parse --short HEAD', { encoding: 'utf-8' })
@@ -11,7 +12,7 @@ const commitHash = require('child_process')
 const terserInstance = terser({
   mangle: {
     // captureExceptions and captureMessage are public API methods and they don't need to be listed here
-    // as mangler doesn't touch user-facing thing, however sentryWrapepd is not, and it would be mangled into a minified version.
+    // as mangler doesn't touch user-facing thing, however sentryWrapped is not, and it would be mangled into a minified version.
     // We need those full names to correctly detect our internal frames for stripping.
     // I listed all of them here just for the clarity sake, as they are all used in the frames manipulation process.
     reserved: ['captureException', 'captureMessage', 'sentryWrapped'],
@@ -21,21 +22,12 @@ const terserInstance = terser({
   },
 });
 
-const paths = {
-  '@sentry/utils': ['../utils/src'],
-  '@sentry/core': ['../core/src'],
-  '@sentry/hub': ['../hub/src'],
-  '@sentry/types': ['../types/src'],
-  '@sentry/minimal': ['../minimal/src'],
-};
-
 const plugins = [
   typescript({
     tsconfig: 'tsconfig.build.json',
     tsconfigOverride: {
       compilerOptions: {
         declaration: false,
-        declarationMap: false,
         module: 'ES2015',
         paths,
       },
@@ -43,9 +35,9 @@ const plugins = [
     include: ['*.ts+(|x)', '**/*.ts+(|x)', '../**/*.ts+(|x)'],
   }),
   resolve({
-    module: true,
-    browser: false,
-    modulesOnly: false,
+    browser: true,
+    module: false,
+    modulesOnly: true,
   }),
   commonjs(),
 ];
@@ -72,14 +64,14 @@ export default [
     ...bundleConfig,
     output: {
       ...bundleConfig.output,
-      file: 'build/bundle.js',
+      file: 'bundles/bundle.js',
     },
   },
   {
     ...bundleConfig,
     output: {
       ...bundleConfig.output,
-      file: 'build/bundle.min.js',
+      file: 'bundles/bundle.min.js',
     },
     // Uglify has to be at the end of compilation, BUT before the license banner
     plugins: bundleConfig.plugins
@@ -87,54 +79,5 @@ export default [
       .concat(terserInstance)
       .concat(bundleConfig.plugins.slice(-1)),
   },
-  {
-    ...bundleConfig,
-    output: {
-      ...bundleConfig.output,
-      file: 'build/bundle.es6.js',
-    },
-    plugins: [
-      typescript({
-        tsconfig: 'tsconfig.build.json',
-        tsconfigOverride: {
-          compilerOptions: {
-            declaration: false,
-            declarationMap: false,
-            module: 'ES2015',
-            paths,
-            target: 'es6',
-          },
-        },
-        include: ['*.ts+(|x)', '**/*.ts+(|x)', '../**/*.ts+(|x)'],
-      }),
-      ...plugins.slice(1),
-    ],
-  },
-  {
-    ...bundleConfig,
-    output: {
-      ...bundleConfig.output,
-      file: 'build/bundle.es6.min.js',
-    },
-    plugins: [
-      typescript({
-        tsconfig: 'tsconfig.build.json',
-        tsconfigOverride: {
-          compilerOptions: {
-            declaration: false,
-            declarationMap: false,
-            module: 'ES2015',
-            paths,
-            target: 'es6',
-          },
-        },
-        include: ['*.ts+(|x)', '**/*.ts+(|x)', '../**/*.ts+(|x)'],
-      }),
-      ...plugins
-        .slice(1)
-        .slice(0, -1)
-        .concat(terserInstance)
-        .concat(bundleConfig.plugins.slice(-1)),
-    ],
-  },
+  ...generate_cfg('browser'),
 ];
diff --git a/packages/browser/tsconfig.build.json b/packages/browser/tsconfig.build.json
index a263a085c70a..7803c9103a6f 100644
--- a/packages/browser/tsconfig.build.json
+++ b/packages/browser/tsconfig.build.json
@@ -2,7 +2,12 @@
   "extends": "../../tsconfig.json",
   "compilerOptions": {
     "baseUrl": ".",
-    "outDir": "dist"
+    "outDir": "dist",
+    "paths": {
+      "@sentry/*": [
+        "../*/dist"
+      ]
+    }
   },
   "include": ["src/**/*"]
 }
diff --git a/packages/browser/tsconfig.esm.json b/packages/browser/tsconfig.esm.json
deleted file mode 100644
index 33a3842217d4..000000000000
--- a/packages/browser/tsconfig.esm.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "extends": "../../tsconfig.esm.json",
-  "compilerOptions": {
-    "baseUrl": ".",
-    "outDir": "esm"
-  },
-  "include": ["src/**/*"]
-}
diff --git a/packages/browser/tsconfig.esm5.json b/packages/browser/tsconfig.esm5.json
new file mode 100644
index 000000000000..8ed7ee841f61
--- /dev/null
+++ b/packages/browser/tsconfig.esm5.json
@@ -0,0 +1,13 @@
+{
+  "extends": "../../tsconfig.esm5.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "outDir": "esm5",
+    "paths": {
+      "@sentry/*": [
+        "../*/esm5"
+      ]
+    }
+  },
+  "include": ["src/**/*"]
+}
diff --git a/packages/browser/tsconfig.esmnext.json b/packages/browser/tsconfig.esmnext.json
new file mode 100644
index 000000000000..2c135111d7b1
--- /dev/null
+++ b/packages/browser/tsconfig.esmnext.json
@@ -0,0 +1,13 @@
+{
+  "extends": "../../tsconfig.esmnext.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "outDir": "esmnext",
+    "paths": {
+      "@sentry/*": [
+        "../*/esmnext"
+      ]
+    }
+  },
+  "include": ["src/**/*"]
+}
diff --git a/packages/browser/tsconfig.json b/packages/browser/tsconfig.json
index 15c1a0af3c44..6bee1e81ee36 100644
--- a/packages/browser/tsconfig.json
+++ b/packages/browser/tsconfig.json
@@ -4,6 +4,11 @@
   "exclude": ["dist"],
   "compilerOptions": {
     "rootDir": ".",
-    "types": ["node", "mocha", "chai", "sinon"]
+    "types": ["node", "mocha", "chai", "sinon"],
+    "paths": {
+      "@sentry/*": [
+        "../*/src"
+      ]
+    }
   }
 }
diff --git a/packages/core/package.json b/packages/core/package.json
index 741ffa07ffd2..0f415fcae17f 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -10,8 +10,14 @@
     "node": ">=6"
   },
   "main": "dist/index.js",
-  "module": "esm/index.js",
-  "types": "dist/index.d.ts",
+  "module": "./bundles/core.fesm5.js",
+  "esnext": "./bundles/core.fesmnext.js",
