tin-validator

Validate and mask a U.S. Taxpayer Identification Number (TIN). A TIN may be an Employer Identification Number (EIN), an Individual Taxpayer Identification Number (ITIN) or a Social Security number (SSN).

Status

Installation

Install the package via npm:

npm install tin-validator --save

Usage

isValid(value)

This method validates if the given value is a valid Taxpayer Identification Number.

Arguments

1. value (*): The value to validate.

Returns

(boolean): Returns whether the input value is a valid TIN or not.

Example

isValid({});
// => false

isValid('9-0-0700000');
// => false

isValid('900-70-0000');
// => true

isValid('900700000');
// => true

mask(value)

This method will help you protect this sensitive piece of information by obfuscating some digits.

Arguments

1. value (*): The value to mask.

Returns

(string): Returns the masked value by replacing value certain digits by 'X'.

Example

mask({});
// Throws an Error.

mask('9-0-0700000');
// Throws an Error.

mask('900-70-0000');
// => XXX-XX-0000

mask('900700000');
// => XXXXX0000

sanitize(value)

This method will remove all non numeric characters from the value.

Arguments

1. value (*): The value to sanitize.

Returns

(string): Returns the sanitized value containing only numeric characters.

Example

sanitize('9-0 0700000');
// => 900700000

sanitize('900a7#$0foobar0000');
// => 900700000

Tests

To test using a local installation of node.js:

npm test

To test using Docker exclusively:

docker-compose run --rm sut

Release

npm version [<newversion> | major | minor | patch] --message "Release %s"

License

MIT