electron/docs/api/breaking-changes.md
Nitish Sakhawalkar bfa07ec4be feat: Add new powerMonitor synchronous API (#17144)
`powerMonitor.querySystemIdleState` and `powerMonitor.querySystemIdleTime` had async backing APIs in chromium (https://chromium-review.googlesource.com/c/chromium/src/+/1379183). However, that has changed in ch73. So, this PR deprecates the old async APIs and adds new sync APIs.
2019-02-27 15:54:01 -05:00

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# API Contract
Breaking changes will be documented here, and deprecation warnings added to JS code where possible, at least [one major version](../tutorial/electron-versioning.md#semver) before the change is made.
# `FIXME` comments
The `FIXME` string is used in code comments to denote things that should be fixed for future releases. See https://github.com/electron/electron/search?q=fixme
# Planned Breaking API Changes (6.0)
## `win.setMenu(null)`
```js
// Deprecated
win.setMenu(null)
// Replace with
win.removeMenu()
```
## `contentTracing.getTraceBufferUsage()`
```js
// Deprecated
contentTracing.getTraceBufferUsage((percentage, value) => {
// do something
})
// Replace with
contentTracing.getTraceBufferUsage().then(infoObject => {
// infoObject has percentage and value fields
})
```
## `electron.screen` in renderer process
```js
// Deprecated
require('electron').screen
// Replace with
require('electron').remote.screen
```
## `require` in sandboxed renderers
```js
// Deprecated
require('child_process')
// Replace with
require('electron').remote.require('child_process')
// Deprecated
require('fs')
// Replace with
require('electron').remote.require('fs')
// Deprecated
require('os')
// Replace with
require('electron').remote.require('os')
// Deprecated
require('path')
// Replace with
require('electron').remote.require('path')
```
## `powerMonitor.querySystemIdleState`
```js
// Deprecated
powerMonitor.querySystemIdleState(threshold, callback)
// Replace with synchronous API
const idleState = getSystemIdleState(threshold)
```
## `powerMonitor.querySystemIdleTime`
```js
// Deprecated
powerMonitor.querySystemIdleTime(callback)
// Replace with synchronous API
const idleTime = getSystemIdleTime()
```
# Planned Breaking API Changes (5.0)
## `new BrowserWindow({ webPreferences })`
The following `webPreferences` option default values are deprecated in favor of the new defaults listed below.
| Property | Deprecated Default | New Default |
|----------|--------------------|-------------|
| `contextIsolation` | `false` | `true` |
| `nodeIntegration` | `true` | `false` |
| `webviewTag` | `nodeIntegration` if set else `true` | `false` |
## `nativeWindowOpen`
Child windows opened with the `nativeWindowOpen` option will always have Node.js integration disabled.
## Privileged Schemes Registration
Renderer process APIs `webFrame.setRegisterURLSchemeAsPrivileged` and `webFrame.registerURLSchemeAsBypassingCSP` as well as browser process API `protocol.registerStandardSchemes` have been removed.
A new API, `protocol.registerSchemesAsPrivileged` has been added and should be used for registering custom schemes with the required privileges. Custom schemes are required to be registered before app ready.
## webFrame Isolated World APIs
```js
// Deprecated
webFrame.setIsolatedWorldContentSecurityPolicy(worldId, csp)
webFrame.setIsolatedWorldHumanReadableName(worldId, name)
webFrame.setIsolatedWorldSecurityOrigin(worldId, securityOrigin)
// Replace with
webFrame.setIsolatedWorldInfo(
worldId,
{
securityOrigin: 'some_origin',
name: 'human_readable_name',
csp: 'content_security_policy'
})
```
# Planned Breaking API Changes (4.0)
The following list includes the breaking API changes made in Electron 4.0.
## `app.makeSingleInstance`
```js
// Deprecated
app.makeSingleInstance((argv, cwd) => {
/* ... */
})
// Replace with
app.requestSingleInstanceLock()
app.on('second-instance', (event, argv, cwd) => {
/* ... */
})
```
## `app.releaseSingleInstance`
```js
// Deprecated
app.releaseSingleInstance()
// Replace with
app.releaseSingleInstanceLock()
```
## `app.getGPUInfo`
```js
app.getGPUInfo('complete')
// Now behaves the same with `basic` on macOS
app.getGPUInfo('basic')
```
## `win_delay_load_hook`
When building native modules for windows, the `win_delay_load_hook` variable in
the module's `binding.gyp` must be true (which is the default). If this hook is
not present, then the native module will fail to load on Windows, with an error
message like `Cannot find module`. See the [native module
guide](/docs/tutorial/using-native-node-modules.md) for more.
# Breaking API Changes (3.0)
The following list includes the breaking API changes in Electron 3.0.
