This major bump brings a lot of internal improvements. Also we extracted some integrations out of their packages and put

them in their own package called `@sentry/integrations`. For a detailed guide how to upgrade from `4.x` to `5.x`

consider our [migration guide](https://github.com/getsentry/sentry-javascript/blob/master/MIGRATION.md).

**Migration from v4**

If you were using the SDK without any special abilities, basically, the way we describe it in the docs, you should be

fine by just updating it. This is a **breaking** release since we removed some methods from the public API and removed

some classes from the default export.

- **breaking** [node] fix: Events created from exception shouldn't have top-level message attribute

- [utils] ref: Update wrap method to hide internal sentry flags

- [utils] fix: Make internal Sentry flags non-enumerable in fill utils

- [utils] ref: Move `SentryError` + `PromiseBuffer` to utils

- **breaking** [core] ref: Use `SyncPromise` internally, this reduces memory pressure by a lot.

- ref: Move internal `ExtendedError` to a types package

- **breaking** [browser] ref: Removed `BrowserBackend` from default export.

- **breaking** [node] ref: Removed `BrowserBackend` from default export.

- **breaking** [core] feat: Disable client once flushed using `close` method

- **breaking** [core] ref: Pass `Event` to `sendEvent` instead of already stringified data

- [utils] feat: Introduce `isSyntheticEvent` util

- **breaking** [utils] ref: remove `isArray` util in favor of `Array.isArray`

- **breaking** [utils] ref: Remove `isNaN` util in favor of `Number.isNaN`

- **breaking** [utils] ref: Remove `isFunction` util in favor of `typeof === 'function'`

- **breaking** [utils] ref: Remove `isUndefined` util in favor of `=== void 0`

- **breaking** [utils] ref: Remove `assign` util in favor of `Object.assign`

- **breaking** [utils] ref: Remove `includes` util in favor of native `includes`

- **breaking** [utils] ref: Rename `serializeKeysToEventMessage` to `keysToEventMessage`

- **breaking** [utils] ref: Rename `limitObjectDepthToSize` to `normalizeToSize` and rewrite its internals

- **breaking** [utils] ref: Rename `safeNormalize` to `normalize` and rewrite its internals

- **breaking** [utils] ref: Remove `serialize`, `deserialize`, `clone` and `serializeObject` functions

- **breaking** [utils] ref: Rewrite normalization functions by removing most of them and leaving just `normalize` and

`normalizeToSize`

- **breaking** [core] ref: Extract all pluggable integrations into a separate `@sentry/integrations` package

- **breaking** [core] ref: Move `extraErrorData` integration to `@sentry/integrations` package

- [core] feat: Add `maxValueLength` option to adjust max string length for values, default is 250.

- [hub] feat: Introduce `setExtras`, `setTags`, `clearBreadcrumbs`.

- **breaking** [all] feat: Move `Mechanism` to `Exception`

- [browser/node] feat: Add `synthetic` to `Mechanism` in exception.

- [browser/node] fix: Use `addExceptionTypeValue` in helpers

- [browser] ref: Remove unused TraceKit code

- **breaking** [all] build: Expose `module` in `package.json` as entry point for esm builds.

- **breaking** [all] build: Use `es6` target instead of esnext for ESM builds

- [all] feat: Prefix all private methods with `_`

- [all] build: Use terser instead of uglify

- [opentracing] feat: Introduce `@sentry/opentracing` providing functions to attach opentracing data to Sentry Events

- **breaking** [core] ref: `Dedupe` Integration is now optional, it is no longer enabled by default.

- **breaking** [core] ref: Removed default client fingerprinting for messages

- [node] ref: Remove stack-trace dependencies

- **breaking** [core] ref: Transport function `captureEvent` was renamed to `sendEvent`

- [node] fix: Check if buffer isReady before sending/creating Promise for request.

- [browser] fix: Remove beacon transport.

- [browser] fix: Don't mangle names starting with two `__`

- [utils] fix: Ensure only one logger instance

- [node] feat: Add esm build

- [integrations] feat: Fix build and prepare upload to cdn

- [integrations] fix: Bug in vue integration with `attachProps`

- **breaking** [core] ref: Remove SDK information integration

- **breaking** [core] ref: Remove `install` function on integration interface

- **breaking** [core] ref: Transport function `captureEvent` was renamed to `sendEvent`