12 lines
302 B
TypeScript
12 lines
302 B
TypeScript
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type Types = 'string' | 'number' | 'boolean' | 'object'
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type TypeMap = {
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string: string
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number: number
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boolean: boolean
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object: object
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}
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export function isType<T extends Types>(type: T): (v: unknown) => v is TypeMap[T] {
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return (v: unknown): v is TypeMap[T] => typeof v === type
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}
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