## `app`
```js
// Deprecated
app.getAppMemoryInfo()
// Replace with
app.getAppMetrics()
// Deprecated
const metrics = app.getAppMetrics()
const { memory } = metrics[0] // Deprecated property
```
## `BrowserWindow`
```js
// Deprecated
let optionsA = { webPreferences: { blinkFeatures: '' } }
let windowA = new BrowserWindow(optionsA)
// Replace with
let optionsB = { webPreferences: { enableBlinkFeatures: '' } }
let windowB = new BrowserWindow(optionsB)
// Deprecated
window.on('app-command', (e, cmd) => {
if (cmd === 'media-play_pause') {
// do something
}
})
// Replace with
window.on('app-command', (e, cmd) => {
if (cmd === 'media-play-pause') {
// do something
}
})
```
## `clipboard`
```js
// Deprecated
clipboard.readRtf()
// Replace with
clipboard.readRTF()
// Deprecated
clipboard.writeRtf()
// Replace with
clipboard.writeRTF()
// Deprecated
clipboard.readHtml()
// Replace with
clipboard.readHTML()
// Deprecated
clipboard.writeHtml()
// Replace with
clipboard.writeHTML()
```
## `crashReporter`
```js
// Deprecated
crashReporter.start({
companyName: 'Crashly',
submitURL: 'https://crash.server.com',
autoSubmit: true
})
// Replace with
crashReporter.start({
companyName: 'Crashly',
submitURL: 'https://crash.server.com',
uploadToServer: true
})
```
## `nativeImage`
```js
// Deprecated
nativeImage.createFromBuffer(buffer, 1.0)
// Replace with
nativeImage.createFromBuffer(buffer, {
scaleFactor: 1.0
})
```
## `process`
```js
// Deprecated
const info = process.getProcessMemoryInfo()
```
## `screen`
```js
// Deprecated
screen.getMenuBarHeight()
// Replace with
screen.getPrimaryDisplay().workArea
```
## `session`
```js
// Deprecated
ses.setCertificateVerifyProc((hostname, certificate, callback) => {
callback(true)
})
// Replace with
ses.setCertificateVerifyProc((request, callback) => {
callback(0)
})
```
## `Tray`
```js
// Deprecated
tray.setHighlightMode(true)
// Replace with
tray.setHighlightMode('on')
// Deprecated
tray.setHighlightMode(false)
// Replace with
tray.setHighlightMode('off')
```
## `webContents`
```js
// Deprecated
webContents.openDevTools({ detach: true })
// Replace with
webContents.openDevTools({ mode: 'detach' })
// Removed
webContents.setSize(options)
// There is no replacement for this API
```
## `webFrame`
```js
// Deprecated
webFrame.registerURLSchemeAsSecure('app')
// Replace with
protocol.registerStandardSchemes(['app'], { secure: true })
// Deprecated
webFrame.registerURLSchemeAsPrivileged('app', { secure: true })
// Replace with
protocol.registerStandardSchemes(['app'], { secure: true })
```
## `<webview>`
```js
// Removed
webview.setAttribute('disableguestresize', '')
// There is no replacement for this API
// Removed
webview.setAttribute('guestinstance', instanceId)
// There is no replacement for this API
// Keyboard listeners no longer work on webview tag
webview.onkeydown = () => { /* handler */ }
webview.onkeyup = () => { /* handler */ }
```
## Node Headers URL
This is the URL specified as `disturl` in a `.npmrc` file or as the `--dist-url`
command line flag when building native Node modules.
Deprecated: https://atom.io/download/atom-shell
Replace with: https://atom.io/download/electron
# Breaking API Changes (2.0)
The following list includes the breaking API changes made in Electron 2.0.
## `BrowserWindow`
```js
// Deprecated
let optionsA = { titleBarStyle: 'hidden-inset' }
let windowA = new BrowserWindow(optionsA)
// Replace with
let optionsB = { titleBarStyle: 'hiddenInset' }
let windowB = new BrowserWindow(optionsB)
```
## `menu`
```js
// Removed
menu.popup(browserWindow, 100, 200, 2)
// Replaced with
menu.popup(browserWindow, { x: 100, y: 200, positioningItem: 2 })
```
## `nativeImage`
```js
// Removed
nativeImage.toPng()
// Replaced with
nativeImage.toPNG()
// Removed
nativeImage.toJpeg()
// Replaced with
nativeImage.toJPEG()
```
## `process`
* `process.versions.electron` and `process.version.chrome` will be made
read-only properties for consistency with the other `process.versions`
properties set by Node.
## `webContents`
```js
// Removed
webContents.setZoomLevelLimits(1, 2)
// Replaced with
webContents.setVisualZoomLevelLimits(1, 2)
```
## `webFrame`
```js
// Removed
webFrame.setZoomLevelLimits(1, 2)
// Replaced with
webFrame.setVisualZoomLevelLimits(1, 2)
```
## `<webview>`
```js
// Removed
webview.setZoomLevelLimits(1, 2)
// Replaced with
webview.setVisualZoomLevelLimits(1, 2)
```
## Duplicate ARM Assets
Each Electron release includes two identical ARM builds with slightly different
filenames, like `electron-v1.7.3-linux-arm.zip` and
`electron-v1.7.3-linux-armv7l.zip`. The asset with the `v7l` prefix was added
to clarify to users which ARM version it supports, and to disambiguate it from
future armv6l and arm64 assets that may be produced.
The file _without the prefix_ is still being published to avoid breaking any
setups that may be consuming it. Starting at 2.0, the un-prefixed file will
no longer be published.
For details, see
[6986](https://github.com/electron/electron/pull/6986)
and
[7189](https://github.com/electron/electron/pull/7189).