csv-validator

nodejs validator for csv file

Features

• Parse csv (supports only file as of now) and convert to json array
• Validate each line with type or RegExp
• Return each line's error with error message
• Support callback and promise
• Non-blocking parsing

Install

npm install csv-validator --save

Example

Without errors:

/** csv file
name,phone,email,country
john,123,[e-mail],PH
doe,456,[e-mail],US
*/
 
const csv = require('csv-validator');
const csvFilePath = '<path to csv file>';
const headers = {
    name: '', // any string
    phone: 1, // any number
    email: /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/, // RegExp
    _country: '' // add '_' as first character of the key to indicate as optional
};
 
csv(csvFilePath, headers)
    .then(console.log) // [ { name: 'john', phone: '123', email: '[e-mail]', country: 'PH' }, { name: 'doe', phone: '456', email: '[e-mail]', country: 'US' } ]

With error:

/** csv file
name,phone,email,country
john,123a,[e-mail],PH
doe,456,[e-mail]
*/
 
const csv = require('csv-validator');
const csvFilePath = '<path to csv file>';
const headers = {
    name: '', // any string
    phone: 1, // any number
    email: /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/, // RegExp
    country: '' // add '_' as first character of the key to indicate as optional
};
 
csv(csvFilePath, headers)
    .then(console.log)
    .catch(console.error) // [ 'Row 1: phone must be a type number', 'Row 2: country is required' ]

Error messages:

• ... must be a type number: the column should be a number
• ... is required: the column should be filled
• ... must be in /^[0-9]?.*/: the column should be in RegExp (in this example: /^[0-9]?$/)

Contribution

• Any pull request for new features and bug fixes is appreciated.
• Just make sure to add test.

LICENSE

MIT