stylelint/dist/utils/matchesStringOrRegExp.js

A mighty, modern CSS linter.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = matchesStringOrRegExp;
/**
 * Compares a string to a second value that, if it fits a certain convention,
 * is converted to a regular expression before the comparison.
 * If it doesn't fit the convention, then two strings are compared.
 *
 * Any strings starting and ending with `/` are interpreted
 * as regular expressions.
 *
 * @param {string|array} input
 * @param {string|regexp|array} comparison
 * @return {boolean|object} `false` if no match is found.
 *   If a match is found, returns an object with these properties:
 *   - `match`: the `input` value that had a match
 *   - `pattern`: the `comparison` pattern that had a match
 */
function matchesStringOrRegExp(input, comparison) {
  if (!Array.isArray(input)) {
    return testAgainstStringOrArray(input, comparison);
  }

  var _iteratorNormalCompletion = true;
  var _didIteratorError = false;
  var _iteratorError = undefined;

  try {
    for (var _iterator = input[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
      var inputItem = _step.value;

      var testResult = testAgainstStringOrArray(inputItem, comparison);
      if (testResult) {
        return testResult;
      }
    }
  } catch (err) {
    _didIteratorError = true;
    _iteratorError = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion && _iterator.return) {
        _iterator.return();
      }
    } finally {
      if (_didIteratorError) {
        throw _iteratorError;
      }
    }
  }

  return false;
}

function testAgainstStringOrArray(value, comparison) {
  if (!Array.isArray(comparison)) {
    return testAgainstString(value, comparison);
  }

  var _iteratorNormalCompletion2 = true;
  var _didIteratorError2 = false;
  var _iteratorError2 = undefined;

  try {
    for (var _iterator2 = comparison[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {
      var comparisonItem = _step2.value;

      var testResult = testAgainstString(value, comparisonItem);
      if (testResult) {
        return testResult;
      }
    }
  } catch (err) {
    _didIteratorError2 = true;
    _iteratorError2 = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion2 && _iterator2.return) {
        _iterator2.return();
      }
    } finally {
      if (_didIteratorError2) {
        throw _iteratorError2;
      }
    }
  }

  return false;
}

function testAgainstString(value, comparison) {
  var comparisonIsRegex = comparison[0] === "/" && comparison[comparison.length - 1] === "/";

  if (comparisonIsRegex) {
    var valueMatches = new RegExp(comparison.slice(1, -1)).test(value);
    return valueMatches ? { match: value, pattern: comparison } : false;
  }

  return value === comparison ? { match: value, pattern: comparison } : false;
}