@mub22/validity/dist/validate.js

Lightweight JavaScript validation library inspired by Laravel's rule syntax. Validate fields and forms easily with built-in rules and error messages.

import { rules } from "./rules";
import { rulesWithData } from "./rulesWithData";
import { locales } from "./locales";
const defaultLocale = locales.en;
export function validate(value, ruleString, data) {
    const ruleList = ruleString.split("|");
    const errors = [];
    for (const rule of ruleList) {
        /* Rules */
        const [ruleName, arg] = rule.split(":");
        const fn = rules[ruleName];
        const fnWithData = rulesWithData[ruleName];
        /* Validations */
        if (!fn && !fnWithData)
            continue;
        /* Response */
        if (fn) {
            let isValidFn = fn(value, arg);
            if (!isValidFn) {
                const template = defaultLocale[ruleName] || "Validation failed";
                const message = template.replace(":arg", arg || "");
                errors.push(message);
            }
        }
        else if (fnWithData) {
            const { isValidFnWithData, args } = fnWithData(value, arg, data);
            if (!isValidFnWithData) {
                const template = defaultLocale[ruleName] || "Validation failed";
                let message = template;
                for (const [key, value] of Object.entries(args || {})) {
                    message = message.replace(`:${key}`, value);
                }
                errors.push(message);
            }
        }
    }
    return {
        valid: errors.length === 0,
        errors,
    };
}