58 lines
1.4 KiB
JavaScript
58 lines
1.4 KiB
JavaScript
'use strict';
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var _ = require('lodash');
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var preconditions = require('preconditions').singleton();
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function LocalStorage(opts) {
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this.type = 'DB';
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opts = opts || {};
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this.ls = opts.ls
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|| ( (typeof localStorage !== 'undefined') ? localStorage : null );
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preconditions.checkState(this.ls,
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'localstorage not available, cannot run plugin');
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};
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LocalStorage.prototype.init = function() {
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};
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LocalStorage.prototype.setCredentials = function(email, password, opts) {
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// NOP
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};
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LocalStorage.prototype.getItem = function(k,cb) {
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preconditions.checkArgument(_.isFunction(cb));
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return cb(null, this.ls.getItem(k));
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};
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/**
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* Same as setItem, but fails if an item already exists
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*/
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LocalStorage.prototype.createItem = function(name, value, callback) {
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preconditions.checkArgument(_.isFunction(callback));
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if (this.ls.getItem(name)) {
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return callback('EEXISTS');
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}
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return this.setItem(name, value, callback);
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};
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LocalStorage.prototype.setItem = function(k,v,cb) {
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preconditions.checkArgument(_.isFunction(cb));
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this.ls.setItem(k,v);
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return cb();
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};
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LocalStorage.prototype.removeItem = function(k,cb) {
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preconditions.checkArgument(_.isFunction(cb));
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this.ls.removeItem(k);
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return cb();
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};
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LocalStorage.prototype.clear = function(cb) {
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preconditions.checkArgument(_.isFunction(cb));
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this.ls.clear();
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return cb();
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};
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module.exports = LocalStorage;
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