+  "esm5": "./esm5/index.js",
+  "esmnext": "./esmnext/index.js",
+  "fesm5": "./bundles/core.fesm5.js",
+  "fesmnext": "./bundles/core.fesmnext.js",
+  "jsnext:main": "./esmnext/index.js",
+  "typings": "./dist/index.d.ts",
   "publishConfig": {
     "access": "public"
   },
@@ -28,16 +34,23 @@
     "prettier": "^1.16.4",
     "prettier-check": "^2.0.0",
     "rimraf": "^2.6.3",
+    "rollup-plugin-typescript2": "^0.21.0",
     "tslint": "^5.14.0",
     "typescript": "^3.3.3333"
   },
   "scripts": {
-    "build": "run-p build:es5 build:esm",
-    "build:es5": "tsc -p tsconfig.build.json",
-    "build:esm": "tsc -p tsconfig.esm.json",
-    "build:watch": "run-p build:watch:es5 build:watch:esm",
-    "build:watch:es5": "tsc -p tsconfig.build.json -w --preserveWatchOutput",
-    "build:watch:esm": "tsc -p tsconfig.esm.json -w --preserveWatchOutput",
+    "build": "run-s build:split build:bundle",
+    "build:split": "run-p build:dist build:esm5 build:esmnext",
+    "build:bundle": "rollup --config",
+    "build:dist": "tsc -p tsconfig.build.json",
+    "build:esm5": "tsc -p tsconfig.esm5.json",
+    "build:esmnext": "tsc -p tsconfig.esmnext.json",
+    "build:watch": "run-s build:split build:watch:loop",
+    "build:watch:loop": "run-p build:watch:dist build:watch:esm5 build:watch:esmnext build:watch:bundle",
+    "build:watch:bundle": "rollup --config --watch",
+    "build:watch:dist": "tsc -wp tsconfig.build.json",
+    "build:watch:esm5": "tsc -wp tsconfig.esm5.json",
+    "build:watch:esmnext": "tsc -wp tsconfig.esmnext.json",
     "clean": "rimraf dist coverage",
     "link:yarn": "yarn link",
     "lint": "run-s lint:prettier lint:tslint",
diff --git a/packages/core/rollup.config.js b/packages/core/rollup.config.js
new file mode 100644
index 000000000000..7e568a5d24f2
--- /dev/null
+++ b/packages/core/rollup.config.js
@@ -0,0 +1,5 @@
+import { generate_cfg } from '../../resources/rollup.base';
+
+export default [
+  ...generate_cfg('core'),
+];
diff --git a/packages/core/tsconfig.build.json b/packages/core/tsconfig.build.json
index a263a085c70a..791b0686b990 100644
--- a/packages/core/tsconfig.build.json
+++ b/packages/core/tsconfig.build.json
@@ -2,7 +2,14 @@
   "extends": "../../tsconfig.json",
   "compilerOptions": {
     "baseUrl": ".",
-    "outDir": "dist"
+    "outDir": "dist",
+    "paths": {
+      "@sentry/*": [
+        "../*/dist"
+      ]
+    }
   },
-  "include": ["src/**/*"]
+  "include": [
+    "src/**/*"
+  ]
 }
diff --git a/packages/core/tsconfig.esm.json b/packages/core/tsconfig.esm.json
deleted file mode 100644
index 33a3842217d4..000000000000
--- a/packages/core/tsconfig.esm.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "extends": "../../tsconfig.esm.json",
-  "compilerOptions": {
-    "baseUrl": ".",
-    "outDir": "esm"
-  },
-  "include": ["src/**/*"]
-}
diff --git a/packages/core/tsconfig.esm5.json b/packages/core/tsconfig.esm5.json
new file mode 100644
index 000000000000..8ed7ee841f61
--- /dev/null
+++ b/packages/core/tsconfig.esm5.json
@@ -0,0 +1,13 @@
+{
+  "extends": "../../tsconfig.esm5.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "outDir": "esm5",
+    "paths": {
+      "@sentry/*": [
+        "../*/esm5"
+      ]
+    }
+  },
+  "include": ["src/**/*"]
+}
diff --git a/packages/core/tsconfig.esmnext.json b/packages/core/tsconfig.esmnext.json
new file mode 100644
index 000000000000..2c135111d7b1
--- /dev/null
+++ b/packages/core/tsconfig.esmnext.json
@@ -0,0 +1,13 @@
+{
+  "extends": "../../tsconfig.esmnext.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "outDir": "esmnext",
+    "paths": {
+      "@sentry/*": [
+        "../*/esmnext"
+      ]
+    }
+  },
+  "include": ["src/**/*"]
+}
diff --git a/packages/core/tsconfig.json b/packages/core/tsconfig.json
index 165bfebc2d23..2f4d7cfe5c04 100644
--- a/packages/core/tsconfig.json
+++ b/packages/core/tsconfig.json
@@ -4,6 +4,11 @@
   "exclude": ["dist"],
   "compilerOptions": {
     "rootDir": ".",
-    "types": ["node", "jest"]
+    "types": ["node", "jest"],
+    "paths": {
+      "@sentry/*": [
+        "../*/src"
+      ]
+    }
   }
 }
diff --git a/packages/hub/package.json b/packages/hub/package.json
index cbbe73a61579..d8981b602ffd 100644
--- a/packages/hub/package.json
+++ b/packages/hub/package.json
@@ -9,9 +9,15 @@
   "engines": {
     "node": ">=6"
   },
-  "main": "dist/index.js",
-  "module": "esm/index.js",
-  "types": "dist/index.d.ts",
+  "main": "./dist/index.js",
+  "module": "./bundles/hub.fesm5.js",
+  "esnext": "./bundles/hub.fesmnext.js",
+  "esm5": "./esm5/index.js",
+  "esmnext": "./esmnext/index.js",
+  "fesm5": "./bundles/hub.fesm5.js",
+  "fesmnext": "./bundles/hub.fesmnext.js",
+  "jsnext:main": "./esmnext/index.js",
+  "typings": "./dist/index.d.ts",
   "publishConfig": {
     "access": "public"
   },
@@ -26,16 +32,23 @@
     "prettier": "^1.16.4",
     "prettier-check": "^2.0.0",
     "rimraf": "^2.6.3",
+    "rollup-plugin-typescript2": "^0.21.0",
     "tslint": "^5.14.0",
     "typescript": "^3.3.3333"
   },
   "scripts": {
-    "build": "run-p build:es5 build:esm",
-    "build:es5": "tsc -p tsconfig.build.json",
-    "build:esm": "tsc -p tsconfig.esm.json",
-    "build:watch": "run-p build:watch:es5 build:watch:esm",
-    "build:watch:es5": "tsc -p tsconfig.build.json -w --preserveWatchOutput",
-    "build:watch:esm": "tsc -p tsconfig.esm.json -w --preserveWatchOutput",
+    "build": "run-s build:split build:bundle",
+    "build:split": "run-p build:dist build:esm5 build:esmnext",
+    "build:bundle": "rollup --config",
+    "build:dist": "tsc -p tsconfig.build.json",
+    "build:esm5": "tsc -p tsconfig.esm5.json",
+    "build:esmnext": "tsc -p tsconfig.esmnext.json",
+    "build:watch": "run-s build:split build:watch:loop",
+    "build:watch:loop": "run-p build:watch:dist build:watch:esm5 build:watch:esmnext build:watch:bundle",
+    "build:watch:bundle": "rollup --config --watch",
+    "build:watch:dist": "tsc -wp tsconfig.build.json",
