elliptical-datetime/lib-es/year.js

Elliptical phrases to handle natural language dates and times

/** @jsx createElement */

import { createElement } from 'elliptical';
import { DigitString } from 'elliptical-number';

function suppressYear(input) {
  return (/^('\d|\d|\d{3})$/.test(input)
  );
}

function mapResult(result) {
  if (result.twoDigitYear) {
    var decade = parseInt(result.twoDigitYear, 10);
    var year = decade < 29 ? 2000 + decade : 1900 + decade;
    return { year: year, _ambiguousCentury: true };
  } else if (result.fourDigitYear) {
    return { year: parseInt(result.fourDigitYear, 10) };
  }
}

var defaultProps = {
  label: 'year'
};

function describe(_ref) {
  var props = _ref.props;

  return createElement(
    'placeholder',
    {
      suppressWhen: suppressYear,
      label: props.label,
      arguments: props.phraseArguments || (props.phraseArguments ? [props.phraseArgument] : [props.label]) },
    createElement(
      'choice',
      { limit: 1 },
      createElement(
        'sequence',
        null,
        createElement('literal', { text: '\'', optional: true, limited: true }),
        createElement(DigitString, { minLength: 2, maxLength: 2, id: 'twoDigitYear', label: 'yy' })
      ),
      createElement(DigitString, { minLength: 4, maxLength: 4, id: 'fourDigitYear', label: 'yyyy' })
    )
  );
}

export var Year = { mapResult: mapResult, describe: describe, defaultProps: defaultProps };