nope-js-node
Version:
NoPE Runtime for Nodejs. For Browser-Support please use nope-browser
70 lines (69 loc) • 1.83 kB
JavaScript
;
/**
* @author Martin Karkowski
* @email m.karkowski@zema.de
* @desc [description]
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.difference = exports.union = exports.determineDifference = void 0;
/**
* Helper Function which will determine the Difference between set01 and set02.
* If values are in set02 and not in set01 they will be putted into added. If
* items are in set01 but not in set02 they will be added to removed.
*
* @export
* @template T
* @param {Set<T>} set01 Base Set
* @param {Set<T>} set02 Set to compare it with
* @return {*}
*/
function determineDifference(set01, set02) {
const added = new Set();
const removed = new Set();
// We iterate over the set01 and
// set02. If elements of set01 arent
// present in set02 => they have been
// removed
for (const item of set01) {
if (!set02.has(item)) {
removed.add(item);
}
}
// If elements of set02 arent
// present in set01 => they have been
// added
for (const item of set02) {
if (!set01.has(item)) {
added.add(item);
}
}
return {
added,
removed,
};
}
exports.determineDifference = determineDifference;
/**
* Unions the two sets
* @param {Set<T>} set01
* @param {Set<T>} set01
* @returns
*/
function union(set01, set02) {
return new Set([...set01, ...set02]);
}
exports.union = union;
/**
* Substracts set02 from set01
* @param {Set<T>} set01 Base Set
* @param {Set<T>} set02 The Set to substract
* @returns
*/
function difference(set01, set02) {
const diff = new Set([...set01]);
for (const s of set02) {
diff.delete(s);
}
return diff;
}
exports.difference = difference;