validate-types v2.3.0

Validate types

Validate object fields using simple schema. Works in browser or server side. Packs no dependencies and weighs less than 2KB.

Documentation and examples.

Install

npm install validate-types;

Usage example

// require or import library
const validateTypes = require('validate-types');
// import validateTypes from 'validate-types';

// define validation schema
const schema = {
    firstName: String,
    lastName: {
        type: String,
        required: true
    },
    address: String,
    zipCode: [String, Number],
    age: {
        type: Number,
        validator: age => age > 17
    },
    acceptsCookies: {
        type: Boolean,
        default: false
    }
};

// call with schema and object to validate
var result = validateTypes(schema, {
    firstName: 42,
    age: 15
});

console.log(result);
// will output
{
   hasErrors: true,
   hasUndeclaredFields: false,
   errors: [
      {field: 'firstName', test: 'type', message: 'Field "firstName" is of invalid type'},
      {field: 'lastName', test: 'required', message: 'Field "lastName" is required'},
      {field: 'age', test: 'validator', message: 'Field "age" failed validation'}
   ],
   data: {
       firstName: 42,
       age: 15,
       acceptsCookies: false
   },
   undeclaredFields: {}
}

Documentation and examples.