electron/docs/breaking-changes-ns.md

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# Breaking changes (NetworkService) (Draft)
This document describes changes to Electron APIs after migrating network code
to NetworkService API.
We don't currently have an estimate of when we will enable `NetworkService` by
default in Electron, but as Chromium is already removing non-`NetworkService`
code, we might switch before Electron 10.
The content of this document should be moved to `breaking-changes.md` once we have
determined when to enable `NetworkService` in Electron.
## Planned Breaking API Changes
### `protocol.unregisterProtocol`
### `protocol.uninterceptProtocol`
The APIs are now synchronous and the optional callback is no longer needed.
```javascript
// Deprecated
protocol.unregisterProtocol(scheme, () => { /* ... */ })
// Replace with
protocol.unregisterProtocol(scheme)
```
### `protocol.registerFileProtocol`
### `protocol.registerBufferProtocol`
### `protocol.registerStringProtocol`
### `protocol.registerHttpProtocol`
### `protocol.registerStreamProtocol`
### `protocol.interceptFileProtocol`
### `protocol.interceptStringProtocol`
### `protocol.interceptBufferProtocol`
### `protocol.interceptHttpProtocol`
### `protocol.interceptStreamProtocol`
The APIs are now synchronous and the optional callback is no longer needed.
```javascript
// Deprecated
protocol.registerFileProtocol(scheme, handler, () => { /* ... */ })
// Replace with
protocol.registerFileProtocol(scheme, handler)
```
The registered or intercepted protocol does not have effect on current page
until navigation happens.
### `protocol.isProtocolHandled`
This API is deprecated and users should use `protocol.isProtocolRegistered`
and `protocol.isProtocolIntercepted` instead.
```javascript
// Deprecated
protocol.isProtocolHandled(scheme).then(() => { /* ... */ })
// Replace with
const isRegistered = protocol.isProtocolRegistered(scheme)
const isIntercepted = protocol.isProtocolIntercepted(scheme)
```