TypeScript 3.1
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小牛编辑
138浏览
2023-12-01
一些浏览器厂商特定的类型从lib.d.ts
中被移除
TypeScript内置的.d.ts
库(lib.d.ts
等)现在会部分地从DOM规范的Web IDL文件中生成。 因此有一些浏览器厂商特定的类型被移除了。
点击这里查看被移除类型的完整列表:
CanvasRenderingContext2D.mozImageSmoothingEnabled
CanvasRenderingContext2D.msFillRule
CanvasRenderingContext2D.oImageSmoothingEnabled
CanvasRenderingContext2D.webkitImageSmoothingEnabled
Document.caretRangeFromPoint
Document.createExpression
Document.createNSResolver
Document.execCommandShowHelp
Document.exitFullscreen
Document.exitPointerLock
Document.focus
Document.fullscreenElement
Document.fullscreenEnabled
Document.getSelection
Document.msCapsLockWarningOff
Document.msCSSOMElementFloatMetrics
Document.msElementsFromRect
Document.msElementsFromPoint
Document.onvisibilitychange
Document.onwebkitfullscreenchange
Document.onwebkitfullscreenerror
Document.pointerLockElement
Document.queryCommandIndeterm
Document.URLUnencoded
Document.webkitCurrentFullScreenElement
Document.webkitFullscreenElement
Document.webkitFullscreenEnabled
Document.webkitIsFullScreen
Document.xmlEncoding
Document.xmlStandalone
Document.xmlVersion
DocumentType.entities
DocumentType.internalSubset
DocumentType.notations
DOML2DeprecatedSizeProperty
Element.msContentZoomFactor
Element.msGetUntransformedBounds
Element.msMatchesSelector
Element.msRegionOverflow
Element.msReleasePointerCapture
Element.msSetPointerCapture
Element.msZoomTo
Element.onwebkitfullscreenchange
Element.onwebkitfullscreenerror
Element.webkitRequestFullScreen
Element.webkitRequestFullscreen
ElementCSSInlineStyle
ExtendableEventInit
ExtendableMessageEventInit
FetchEventInit
GenerateAssertionCallback
HTMLAnchorElement.Methods
HTMLAnchorElement.mimeType
HTMLAnchorElement.nameProp
HTMLAnchorElement.protocolLong
HTMLAnchorElement.urn
HTMLAreasCollection
HTMLHeadElement.profile
HTMLImageElement.msGetAsCastingSource
HTMLImageElement.msGetAsCastingSource
HTMLImageElement.msKeySystem
HTMLImageElement.msPlayToDisabled
HTMLImageElement.msPlayToDisabled
HTMLImageElement.msPlayToPreferredSourceUri
HTMLImageElement.msPlayToPreferredSourceUri
HTMLImageElement.msPlayToPrimary
HTMLImageElement.msPlayToPrimary
HTMLImageElement.msPlayToSource
HTMLImageElement.msPlayToSource
HTMLImageElement.x
HTMLImageElement.y
HTMLInputElement.webkitdirectory
HTMLLinkElement.import
HTMLMetaElement.charset
HTMLMetaElement.url
HTMLSourceElement.msKeySystem
HTMLStyleElement.disabled
HTMLSummaryElement
MediaQueryListListener
MSAccountInfo
MSAudioLocalClientEvent
MSAudioLocalClientEvent
MSAudioRecvPayload
MSAudioRecvSignal
MSAudioSendPayload
MSAudioSendSignal
MSConnectivity
MSCredentialFilter
MSCredentialParameters
MSCredentials
MSCredentialSpec
MSDCCEvent
MSDCCEventInit
MSDelay
MSDescription
MSDSHEvent
MSDSHEventInit
MSFIDOCredentialParameters
MSIceAddrType
MSIceType
MSIceWarningFlags
MSInboundPayload
MSIPAddressInfo
MSJitter
MSLocalClientEvent
MSLocalClientEventBase
MSNetwork
MSNetworkConnectivityInfo
MSNetworkInterfaceType
MSOutboundNetwork
MSOutboundPayload
MSPacketLoss
MSPayloadBase
MSPortRange
MSRelayAddress
MSSignatureParameters
MSStatsType
MSStreamReader
MSTransportDiagnosticsStats
MSUtilization
MSVideoPayload
MSVideoRecvPayload
MSVideoResolutionDistribution
MSVideoSendPayload
NotificationEventInit
PushEventInit
PushSubscriptionChangeInit
RTCIdentityAssertionResult
RTCIdentityProvider
RTCIdentityProviderDetails
RTCIdentityValidationResult
Screen.deviceXDPI
Screen.logicalXDPI
SVGElement.xmlbase
SVGGraphicsElement.farthestViewportElement
SVGGraphicsElement.getTransformToElement
SVGGraphicsElement.nearestViewportElement
SVGStylable
SVGTests.hasExtension
SVGTests.requiredFeatures
SyncEventInit
ValidateAssertionCallback
WebKitDirectoryEntry
WebKitDirectoryReader
WebKitEntriesCallback
WebKitEntry
WebKitErrorCallback
WebKitFileCallback
WebKitFileEntry
WebKitFileSystem
Window.clearImmediate
Window.msSetImmediate
Window.setImmediate
推荐:
如果你的运行时能够保证这些名称是可用的(比如一个仅针对IE的应用),那么可以在本地添加那些声明,例如:
对于Element.msMatchesSelector
,在本地的dom.ie.d.ts
文件里添加如下代码:
interface Element {
msMatchesSelector(selectors: string): boolean;
}
相似地,若要添加clearImmediate
和setImmediate
,你可以在本地的dom.ie.d.ts
里添加Window
声明:
interface Window {
clearImmediate(handle: number): void;
setImmediate(handler: (...args: any[]) => void): number;
setImmediate(handler: any, ...args: any[]): number;
}
细化的函数现在会使用{}
,Object
和未约束的泛型参数的交叉类型
下面的代码如今会提示x
不能被调用:
function foo<T>(x: T | (() => string)) {
if (typeof x === "function") {
x();
// ~~~
// Cannot invoke an expression whose type lacks a call signature. Type '(() => string) | (T & Function)' has no compatible call signatures.
}
}
这是因为,不同于以前的T
会被细化掉,如今T
会被扩展成T & Function
。 然而,因为这个类型没有声明调用签名,类型系统无法找到通用的调用签名可以适用于T & Function
和() => string
。
因此,考虑使用一个更确切的类型,而不是{}
或Object
,并且考虑给T
添加额外的约束条件。