# ssn-validation
Validate and mask a U.S. Social Security Number (SSN).
Validate and mask Canadian SIN's too.

## Installation
Install the package via `npm`:

```sh
npm install ssn-validation --save
```

## Usage
### `isValid(value)`
This method validates if the given value is a valid `Social Security Number`.

#### Arguments
1. `value` _(*)_: The value to validate.

#### Returns
_(boolean)_:  Returns whether the input value is a valid SSN or not.

#### Example

```js
isValid({});
// => false

isValid('0-1-1234567');
// => false

isValid('011-23-4567');
// => true

isValid('011234567');
// => 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

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

mask('0-1-1234567');
// Throws an Error.

mask('011-23-4567');
// => XXX-XX-4567

mask('011234567');
// => XXXXX4567
```

--------------------------------------------------------------------------------

## Tests
To test using a local installation of `node.js`:

```sh
npm test
```
## License
MIT

[npm-image]: https://img.shields.io/npm/v/ssn-validator.svg?style=flat-square
[npm-url]: https://npmjs.org/package/ssn-validator
[travis-image]: https://img.shields.io/travis/uphold/ssn-validator.svg?style=flat-square
[travis-url]: https://img.shields.io/travis/uphold/ssn-validator.svg?style=flat-square


Social Security Number validator and masker. 

ssn-validation

Social Security Number validator and masker

ronpenton

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ssn-validation

ssn-validation

Installation

Usage

`isValid(value)`

Arguments

Returns

Example

`mask(value)`

Arguments

Returns

Example

Tests

License

Keywords

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ssn-validation

ssn-validation

Installation

Usage

isValid(value)

Arguments

Returns

Example

mask(value)

Arguments

Returns

Example

Tests

License

Keywords

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`isValid(value)`

`mask(value)`