+    "build:watch:esm5": "tsc -wp tsconfig.esm5.json",
+    "build:watch:esmnext": "tsc -wp tsconfig.esmnext.json",
     "clean": "rimraf dist coverage",
     "link:yarn": "yarn link",
     "lint": "run-s lint:prettier lint:tslint",
diff --git a/packages/hub/rollup.config.js b/packages/hub/rollup.config.js
new file mode 100644
index 000000000000..f2b133a74964
--- /dev/null
+++ b/packages/hub/rollup.config.js
@@ -0,0 +1,5 @@
+import { generate_cfg } from '../../resources/rollup.base';
+
+export default [
+  ...generate_cfg('hub'),
+];
diff --git a/packages/hub/tsconfig.build.json b/packages/hub/tsconfig.build.json
index c0816d87b819..d9482be2fa93 100644
--- a/packages/hub/tsconfig.build.json
+++ b/packages/hub/tsconfig.build.json
@@ -3,7 +3,11 @@
   "compilerOptions": {
     "baseUrl": ".",
     "outDir": "dist",
-    "rootDir": "src"
+    "rootDir": "src",
+    "types": ["node"],
+    "paths": {
+      "@sentry/*": ["../*/dist"]
+    }
   },
   "include": ["src/**/*.ts"]
 }
diff --git a/packages/hub/tsconfig.esm.json b/packages/hub/tsconfig.esm.json
deleted file mode 100644
index 33a3842217d4..000000000000
--- a/packages/hub/tsconfig.esm.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "extends": "../../tsconfig.esm.json",
-  "compilerOptions": {
-    "baseUrl": ".",
-    "outDir": "esm"
-  },
-  "include": ["src/**/*"]
-}
diff --git a/packages/hub/tsconfig.esm5.json b/packages/hub/tsconfig.esm5.json
new file mode 100644
index 000000000000..277872853219
--- /dev/null
+++ b/packages/hub/tsconfig.esm5.json
@@ -0,0 +1,12 @@
+{
+  "extends": "../../tsconfig.esm5.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "outDir": "esm5",
+    "rootDir": "src",
+    "paths": {
+      "@sentry/*": ["../*/esm5"]
+    }
+  },
+  "include": ["src/**/*"]
+}
diff --git a/packages/hub/tsconfig.esmnext.json b/packages/hub/tsconfig.esmnext.json
new file mode 100644
index 000000000000..748040a3b1ee
--- /dev/null
+++ b/packages/hub/tsconfig.esmnext.json
@@ -0,0 +1,12 @@
+{
+  "extends": "../../tsconfig.esmnext.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "outDir": "esmnext",
+    "rootDir": "src",
+    "paths": {
+      "@sentry/*": ["../*/esmnext"]
+    }
+  },
+  "include": ["src/**/*"]
+}
diff --git a/packages/hub/tsconfig.json b/packages/hub/tsconfig.json
index 55b38e135ae2..ebf7fc707526 100644
--- a/packages/hub/tsconfig.json
+++ b/packages/hub/tsconfig.json
@@ -1,9 +1,14 @@
 {
   "extends": "./tsconfig.build.json",
-  "include": ["src/**/*.ts", "test/**/*.ts"],
-  "exclude": ["dist"],
   "compilerOptions": {
     "rootDir": ".",
-    "types": ["node", "jest"]
-  }
+    "types": ["node", "jest"],
+    "paths": {
+      "@sentry/*": [
+        "../*/src"
+      ]
+    }
+  },
+  "include": ["src/**/*.ts", "test/**/*.ts"],
+  "exclude": ["dist"]
 }
diff --git a/packages/integrations/package.json b/packages/integrations/package.json
index 9430806ae4a1..d1b3e71ead32 100644
--- a/packages/integrations/package.json
+++ b/packages/integrations/package.json
@@ -12,10 +12,15 @@
   "publishConfig": {
     "access": "public"
   },
-  "main": "dist/index.js",
-  "module": "esm/index.js",
-  "browser": "dist/index.js",
-  "types": "dist/index.d.ts",
+  "main": "./dist/index.js",
+  "module": "./bundles/integrations.fesm5.js",
+  "esnext": "./bundles/integrations.fesmnext.js",
+  "esm5": "./esm5/index.js",
+  "esmnext": "./esmnext/index.js",
+  "fesm5": "./bundles/integrations.fesm5.js",
+  "fesmnext": "./bundles/integrations.fesmnext.js",
+  "jsnext:main": "./esmnext/index.js",
+  "typings": "./dist/index.d.ts",
   "dependencies": {
     "@sentry/types": "5.1.0",
     "@sentry/utils": "5.1.2"
@@ -31,18 +36,23 @@
     "rollup-plugin-commonjs": "^9.2.1",
     "rollup-plugin-node-resolve": "^4.0.1",
     "rollup-plugin-terser": "^4.0.4",
-    "rollup-plugin-typescript2": "^0.20.1",
+    "rollup-plugin-typescript2": "^0.21.0",
     "tslint": "^5.14.0",
     "typescript": "^3.3.3333"
   },
   "scripts": {
-    "build": "run-p build:es5 build:esm build:bundle",
-    "build:es5": "tsc -p tsconfig.build.json",
-    "build:esm": "tsc -p tsconfig.esm.json",
-    "build:watch": "run-p build:watch:es5 build:watch:esm",
-    "build:watch:es5": "tsc -p tsconfig.build.json -w --preserveWatchOutput",
-    "build:watch:esm": "tsc -p tsconfig.esm.json -w --preserveWatchOutput",
+    "build": "run-s build:split build:bundle",
+    "build:split": "run-p build:dist build:esm5 build:esmnext",
     "build:bundle": "rollup --config",
+    "build:dist": "tsc -p tsconfig.build.json",
+    "build:esm5": "tsc -p tsconfig.esm5.json",
+    "build:esmnext": "tsc -p tsconfig.esmnext.json",
+    "build:watch": "run-s build:split build:watch:loop",
+    "build:watch:loop": "run-p build:watch:dist build:watch:esm5 build:watch:esmnext build:watch:bundle",
+    "build:watch:bundle": "rollup --config --watch",
+    "build:watch:dist": "tsc -wp tsconfig.build.json",
+    "build:watch:esm5": "tsc -wp tsconfig.esm5.json",
+    "build:watch:esmnext": "tsc -wp tsconfig.esmnext.json",
     "clean": "rimraf dist coverage esm build .rpt2_cache",
     "link:yarn": "yarn link",
     "lint": "run-s lint:prettier lint:tslint",
diff --git a/packages/integrations/rollup.config.js b/packages/integrations/rollup.config.js
index ae793bc91157..91778e23197d 100644
--- a/packages/integrations/rollup.config.js
+++ b/packages/integrations/rollup.config.js
@@ -3,6 +3,7 @@ import typescript from 'rollup-plugin-typescript2';
 import resolve from 'rollup-plugin-node-resolve';
 import commonjs from 'rollup-plugin-commonjs';
 import * as fs from 'fs';
+import { generate_cfg } from "../../resources/rollup.base";
 
 const terserInstance = terser({
   mangle: {
@@ -86,4 +87,7 @@ function loadAllIntegrations() {
   return builds;
 }
 
-export default loadAllIntegrations();
+export default [
+  ...loadAllIntegrations(),
+  ...generate_cfg('integrations'),
+];
diff --git a/packages/integrations/tsconfig.build.json b/packages/integrations/tsconfig.build.json
