How to check for dayjs type with zod? #1259
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I'm using Day.js extensively in my application. The way to check for dayjs type is to check instanceof dayjs (the function): import dayjs from "dayjs";
const date = dayjs();
console.log(date instanceof dayjs) // trueThe param type of const dateType = z.instanceof(dayjs as any);
How can I infer dayjs properly? |
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Replies: 2 comments 4 replies
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The solution didn't worked for me causing an error. But this works: import dayjs, { type Dayjs } from 'dayjs';
...
z.instanceof(dayjs as unknown as typeof Dayjs) |
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thank you, I needed this as well, though I am unsure why :) |
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This answer is very helpful to me. However, I don't know why this coding works properly. Is there anyone who can explain? |
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Thank You |
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If anyone want to haver a proper version with no type-cast: const zodDay = z.custom<Dayjs>((val) => val instanceof dayjs, 'Invalid date'); |
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Or you can use |
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The solution didn't worked for me causing an error.
But this works: