| 1 | export function addProperty(object, path, value) {
|
| 2 | const initialSegment = path[0];
|
| 3 | if (path.length === 1) {
|
| 4 | object[initialSegment] = value;
|
| 5 | return;
|
| 6 | }
|
| 7 | let field = object[initialSegment];
|
| 8 | if (field != null) {
|
| 9 | addProperty(field, path.slice(1), value);
|
| 10 | return;
|
| 11 | }
|
| 12 | if (typeof path[1] === 'string') {
|
| 13 | field = Object.create(null);
|
| 14 | }
|
| 15 | else {
|
| 16 | field = [];
|
| 17 | }
|
| 18 | addProperty(field, path.slice(1), value);
|
| 19 | object[initialSegment] = field;
|
| 20 | }
|
| 21 | export function getProperty(object, path) {
|
| 22 | if (!path.length || object == null) {
|
| 23 | return object;
|
| 24 | }
|
| 25 | const newPath = path.slice();
|
| 26 | const key = newPath.shift();
|
| 27 | if (key == null) {
|
| 28 | return;
|
| 29 | }
|
| 30 | const prop = object[key];
|
| 31 | return getProperty(prop, newPath);
|
| 32 | }
|
| 33 | export function getProperties(object, propertyTree) {
|
| 34 | if (object == null) {
|
| 35 | return object;
|
| 36 | }
|
| 37 | const newObject = Object.create(null);
|
| 38 | for (const key in propertyTree) {
|
| 39 | const subKey = propertyTree[key];
|
| 40 | if (subKey == null) {
|
| 41 | newObject[key] = object[key];
|
| 42 | continue;
|
| 43 | }
|
| 44 | const prop = object[key];
|
| 45 | newObject[key] = deepMap(prop, function deepMapFn(item) {
|
| 46 | return getProperties(item, subKey);
|
| 47 | });
|
| 48 | }
|
| 49 | return newObject;
|
| 50 | }
|
| 51 | export function propertyTreeFromPaths(paths) {
|
| 52 | const propertyTree = Object.create(null);
|
| 53 | for (const path of paths) {
|
| 54 | addProperty(propertyTree, path, null);
|
| 55 | }
|
| 56 | return propertyTree;
|
| 57 | }
|
| 58 | function deepMap(arrayOrItem, fn) {
|
| 59 | if (Array.isArray(arrayOrItem)) {
|
| 60 | return arrayOrItem.map(nestedArrayOrItem => deepMap(nestedArrayOrItem, fn));
|
| 61 | }
|
| 62 | return fn(arrayOrItem);
|
| 63 | }
|