index 92cb0f228930..5c6a76966a6c 100644
--- a/packages/integrations/tsconfig.build.json
+++ b/packages/integrations/tsconfig.build.json
@@ -4,7 +4,12 @@
     "declarationMap": false,
     "baseUrl": ".",
     "outDir": "dist",
-    "types": ["node"]
+    "types": ["node"],
+    "paths": {
+      "@sentry/*": [
+        "../*/dist"
+      ]
+    }
   },
   "include": ["src/**/*.ts"]
 }
diff --git a/packages/integrations/tsconfig.esm.json b/packages/integrations/tsconfig.esm.json
deleted file mode 100644
index f374261494cb..000000000000
--- a/packages/integrations/tsconfig.esm.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-  "extends": "../../tsconfig.esm.json",
-  "compilerOptions": {
-    "declarationMap": false,
-    "baseUrl": ".",
-    "outDir": "esm",
-    "types": ["node"]
-  },
-  "include": ["src/**/*"]
-}
diff --git a/packages/integrations/tsconfig.esm5.json b/packages/integrations/tsconfig.esm5.json
new file mode 100644
index 000000000000..8ed7ee841f61
--- /dev/null
+++ b/packages/integrations/tsconfig.esm5.json
@@ -0,0 +1,13 @@
+{
+  "extends": "../../tsconfig.esm5.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "outDir": "esm5",
+    "paths": {
+      "@sentry/*": [
+        "../*/esm5"
+      ]
+    }
+  },
+  "include": ["src/**/*"]
+}
diff --git a/packages/integrations/tsconfig.esmnext.json b/packages/integrations/tsconfig.esmnext.json
new file mode 100644
index 000000000000..2c135111d7b1
--- /dev/null
+++ b/packages/integrations/tsconfig.esmnext.json
@@ -0,0 +1,13 @@
+{
+  "extends": "../../tsconfig.esmnext.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "outDir": "esmnext",
+    "paths": {
+      "@sentry/*": [
+        "../*/esmnext"
+      ]
+    }
+  },
+  "include": ["src/**/*"]
+}
diff --git a/packages/integrations/tsconfig.json b/packages/integrations/tsconfig.json
index 6564f8267130..e5a1158668f3 100644
--- a/packages/integrations/tsconfig.json
+++ b/packages/integrations/tsconfig.json
@@ -5,6 +5,11 @@
   "compilerOptions": {
     "declarationMap": false,
     "rootDir": ".",
-    "types": ["node", "jest"]
+    "types": ["node", "jest"],
+    "paths": {
+      "@sentry/*": [
+        "../*/src"
+      ]
+    }
   }
 }
diff --git a/packages/minimal/package.json b/packages/minimal/package.json
index 09dd2c7d556b..3b1afdd446b1 100644
--- a/packages/minimal/package.json
+++ b/packages/minimal/package.json
@@ -9,9 +9,15 @@
   "engines": {
     "node": ">=6"
   },
-  "main": "dist/index.js",
-  "module": "esm/index.js",
-  "types": "dist/index.d.ts",
+  "main": "./dist/index.js",
+  "module": "./bundles/minimal.fesm5.js",
+  "esnext": "./bundles/minimal.fesmnext.js",
+  "esm5": "./esm5/index.js",
+  "esmnext": "./esmnext/index.js",
+  "fesm5": "./bundles/minimal.fesm5.js",
+  "fesmnext": "./bundles/minimal.fesmnext.js",
+  "jsnext:main": "./esmnext/index.js",
+  "typings": "./dist/index.d.ts",
   "publishConfig": {
     "access": "public"
   },
@@ -26,16 +32,23 @@
     "prettier": "^1.16.4",
     "prettier-check": "^2.0.0",
     "rimraf": "^2.6.3",
+    "rollup-plugin-typescript2": "^0.21.0",
     "tslint": "^5.14.0",
     "typescript": "^3.3.3333"
   },
   "scripts": {
-    "build": "run-p build:es5 build:esm",
-    "build:es5": "tsc -p tsconfig.build.json",
-    "build:esm": "tsc -p tsconfig.esm.json",
-    "build:watch": "run-p build:watch:es5 build:watch:esm",
-    "build:watch:es5": "tsc -p tsconfig.build.json -w --preserveWatchOutput",
-    "build:watch:esm": "tsc -p tsconfig.esm.json -w --preserveWatchOutput",
+    "build": "run-s build:split build:bundle",
+    "build:split": "run-p build:dist build:esm5 build:esmnext",
+    "build:bundle": "rollup --config",
+    "build:dist": "tsc -p tsconfig.build.json",
+    "build:esm5": "tsc -p tsconfig.esm5.json",
+    "build:esmnext": "tsc -p tsconfig.esmnext.json",
+    "build:watch": "run-s build:split build:watch:loop",
+    "build:watch:loop": "run-p build:watch:dist build:watch:esm5 build:watch:esmnext build:watch:bundle",
+    "build:watch:bundle": "rollup --config --watch",
+    "build:watch:dist": "tsc -wp tsconfig.build.json",
+    "build:watch:esm5": "tsc -wp tsconfig.esm5.json",
+    "build:watch:esmnext": "tsc -wp tsconfig.esmnext.json",
     "clean": "rimraf dist coverage",
     "link:yarn": "yarn link",
     "lint": "run-s lint:prettier lint:tslint",
diff --git a/packages/minimal/rollup.config.js b/packages/minimal/rollup.config.js
new file mode 100644
index 000000000000..d49541cdfa13
--- /dev/null
+++ b/packages/minimal/rollup.config.js
@@ -0,0 +1,5 @@
+import { generate_cfg } from '../../resources/rollup.base';
+
+export default [
+  ...generate_cfg('minimal'),
+];
diff --git a/packages/minimal/tsconfig.build.json b/packages/minimal/tsconfig.build.json
index c0816d87b819..9e40d479ee7a 100644
--- a/packages/minimal/tsconfig.build.json
+++ b/packages/minimal/tsconfig.build.json
@@ -3,7 +3,12 @@
   "compilerOptions": {
     "baseUrl": ".",
     "outDir": "dist",
-    "rootDir": "src"
+    "rootDir": "src",
+    "paths": {
+      "@sentry/*": [
+        "../*/dist"
+      ]
+    }
   },
   "include": ["src/**/*.ts"]
 }
diff --git a/packages/minimal/tsconfig.esm.json b/packages/minimal/tsconfig.esm.json
deleted file mode 100644
index 33a3842217d4..000000000000
--- a/packages/minimal/tsconfig.esm.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "extends": "../../tsconfig.esm.json",
-  "compilerOptions": {
-    "baseUrl": ".",
-    "outDir": "esm"
-  },
-  "include": ["src/**/*"]
-}
diff --git a/packages/minimal/tsconfig.esm5.json b/packages/minimal/tsconfig.esm5.json
new file mode 100644
index 000000000000..8ed7ee841f61
--- /dev/null
+++ b/packages/minimal/tsconfig.esm5.json
@@ -0,0 +1,13 @@
+{
+  "extends": "../../tsconfig.esm5.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "outDir": "esm5",
+    "paths": {
+      "@sentry/*": [
+        "../*/esm5"
+      ]
+    }
+  },
+  "include": ["src/**/*"]
+}
diff --git a/packages/minimal/tsconfig.esmnext.json b/packages/minimal/tsconfig.esmnext.json
