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feat: remove deprecated base::Value-based serialization (#21560)

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* feat: remove deprecated base::Value-based serialization

* add note to breaking-changes
This commit is contained in:
Jeremy Apthorp 2019-12-17 22:24:50 -08:00 • committed by Cheng Zhao
commit 1cac62f0a2
5 changed files with 40 additions and 120 deletions
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16
docs/api/breaking-changes.md
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@ -28,6 +28,22 @@ Electron 8.x, and has been removed in Electron 9.x. The layout zoom level limits
are now fixed at a minimum of 0.25 and a maximum of 5.0, as defined
[here](https://chromium.googlesource.com/chromium/src/+/938b37a6d2886bf8335fc7db792f1eb46c65b2ae/third_party/blink/common/page/page_zoom.cc#11).
### Sending non-JS objects over IPC now throws an exception
In Electron 8.0, IPC was changed to use the Structured Clone Algorithm,
bringing significant performance improvements. To help ease the transition, the
old IPC serialization algorithm was kept and used for some objects that aren't
serializable with Structured Clone. In particular, DOM objects (e.g. `Element`,
`Location` and `DOMMatrix`), Node.js objects backed by C++ classes (e.g.
`process.env`, some members of `Stream`), and Electron objects backed by C++
classes (e.g. `WebContents`, `BrowserWindow` and `WebFrame`) are not
serializable with Structured Clone. Whenever the old algorithm was invoked, a
deprecation warning was printed.
In Electron 9.0, the old serialization algorithm has been removed, and sending
such non-serializable objects will now throw an "object could not be cloned"
error.
## Planned Breaking API Changes (8.0)
### Values sent over IPC are now serialized with Structured Clone Algorithm