40 lines
1.3 KiB
TypeScript
40 lines
1.3 KiB
TypeScript
type RecordValue = Record<string, unknown>
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const isRecord = (value: unknown): value is RecordValue => {
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return typeof value === "object" && value !== null
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}
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export const isDisposable = (value: unknown): value is { dispose: () => void } => {
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return isRecord(value) && typeof value.dispose === "function"
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}
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export const disposeIfDisposable = (value: unknown) => {
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if (!isDisposable(value)) return
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value.dispose()
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}
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export const hasSetOption = (value: unknown): value is { setOption: (key: string, next: unknown) => void } => {
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return isRecord(value) && typeof value.setOption === "function"
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}
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export const setOptionIfSupported = (value: unknown, key: string, next: unknown) => {
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if (!hasSetOption(value)) return
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value.setOption(key, next)
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}
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export const getHoveredLinkText = (value: unknown) => {
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if (!isRecord(value)) return
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const link = value.currentHoveredLink
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if (!isRecord(link)) return
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if (typeof link.text !== "string") return
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return link.text
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}
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export const getSpeechRecognitionCtor = <T>(value: unknown): (new () => T) | undefined => {
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if (!isRecord(value)) return
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const ctor =
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typeof value.webkitSpeechRecognition === "function" ? value.webkitSpeechRecognition : value.SpeechRecognition
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if (typeof ctor !== "function") return
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return ctor as new () => T
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}
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