new file mode 100644
index 000000000000..2c135111d7b1
--- /dev/null
+++ b/packages/minimal/tsconfig.esmnext.json
@@ -0,0 +1,13 @@
+{
+  "extends": "../../tsconfig.esmnext.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "outDir": "esmnext",
+    "paths": {
+      "@sentry/*": [
+        "../*/esmnext"
+      ]
+    }
+  },
+  "include": ["src/**/*"]
+}
diff --git a/packages/minimal/tsconfig.json b/packages/minimal/tsconfig.json
index 7f080cf686bc..cb03f9c4cfe9 100644
--- a/packages/minimal/tsconfig.json
+++ b/packages/minimal/tsconfig.json
@@ -4,6 +4,11 @@
   "exclude": ["dist"],
   "compilerOptions": {
     "rootDir": ".",
-    "types": ["node", "jest"]
+    "types": ["node", "jest"],
+    "paths": {
+      "@sentry/*": [
+        "../*/src"
+      ]
+    }
   }
 }
diff --git a/packages/node/tsconfig.build.json b/packages/node/tsconfig.build.json
index a263a085c70a..b61cb66dd7ef 100644
--- a/packages/node/tsconfig.build.json
+++ b/packages/node/tsconfig.build.json
@@ -2,7 +2,12 @@
   "extends": "../../tsconfig.json",
   "compilerOptions": {
     "baseUrl": ".",
-    "outDir": "dist"
+    "outDir": "dist",
+    "paths": {
+      "@sentry/*": [
+        "../*/src"
+      ]
+    }
   },
   "include": ["src/**/*"]
 }
diff --git a/packages/node/tsconfig.esm.json b/packages/node/tsconfig.esm.json
index 33a3842217d4..24d63ce93aaa 100644
--- a/packages/node/tsconfig.esm.json
+++ b/packages/node/tsconfig.esm.json
@@ -2,7 +2,12 @@
   "extends": "../../tsconfig.esm.json",
   "compilerOptions": {
     "baseUrl": ".",
-    "outDir": "esm"
+    "outDir": "esm",
+    "paths": {
+      "@sentry/*": [
+        "../*/src"
+      ]
+    }
   },
   "include": ["src/**/*"]
 }
diff --git a/packages/node/tsconfig.json b/packages/node/tsconfig.json
index 55b38e135ae2..b02385fb796c 100644
--- a/packages/node/tsconfig.json
+++ b/packages/node/tsconfig.json
@@ -4,6 +4,11 @@
   "exclude": ["dist"],
   "compilerOptions": {
     "rootDir": ".",
-    "types": ["node", "jest"]
+    "types": ["node", "jest"],
+    "paths": {
+      "@sentry/*": [
+        "../*/src"
+      ]
+    }
   }
 }
diff --git a/packages/opentracing/package.json b/packages/opentracing/package.json
index a438ce095678..ff2589cde6dd 100644
--- a/packages/opentracing/package.json
+++ b/packages/opentracing/package.json
@@ -9,9 +9,15 @@
   "engines": {
     "node": ">=6"
   },
-  "main": "dist/index.js",
-  "module": "esm/index.js",
-  "types": "dist/index.d.ts",
+  "main": "./dist/index.js",
+  "module": "./bundles/opentracing.fesm5.js",
+  "esnext": "./bundles/opentracing.fesmnext.js",
+  "esm5": "./esm5/index.js",
+  "esmnext": "./esmnext/index.js",
+  "fesm5": "./bundles/opentracing.fesm5.js",
+  "fesmnext": "./bundles/opentracing.fesmnext.js",
+  "jsnext:main": "./esmnext/index.js",
+  "typings": "./dist/index.d.ts",
   "publishConfig": {
     "access": "public"
   },
@@ -27,16 +33,23 @@
     "prettier": "^1.16.4",
     "prettier-check": "^2.0.0",
     "rimraf": "^2.6.3",
+    "rollup-plugin-typescript2": "^0.21.0",
     "tslint": "^5.14.0",
-    "typescript": "^3.3.3333"
+    "typescript": "^3.4.5"
   },
   "scripts": {
-    "build": "run-p build:es5 build:esm",
-    "build:es5": "tsc -p tsconfig.build.json",
-    "build:esm": "tsc -p tsconfig.esm.json",
-    "build:watch": "run-p build:watch:es5 build:watch:esm",
-    "build:watch:es5": "tsc -p tsconfig.build.json -w --preserveWatchOutput",
-    "build:watch:esm": "tsc -p tsconfig.esm.json -w --preserveWatchOutput",
+    "build": "run-s build:split build:bundle",
+    "build:split": "run-p build:dist build:esm5 build:esmnext",
+    "build:bundle": "rollup --config",
+    "build:dist": "tsc -p tsconfig.build.json",
+    "build:esm5": "tsc -p tsconfig.esm5.json",
+    "build:esmnext": "tsc -p tsconfig.esmnext.json",
+    "build:watch": "run-s build:split build:watch:loop",
+    "build:watch:loop": "run-p build:watch:dist build:watch:esm5 build:watch:esmnext build:watch:bundle",
+    "build:watch:bundle": "rollup --config --watch",
+    "build:watch:dist": "tsc -wp tsconfig.build.json",
+    "build:watch:esm5": "tsc -wp tsconfig.esm5.json",
+    "build:watch:esmnext": "tsc -wp tsconfig.esmnext.json",
     "clean": "rimraf dist coverage",
     "link:yarn": "yarn link",
     "lint": "run-s lint:prettier lint:tslint",
diff --git a/packages/opentracing/rollup.config.js b/packages/opentracing/rollup.config.js
new file mode 100644
index 000000000000..d65fd024e3cb
--- /dev/null
+++ b/packages/opentracing/rollup.config.js
@@ -0,0 +1,5 @@
+import { generate_cfg } from '../../resources/rollup.base';
+
+export default [
+  ...generate_cfg('opentracing'),
+];
diff --git a/packages/opentracing/tsconfig.build.json b/packages/opentracing/tsconfig.build.json
index c0816d87b819..9e40d479ee7a 100644
--- a/packages/opentracing/tsconfig.build.json
+++ b/packages/opentracing/tsconfig.build.json
@@ -3,7 +3,12 @@
   "compilerOptions": {
     "baseUrl": ".",
     "outDir": "dist",
-    "rootDir": "src"
+    "rootDir": "src",
+    "paths": {
+      "@sentry/*": [
+        "../*/dist"
+      ]
+    }
   },
   "include": ["src/**/*.ts"]
 }
diff --git a/packages/opentracing/tsconfig.esm.json b/packages/opentracing/tsconfig.esm.json
deleted file mode 100644
index 33a3842217d4..000000000000
--- a/packages/opentracing/tsconfig.esm.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "extends": "../../tsconfig.esm.json",
-  "compilerOptions": {
-    "baseUrl": ".",
-    "outDir": "esm"
-  },
-  "include": ["src/**/*"]
-}
diff --git a/packages/opentracing/tsconfig.esm5.json b/packages/opentracing/tsconfig.esm5.json
new file mode 100644
index 000000000000..8ed7ee841f61
--- /dev/null
+++ b/packages/opentracing/tsconfig.esm5.json
@@ -0,0 +1,13 @@
+{
+  "extends": "../../tsconfig.esm5.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "outDir": "esm5",
+    "paths": {
+      "@sentry/*": [
+        "../*/esm5"
+      ]
+    }
+  },
+  "include": ["src/**/*"]
+}
