1class Validator {
2    static rules = {
3        number: (val) => typeof val === 'number' && !isNaN(val),
4        string: (val) => typeof val === 'string' && val.length > 0,
5        email: (val) => /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(val),
6        array: (val) => Array.isArray(val) && val.length > 0
7    };
8
9    static validate(input, schema) {
10        const results = Object.entries(schema).map(([field, rules]) => {
11            const value = input[field];
12            const errors = rules
13                .filter(rule => !this.rules[rule](value))
14                .map(rule => `Invalid ${rule}`);
15            
16            return { field, valid: errors.length === 0, errors };
17        });
18
19        return {
20            valid: results.every(r => r.valid),
21            fields: results
22        };
23    }
24}
25
26const input = {
27    age: "25",
28    email: "[email protected]",
29    tags: []
30};
31
32const schema = {
33    age: ['number'],
34    email: ['string', 'email'],
35    tags: ['array']
36};
37
38console.log(Validator.validate(input, schema));