Class OptionalString

• undefined ends up being converted to ""

Example

const optStr      = OptionalString.create('not empty', {name: 'MyOptStr'});
const optStr2     = OptionalString.create(''); // a.value === ''
const optStr3     = OptionalString.create(undefined); // a.value === ''
const sizeOptStr  = OptionalString.create('foo', {min: 3, max: 4});
const regexOptStr = OptionalString.create('foo', {regex: /fo/});

// extract the Result:
if (optStr3.isSuccess()) {
  console.log(optStr3.getValue()) // OptionalString { _value: '' }
}

Fails

• if not a string (when defined)
• if the value is not matching the regex (when defined)
• if the value is not inside the interval (when defined)