diff --git a/packages/opentracing/tsconfig.esmnext.json b/packages/opentracing/tsconfig.esmnext.json
new file mode 100644
index 000000000000..2c135111d7b1
--- /dev/null
+++ b/packages/opentracing/tsconfig.esmnext.json
@@ -0,0 +1,13 @@
+{
+  "extends": "../../tsconfig.esmnext.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "outDir": "esmnext",
+    "paths": {
+      "@sentry/*": [
+        "../*/esmnext"
+      ]
+    }
+  },
+  "include": ["src/**/*"]
+}
diff --git a/packages/opentracing/tsconfig.json b/packages/opentracing/tsconfig.json
index 7f080cf686bc..cf096eb1f4c8 100644
--- a/packages/opentracing/tsconfig.json
+++ b/packages/opentracing/tsconfig.json
@@ -1,9 +1,26 @@
 {
   "extends": "./tsconfig.build.json",
-  "include": ["src/**/*.ts"],
-  "exclude": ["dist"],
   "compilerOptions": {
+    "baseUrl": ".",
     "rootDir": ".",
-    "types": ["node", "jest"]
-  }
+    "types": ["node", "jest"],
+    "paths": {
+      "@sentry/*": [
+        "../*/src"
+      ]
+    }
+  },
+  "references": [
+    {
+      "path": "../utils"
+    },
+    {
+      "path": "../types"
+    },
+    {
+      "path": "../hub"
+    }
+  ],
+  "include": ["src/**/*.ts"],
+  "exclude": ["dist"]
 }
diff --git a/packages/types/package.json b/packages/types/package.json
index a4020a9bc864..a6df28950622 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -9,9 +9,15 @@
   "engines": {
     "node": ">=6"
   },
-  "main": "dist/index.js",
-  "module": "esm/index.js",
-  "types": "dist/index.d.ts",
+  "main": "./dist/index.js",
+  "module": "./bundles/types.fesm5.js",
+  "esnext": "./bundles/types.fesmnext.js",
+  "esm5": "./esm5/index.js",
+  "esmnext": "./esmnext/index.js",
+  "fesm5": "./bundles/types.fesm5.js",
+  "fesmnext": "./bundles/types.fesmnext.js",
+  "jsnext:main": "./esmnext/index.js",
+  "typings": "./dist/index.d.ts",
   "publishConfig": {
     "access": "public"
   },
@@ -19,16 +25,23 @@
     "npm-run-all": "^4.1.2",
     "prettier": "^1.16.4",
     "prettier-check": "^2.0.0",
+    "rollup-plugin-typescript2": "^0.21.0",
     "tslint": "^5.14.0",
-    "typescript": "^3.3.3333"
+    "typescript": "^3.4.5"
   },
   "scripts": {
-    "build": "run-p build:es5 build:esm",
-    "build:es5": "tsc -p tsconfig.build.json",
-    "build:esm": "tsc -p tsconfig.esm.json",
-    "build:watch": "run-p build:watch:es5 build:watch:esm",
-    "build:watch:es5": "tsc -p tsconfig.build.json -w --preserveWatchOutput",
-    "build:watch:esm": "tsc -p tsconfig.esm.json -w --preserveWatchOutput",
+    "build": "run-s build:split build:bundle",
+    "build:split": "run-p build:dist build:esm5 build:esmnext",
+    "build:bundle": "rollup --config",
+    "build:dist": "tsc -p tsconfig.build.json",
+    "build:esm5": "tsc -p tsconfig.esm5.json",
+    "build:esmnext": "tsc -p tsconfig.esmnext.json",
+    "build:watch": "run-s build:split build:watch:loop",
+    "build:watch:loop": "run-p build:watch:dist build:watch:esm5 build:watch:esmnext build:watch:bundle",
+    "build:watch:bundle": "rollup --config --watch",
+    "build:watch:dist": "tsc -wp tsconfig.build.json",
+    "build:watch:esm5": "tsc -wp tsconfig.esm5.json",
+    "build:watch:esmnext": "tsc -wp tsconfig.esmnext.json",
     "link:yarn": "yarn link",
     "lint": "run-s lint:prettier lint:tslint",
     "lint:prettier": "prettier-check \"{src,test}/**/*.ts\"",
diff --git a/packages/types/rollup.config.js b/packages/types/rollup.config.js
new file mode 100644
index 000000000000..39480083c6f3
--- /dev/null
+++ b/packages/types/rollup.config.js
@@ -0,0 +1,5 @@
+import { generate_cfg } from '../../resources/rollup.base';
+
+export default [
+  ...generate_cfg('types'),
+];
diff --git a/packages/types/tsconfig.build.json b/packages/types/tsconfig.build.json
index c0816d87b819..9e40d479ee7a 100644
--- a/packages/types/tsconfig.build.json
+++ b/packages/types/tsconfig.build.json
@@ -3,7 +3,12 @@
   "compilerOptions": {
     "baseUrl": ".",
     "outDir": "dist",
-    "rootDir": "src"
+    "rootDir": "src",
+    "paths": {
+      "@sentry/*": [
+        "../*/dist"
+      ]
+    }
   },
   "include": ["src/**/*.ts"]
 }
diff --git a/packages/types/tsconfig.esm.json b/packages/types/tsconfig.esm.json
deleted file mode 100644
index 33a3842217d4..000000000000
--- a/packages/types/tsconfig.esm.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "extends": "../../tsconfig.esm.json",
-  "compilerOptions": {
-    "baseUrl": ".",
-    "outDir": "esm"
-  },
-  "include": ["src/**/*"]
-}
diff --git a/packages/types/tsconfig.esm5.json b/packages/types/tsconfig.esm5.json
new file mode 100644
index 000000000000..40191a1caf0d
--- /dev/null
+++ b/packages/types/tsconfig.esm5.json
@@ -0,0 +1,14 @@
+{
+  "extends": "../../tsconfig.esm5.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "outDir": "esm5",
+    "rootDir": "src",
+    "paths": {
+      "@sentry/*": [
+        "../*/esm5"
+      ]
+    }
+  },
+  "include": ["src/**/*"]
+}
diff --git a/packages/types/tsconfig.esmnext.json b/packages/types/tsconfig.esmnext.json
new file mode 100644
index 000000000000..2c135111d7b1
--- /dev/null
+++ b/packages/types/tsconfig.esmnext.json
@@ -0,0 +1,13 @@
+{
+  "extends": "../../tsconfig.esmnext.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "outDir": "esmnext",
+    "paths": {
+      "@sentry/*": [
+        "../*/esmnext"
+      ]
+    }
+  },
+  "include": ["src/**/*"]
+}
diff --git a/packages/types/tsconfig.json b/packages/types/tsconfig.json
index 5de1fb3c86cd..14ef6df6f8c0 100644
--- a/packages/types/tsconfig.json
+++ b/packages/types/tsconfig.json
@@ -1,9 +1,13 @@
 {
   "extends": "./tsconfig.build.json",
-  "include": ["src/**/*.ts"],
-  "exclude": ["dist"],
   "compilerOptions": {
-    "rootDir": ".",
-    "types": ["node"]
-  }
+    "baseUrl": ".",
+    "rootDir": "src",
+    "types": ["node"],
+    "paths": {
+      "@sentry/*": ["../*/src"]
+    }
+  },
+  "include": ["src/**/*.ts"],
+  "exclude": ["dist"]
 }
diff --git a/packages/typescript/tslint.json b/packages/typescript/tslint.json
