@t7/utils/dist/_storage.js

Utility methods for T7 components.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

// ================================
// Flag for `localStorage` support.
// ================================
var hasStorageSupport = function () {
  // Assume no support.
  var bool = false; // Used in the `try`.

  var key = 'TEST_KEY';
  var val = 'TEST_VAL'; // Rigorously test for support.

  try {
    // Set the key/value.
    window.localStorage.setItem(key, val); // Are we able to read it?

    bool = window.localStorage.getItem(key) === val; // Delete the key/value.

    window.localStorage.removeItem(key);
  } catch (e) {} // Return the boolean.


  return bool;
}(); // =======================
// Cache: Alias to object.
// =======================


var cacheFallback = {
  clear: function clear() {
    for (var key in cache) {
      if (key !== 'clear' && cache.hasOwnProperty(key)) {
        delete cache[key];
      }
    }
  }
};
var cache = hasStorageSupport ? window.localStorage : cacheFallback; // =======================
// Cache: Clear key/value.
// =======================

var clear = function clear() {
  cache.clear();
}; // ==============
// Cache: Getter.
// ==============


var get = function get(key) {
  var data = cache[key]; // Exit, if no data.

  if (!data) {
    return;
  }

  try {
    // Attempt to parse.
    data = JSON.parse(data);
  } catch (e) {
    // Set to original.
    data = cache[key];
  }

  return data;
}; // ==============
// Cache: Setter.
// ==============


var set = function set(key, data) {
  if (key === 'clear' || key === 'getItem' || key === 'key' || key === 'length' || key === 'removeItem' || key === 'setItem') {
    throw new Error('Cannot overwrite: window.localStorage.' + key);
  }

  if (_typeof(data) === 'object') {
    data = JSON.stringify(data);
  }

  cache[key] = data;
}; // ==========================
// Cache: Remove single item.
// ==========================


var remove = function remove(key) {
  delete cache[key];
}; // ==============
// Export object.
// ==============


var storage = {
  clear: clear,
  get: get,
  remove: remove,
  set: set // Expose methods.

};
var _default = storage;
exports.default = _default;