svelte-hook-form/src/rule.ts

A better version of form validation.

import type { ValidationFunction } from "./types";

const RULES = new Map<string, ValidationFunction>();

export function defineRule(
  ruleName: string | ValidationFunction,
  cb?: ValidationFunction
) {
  if (typeof ruleName != "string") {
    cb = ruleName;
    ruleName = cb.name;
  }
  if (!cb) console.error("[svelte-hook-form] invalid rule function");
  RULES.set(ruleName, cb!);
}

export function resolveRule(ruleName: string): ValidationFunction {
  const cb = RULES.get(ruleName);
  if (!cb) console.error(`[svelte-hook-form] invalid rule name ${ruleName}`);
  return cb!;
}