index 5ab7ab7b378f..133f3aa0f697 100644
--- a/packages/typescript/tslint.json
+++ b/packages/typescript/tslint.json
@@ -79,5 +79,6 @@
       { "type": "member", "modifiers": "protected", "leadingUnderscore": "require" },
       { "type": "member", "modifiers": "private", "leadingUnderscore": "require" }
     ]
-  }
+  },
+  "jsRules": {}
 }
diff --git a/packages/utils/.gitignore b/packages/utils/.gitignore
deleted file mode 100644
index 1a514e34e2c2..000000000000
--- a/packages/utils/.gitignore
+++ /dev/null
@@ -1,3 +0,0 @@
-*.js.map
-*.d.ts
-*.js
diff --git a/packages/utils/package.json b/packages/utils/package.json
index 44efded72909..fe7fae27e1bd 100644
--- a/packages/utils/package.json
+++ b/packages/utils/package.json
@@ -9,9 +9,15 @@
   "engines": {
     "node": ">=6"
   },
-  "main": "dist/index.js",
-  "module": "esm/index.js",
-  "types": "dist/index.d.ts",
+  "main": "./dist/index.js",
+  "module": "./bundles/utils.fesm5.js",
+  "esnext": "./bundles/utils.fesmnext.js",
+  "esm5": "./esm5/index.js",
+  "esmnext": "./esmnext/index.js",
+  "fesm5": "./bundles/utils.fesm5.js",
+  "fesmnext": "./bundles/utils.fesmnext.js",
+  "jsnext:main": "./esmnext/index.js",
+  "typings": "./dist/index.d.ts",
   "publishConfig": {
     "access": "public"
   },
@@ -26,16 +32,23 @@
     "prettier": "^1.16.4",
     "prettier-check": "^2.0.0",
     "rimraf": "^2.6.3",
+    "rollup-plugin-typescript2": "^0.21.0",
     "tslint": "^5.14.0",
     "typescript": "^3.3.3333"
   },
   "scripts": {
-    "build": "run-p build:es5 build:esm",
-    "build:es5": "tsc -p tsconfig.build.json",
-    "build:esm": "tsc -p tsconfig.esm.json",
-    "build:watch": "run-p build:watch:es5 build:watch:esm",
-    "build:watch:es5": "tsc -p tsconfig.build.json -w --preserveWatchOutput",
-    "build:watch:esm": "tsc -p tsconfig.esm.json -w --preserveWatchOutput",
+    "build": "run-s build:split build:bundle",
+    "build:split": "run-p build:dist build:esm5 build:esmnext",
+    "build:bundle": "rollup --config",
+    "build:dist": "tsc -p tsconfig.build.json",
+    "build:esm5": "tsc -p tsconfig.esm5.json",
+    "build:esmnext": "tsc -p tsconfig.esmnext.json",
+    "build:watch": "run-s build:split build:watch:loop",
+    "build:watch:loop": "run-p build:watch:dist build:watch:esm5 build:watch:esmnext build:watch:bundle",
+    "build:watch:bundle": "rollup --config --watch",
+    "build:watch:dist": "tsc -wp tsconfig.build.json",
+    "build:watch:esm5": "tsc -wp tsconfig.esm5.json",
+    "build:watch:esmnext": "tsc -wp tsconfig.esmnext.json",
     "clean": "rimraf dist esm coverage *.js *.js.map *.d.ts",
     "link:yarn": "yarn link",
     "lint": "run-s lint:prettier lint:tslint",
diff --git a/packages/utils/rollup.config.js b/packages/utils/rollup.config.js
new file mode 100644
index 000000000000..0350ed2eba0c
--- /dev/null
+++ b/packages/utils/rollup.config.js
@@ -0,0 +1,5 @@
+import { generate_cfg } from '../../resources/rollup.base';
+
+export default [
+  ...generate_cfg('utils'),
+];
diff --git a/packages/utils/tsconfig.build.json b/packages/utils/tsconfig.build.json
index c0816d87b819..a6400ac174b3 100644
--- a/packages/utils/tsconfig.build.json
+++ b/packages/utils/tsconfig.build.json
@@ -3,7 +3,10 @@
   "compilerOptions": {
     "baseUrl": ".",
     "outDir": "dist",
-    "rootDir": "src"
+    "rootDir": "src",
+    "paths": {
+      "@sentry/*": ["../*/dist"]
+    }
   },
   "include": ["src/**/*.ts"]
 }
diff --git a/packages/utils/tsconfig.esm.json b/packages/utils/tsconfig.esm.json
deleted file mode 100644
index 33a3842217d4..000000000000
--- a/packages/utils/tsconfig.esm.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "extends": "../../tsconfig.esm.json",
-  "compilerOptions": {
-    "baseUrl": ".",
-    "outDir": "esm"
-  },
-  "include": ["src/**/*"]
-}
diff --git a/packages/utils/tsconfig.esm5.json b/packages/utils/tsconfig.esm5.json
new file mode 100644
index 000000000000..277872853219
--- /dev/null
+++ b/packages/utils/tsconfig.esm5.json
@@ -0,0 +1,12 @@
+{
+  "extends": "../../tsconfig.esm5.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "outDir": "esm5",
+    "rootDir": "src",
+    "paths": {
+      "@sentry/*": ["../*/esm5"]
+    }
+  },
+  "include": ["src/**/*"]
+}
diff --git a/packages/utils/tsconfig.esmnext.json b/packages/utils/tsconfig.esmnext.json
new file mode 100644
index 000000000000..748040a3b1ee
--- /dev/null
+++ b/packages/utils/tsconfig.esmnext.json
@@ -0,0 +1,12 @@
+{
+  "extends": "../../tsconfig.esmnext.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "outDir": "esmnext",
+    "rootDir": "src",
+    "paths": {
+      "@sentry/*": ["../*/esmnext"]
+    }
+  },
+  "include": ["src/**/*"]
+}
diff --git a/packages/utils/tsconfig.json b/packages/utils/tsconfig.json
index 55b38e135ae2..42eb3386d2ab 100644
--- a/packages/utils/tsconfig.json
+++ b/packages/utils/tsconfig.json
@@ -1,9 +1,13 @@
 {
-  "extends": "./tsconfig.build.json",
-  "include": ["src/**/*.ts", "test/**/*.ts"],
-  "exclude": ["dist"],
+  "extends": "../../tsconfig.json",
   "compilerOptions": {
+    "baseUrl": ".",
     "rootDir": ".",
-    "types": ["node", "jest"]
-  }
+    "types": ["node", "jest"],
+    "paths": {
+      "@sentry/*": ["../*/src"]
+    }
+  },
+  "include": ["src/**/*.ts", "test/**/*.ts"],
+  "exclude": ["dist"]
 }
diff --git a/resources/rollup.base.mjs b/resources/rollup.base.mjs
new file mode 100644
index 000000000000..cff6160f58ec
--- /dev/null
+++ b/resources/rollup.base.mjs
@@ -0,0 +1,74 @@
+import autoExternal from 'rollup-plugin-auto-external';
+import typescript from 'rollup-plugin-typescript2';
+import { resolve, join } from 'path';
+
+
+/**
+ * Generates a `path` value
+ *
+ * @param build
+ * @returns {{}}
+ */
+export function getPaths(build) {
+  return {
+    // __dirname points to directory of rollup.config.js
+    '@sentry/*': [join(resolve(__dirname), '../*', build)]
+  };
+}
+
+export function generate_cfg(module_name) {
+  // TODO: License?
