create-nodeapi-backend/template/javascript/src/utils/customValidation.js

A powerful Node.js backend boilerplate with Express, MongoDB, Firebase, JWT auth, Nodemailer, cron jobs, input validation (Joi), and serverless support for Vercel. Scaffold a full-featured API backend in seconds.

const objectId = (value, helpers) => {
    if (!value.match(/^[0-9a-fA-F]{24}$/)) {
      return helpers.message('"{{#label}}" must be a valid mongo id');
    }
    return value;
  };
  
  const password = (value, helpers) => {
    if (value.length < 8) {
      return helpers.message("password must be at least 8 characters");
    }
    if (!value.match(/\d/) || !value.match(/[a-zA-Z]/)) {
      return helpers.message(
        "password must contain at least 1 letter and 1 number"
      );
    }
    return value;
  };
  
  const validateProviderName = (value, helpers) => {
    const validProviderNames = ["MTN", "Airtel", "Glo", "9Mobile"];
    if (!validProviderNames.includes(value)) {
      return helpers.error("any.invalid");
    }
    return value;
  };
  
  module.exports = {
    objectId,
    password,
    validateProviderName,
  };