xl-infinite-tree/lib/lookup-table.js

A browser-ready tree library that can efficiently display a large amount of data using infinite scrolling.

"use strict";

exports.__esModule = true;

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var LookupTable = function () {
    function LookupTable() {
        _classCallCheck(this, LookupTable);

        this.data = {};
    }

    LookupTable.prototype.clear = function clear() {
        this.data = {};
    };

    LookupTable.prototype.get = function get(key) {
        return this.data[key];
    };

    LookupTable.prototype.has = function has(key) {
        return this.data[key] !== undefined;
    };

    LookupTable.prototype.set = function set(key, value) {
        this.data[key] = value;
        return value;
    };

    LookupTable.prototype.unset = function unset(key) {
        if (this.data[key] !== undefined) {
            delete this.data[key];
        }
    };

    return LookupTable;
}();

exports["default"] = LookupTable;