+
+  const fesm5Config = {
+    input: 'src/index.ts',
+    output: {
+      format: 'es',
+      name: `@sentry/${module_name}`,
+      sourcemap: true,
+      file: `bundles/${module_name}.fesm5.js`,
+    },
+    context: 'window',
+    plugins: [
+      typescript({
+        tsconfig: 'tsconfig.esm5.json',
+        tsconfigOverride: {
+          compilerOptions: {
+            declaration: false,
+            declarationMap: false,
+            module: 'ES2015',
+            paths: getPaths("esm5"),
+          },
+        },
+        include: ['*.ts+(|x)', '**/*.ts+(|x)', '../**/*.ts+(|x)'],
+      }),
+      autoExternal(),
+    ],
+  };
+
+  const fesmnextConfig = {
+    input: 'src/index.ts',
+    output: {
+      format: 'es',
+      name: `@sentry/${module_name}`,
+      sourcemap: true,
+      file: `bundles/${module_name}.fesmnext.js`,
+    },
+    context: 'window',
+    plugins: [
+      typescript({
+        tsconfig: 'tsconfig.esmnext.json',
+        tsconfigOverride: {
+          compilerOptions: {
+            declaration: false,
+            declarationMap: false,
+            module: 'ES2015',
+            paths: getPaths("esmnext"),
+          },
+        },
+        include: ['*.ts+(|x)', '**/*.ts+(|x)', '../**/*.ts+(|x)'],
+      }),
+      autoExternal(),
+    ],
+  };
+  return [fesm5Config, fesmnextConfig];
+}
diff --git a/tsconfig.esm.json b/tsconfig.esm5.json
similarity index 100%
rename from tsconfig.esm.json
rename to tsconfig.esm5.json
diff --git a/tsconfig.esmnext.json b/tsconfig.esmnext.json
new file mode 100644
index 000000000000..354f86db72c0
--- /dev/null
+++ b/tsconfig.esmnext.json
@@ -0,0 +1,7 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "target": "esnext",
+    "module": "es6"
+  }
+}
diff --git a/tsconfig.json b/tsconfig.json
index 154bca11059f..efe259a715a4 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,12 +1,8 @@
 {
   "extends": "./packages/typescript/tsconfig.json",
   "compilerOptions": {
-    "baseUrl": "packages",
     "types": ["node"],
-    "paths": {
-      "@sentry/*": ["*/src"],
-      "raven-js": ["raven-js/src/singleton.js"],
-      "raven-node": ["raven-node/lib/client.js"]
-    }
+    "moduleResolution": "node",
+    "declaration": true
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 1f13b7446fac..0cb9071b2295 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2759,6 +2759,13 @@ builtins@^1.0.3:
   resolved "https://registry.yarnpkg.com/builtins/-/builtins-1.0.3.tgz#cb94faeb61c8696451db36534e1422f94f0aee88"
   integrity sha1-y5T662HIaWRR2zZTThQi+U8K7og=
 
+builtins@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/builtins/-/builtins-2.0.0.tgz#018999641e11252188652dbb2db01ad386fcdc46"
+  integrity sha512-8srrxpDx3a950BHYcbse+xMjupHHECvQYnShkoPz2ZLhTBrk/HQO6nWMh4o4ui8YYp2ourGVYXlGqFm+UYQwmA==
+  dependencies:
+    semver "^5.4.1"
+
 byline@^5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/byline/-/byline-5.0.0.tgz#741c5216468eadc457b03410118ad77de8c1ddb1"
@@ -9167,6 +9174,16 @@ ripemd160@^2.0.0, ripemd160@^2.0.1:
     hash-base "^3.0.0"
     inherits "^2.0.1"
 
+rollup-plugin-auto-external@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/rollup-plugin-auto-external/-/rollup-plugin-auto-external-2.0.0.tgz#98fd137d66c1cbe0f4e245b31560a72dbde896aa"
+  integrity sha512-HQM3ZkZYfSam1uoZtAB9sK26EiAsfs1phrkf91c/YX+S07wugyRXSigBxrIwiLr5EPPilKYmoMxsrnlGBsXnuQ==
+  dependencies:
+    builtins "^2.0.0"
+    read-pkg "^3.0.0"
+    safe-resolve "^1.0.0"
+    semver "^5.5.0"
+
 rollup-plugin-commonjs@^9.2.1:
   version "9.2.1"
   resolved "https://registry.yarnpkg.com/rollup-plugin-commonjs/-/rollup-plugin-commonjs-9.2.1.tgz#bb151ca8fa23600c7a03e25f9f0a45b1ee922dac"
@@ -9207,10 +9224,10 @@ rollup-plugin-terser@^4.0.4:
     serialize-javascript "^1.6.1"
     terser "^3.14.1"
 
-rollup-plugin-typescript2@^0.20.1:
-  version "0.20.1"
-  resolved "https://registry.yarnpkg.com/rollup-plugin-typescript2/-/rollup-plugin-typescript2-0.20.1.tgz#fb1d411975cd875d24882ea66f5f4fd11d2f2240"
-  integrity sha512-uxA5JQNOfmJ9rsO0yJKTObb1t4nNYUexCg9zxhEKF+NzZwljYWdfgrA06UzA24cOk8fQjGEe7Q5+Vge2vFlnnw==
+rollup-plugin-typescript2@^0.21.0:
+  version "0.21.0"
+  resolved "https://registry.yarnpkg.com/rollup-plugin-typescript2/-/rollup-plugin-typescript2-0.21.0.tgz#cc61ed756ac6e68cb3c03f7ee78001346243ed54"
+  integrity sha512-fbUAc2bvWxRrg1GGMYCFVf6aSxq3zvWn0sY2ubzFW9shJNT95ztFbM6GHO4/2rDSCjier7IswQnbr1ySqoLNPw==
   dependencies:
     fs-extra "7.0.1"
     resolve "1.10.0"
@@ -9271,6 +9288,11 @@ safe-regex@^1.1.0:
   dependencies:
     ret "~0.1.10"
 
+safe-resolve@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/safe-resolve/-/safe-resolve-1.0.0.tgz#fe34f8d29d7a3becfd249d0aa8a799b5c3cf6559"
+  integrity sha1-/jT40p16O+z9JJ0KqKeZtcPPZVk=
+
 "safer-buffer@>= 2.1.2 < 3", safer-buffer@^2.0.2, safer-buffer@^2.1.0, safer-buffer@~2.1.0:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
@@ -10492,6 +10514,11 @@ typescript@^3.3.3333:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.3.3333.tgz#171b2c5af66c59e9431199117a3bcadc66fdcfd6"
   integrity sha512-JjSKsAfuHBE/fB2oZ8NxtRTk5iGcg6hkYXMnZ3Wc+b2RSqejEqTaem11mHASMnFilHrax3sLK0GDzcJrekZYLw==
 
+typescript@^3.4.5:
+  version "3.4.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.4.5.tgz#2d2618d10bb566572b8d7aad5180d84257d70a99"
+  integrity sha512-YycBxUb49UUhdNMU5aJ7z5Ej2XGmaIBL0x34vZ82fn3hGvD+bgrMrVDpatgz2f7YxUMJxMkbWxJZeAvDxVe7Vw==
+
 uglify-js@^2.6:
   version "2.8.29"
   resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-2.8.29.tgz#29c5733148057bb4e1f75df35b7a9cb72e6a59dd"