How do I handle errors with class-validator in TypeScript?

How do I handle errors with class-validator in TypeScript?

You can handle errors in class-validator by using the validate function and catching validation errors.

Can you show me a code example?

Sure! Here's a simple example:

import { validate } from 'class-validator';

class User {
    name: string;
    age: number;

    constructor(name: string, age: number) {
        this.name = name;
        this.age = age;
    }
}

const user = new User('', -1);
validate(user).then(errors => {
    if (errors.length > 0) {
        console.log('Validation failed. Errors: ', errors);
    } else {
        console.log('Validation succeeded!');
    }
});

What kind of errors can I expect?

You can expect errors related to required fields, type mismatches, and custom validation rules.