46 lines
1.3 KiB
TypeScript
46 lines
1.3 KiB
TypeScript
import type { z } from "zod";
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type ErrorMessage = string;
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type Errors<Schema> = Partial<Record<keyof Schema, ErrorMessage>>;
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type FormError<Schema extends z.Schema<unknown>> = Partial<Record<keyof Schema["_type"] | "general", ErrorMessage>>;
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type ValidationResult<Data, Schema> = { data: Data; errors: undefined } | { data: undefined; errors: Errors<Schema> };
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export function validate<Data, Schema = z.Schema<Data>["_type"]>(
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schema: z.Schema<Data>,
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value: unknown,
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): ValidationResult<Data, Schema> {
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const result = schema.safeParse(value);
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if (result.success) {
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return {
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data: result.data,
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errors: undefined,
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};
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}
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const errors: Errors<Schema> = {};
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result.error.issues.forEach((error) => {
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const path = error.path[0] as keyof Schema;
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if (!errors[path]) {
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errors[path] = error.message;
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}
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});
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return {
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data: undefined,
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errors,
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};
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}
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type FormFailureData<Validations extends Record<string, z.Schema>, Action extends keyof Validations> = {
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errors: FormError<Validations[Action]>;
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submitted?: never;
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};
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type FormSuccessData = {
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errors?: never;
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submitted: true;
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};
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export type FormActionData<Validations extends Record<string, z.Schema>, Action extends keyof Validations> = Record<
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Action,
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FormSuccessData | FormFailureData<Validations, Action>
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>;
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