@yobta/validator/lib/number/number.js

Tree-shakable es6 validator

import { rule } from '../rule/rule.js';
export const numberMessage = 'It should be a number';
export const number = (message = numberMessage) => rule((value = '') => {
    if (value === '') {
        return undefined;
    }
    try {
        const n = Number(value);
        if (Number.isFinite(n)) {
            return n;
        }
    }
    catch { }
    throw new Error(message);
});