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jf-validators

v1.0.2

Published

Validators for various types of data and occasions

Downloads

8

Readme

jf-validators stable

npm install jf-validators

English

Validators for various types of data and occasions.

Español

Validadores para diversos tipos de datos y ocasiones. Todos los validadores son funciones que aceptan 2 parámetros:

  • value : Valor a validar.
  • config : Configuración a usar por el validador (opcional). Es un objeto para permitir configurar el validador.

El validador debe retornar true en caso de ser válido el valor.

Validadores disponibles

  • number:
    • max-value : Verifica si el valor numérico es menor o igual al valor especificado.
    • min-value : Verifica si el valor numérico es mayor o igual al valor especificado.
  • string:
    • email : Verifica si el texto puede ser considerado como un email.
    • max-length: Verifica si el texto tiene una longitud máxima especificada.
    • min-length: Verifica si el texto tiene la longitud mínima requerida.

Ejemplo de uso

const assert    = require('assert');
const maxLength = require('jf-validators/src/string/max-length');
const minLength = require('jf-validators/src/string/min-length');

const value     = 'Lorem ipsum'; // Texto con 11 caracteres.

// Verifica que la longitud mínima sea 0 (valor por defecto).
assert.equal(true, minLength(value));
// Verifica que la longitud mínima sea 255 (valor por defecto).
assert.equal(true, maxLength(value));
// Configuración de los validadores de tal manera que fallen.
const config = {
    // La longitud máxima permitida es menor que la del valor actual.
    maxLength : value.length - 1,
    // La longitud mínima permitida es mayor que la del valor actual.
    minLength : value.length + 1
}
// false: la longitud actual es de 11 pero el máximo permitido es 10
assert.equal(false, maxLength(value, config));
// false: la longitud actual es de 11 pero el mínimo permitido es 12
assert.equal(false, minLength(value, config));

Se puede ver el archivo ./test.js para más ejemplos de configuraciones.