Theo's Typesafe Cult•2y ago

Is there a way to improve the way I do type definition of the argument here with the zod object?

const exampleQuery = async (
    input: { text?: string | null | undefined } | null | undefined
) => {
    return {
        greeting: `Hello ${input?.text ?? "world"}`,
    };
};

export const exampleRouter = router({
    hello: publicProcedure
        .input(z.object({ text: z.string().nullish() }).nullish())
        .query(({ input }) => {
            return exampleQuery(input);
        }),
});

const exampleQuery = async (
    input: { text?: string | null | undefined } | null | undefined
) => {
    return {
        greeting: `Hello ${input?.text ?? "world"}`,
    };
};

export const exampleRouter = router({
    hello: publicProcedure
        .input(z.object({ text: z.string().nullish() }).nullish())
        .query(({ input }) => {
            return exampleQuery(input);
        }),
});

5 Replies

mrnicericee•2y ago

You can move the input Zod schema outside, then infer the type from it

amanuel•2y ago

I haven't worked with zod that much, can you show a simple example or just link a reference? Anything is helpful, thank you so much

mrnicericee•2y ago

One sec, not on my computer lol @amanuel could do this

import { z } from "zod";
import { publicProcedure } from "../../trpc";

const inputSchema = z.object({
  name: z.string(),
});

type Input = z.infer<typeof inputSchema>;

const greetings = (input: Input) => {
  return {
    greeting: input.name,
  };
};

export const example = publicProcedure
  .input(inputSchema)
  .query(({ input }) => {
    return greetings(input);
  });

import { z } from "zod";
import { publicProcedure } from "../../trpc";

const inputSchema = z.object({
  name: z.string(),
});

type Input = z.infer<typeof inputSchema>;

const greetings = (input: Input) => {
  return {
    greeting: input.name,
  };
};

export const example = publicProcedure
  .input(inputSchema)
  .query(({ input }) => {
    return greetings(input);
  });

amanuel•2y ago

Yes, this is perfec Thank you so much for the example

mrnicericee•2y ago

yeah no worries SippyDuck

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Is there a way to improve the way I do type definition of the argument here with the zod object?