61 lines
1.2 KiB
JavaScript
61 lines
1.2 KiB
JavaScript
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'use strict';
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/*global Promise*/
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var defer;
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if ('function' === typeof setImmediate) {
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defer = setImmediate;
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} else {
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defer = function (fn) { process.nextTick(fn.bind.apply(fn, arguments)); };
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}
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function create(/*opts*/) {
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// don't leak prototypes as implicitly non-null
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var db = Object.create(null);
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return Promise.resolve({
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// required / recommended
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set: function (id, data, fn) {
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db[id] = data;
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if (!fn) { return; }
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defer(fn, null);
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}
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, get: function (id, fn) {
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if (!fn) { return; }
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defer(fn, null, 'undefined' === typeof db[id] ? null : db[id]);
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}
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, touch: function (id, data, fn) {
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db[id] = data;
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if (!fn) { return; }
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defer(fn, null);
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}
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, destroy: function (id, fn) {
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delete db[id];
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if (!fn) { return; }
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defer(fn, null);
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}
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// optional
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, all: function (fn) {
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if (!fn) { return; }
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defer(fn, null, Object.keys(db).map(function (key) {
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return db[key];
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}));
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}
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, length: function (fn) {
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if (!fn) { return; }
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defer(fn, null, Object.keys(db).length);
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}
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, clear: function (fn) {
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db = Object.create(null);
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if (!fn) { return; }
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defer(fn, null);
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}
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});
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}
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module.exports.create = create;
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