@graphql-tools/stitching-directives
Version:
A set of utils for faster development of GraphQL tools
71 lines (70 loc) • 2.06 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.propertyTreeFromPaths = exports.getProperties = exports.getProperty = exports.addProperty = void 0;
function addProperty(object, path, value) {
const initialSegment = path[0];
if (path.length === 1) {
object[initialSegment] = value;
return;
}
let field = object[initialSegment];
if (field != null) {
addProperty(field, path.slice(1), value);
return;
}
if (typeof path[1] === 'string') {
field = Object.create(null);
}
else {
field = [];
}
addProperty(field, path.slice(1), value);
object[initialSegment] = field;
}
exports.addProperty = addProperty;
function getProperty(object, path) {
if (!path.length || object == null) {
return object;
}
const newPath = path.slice();
const key = newPath.shift();
if (key == null) {
return;
}
const prop = object[key];
return getProperty(prop, newPath);
}
exports.getProperty = getProperty;
function getProperties(object, propertyTree) {
if (object == null) {
return object;
}
const newObject = Object.create(null);
for (const key in propertyTree) {
const subKey = propertyTree[key];
if (subKey == null) {
newObject[key] = object[key];
continue;
}
const prop = object[key];
newObject[key] = deepMap(prop, function deepMapFn(item) {
return getProperties(item, subKey);
});
}
return newObject;
}
exports.getProperties = getProperties;
function propertyTreeFromPaths(paths) {
const propertyTree = Object.create(null);
for (const path of paths) {
addProperty(propertyTree, path, null);
}
return propertyTree;
}
exports.propertyTreeFromPaths = propertyTreeFromPaths;
function deepMap(arrayOrItem, fn) {
if (Array.isArray(arrayOrItem)) {
return arrayOrItem.map(nestedArrayOrItem => deepMap(nestedArrayOrItem, fn));
}
return fn(arrayOrItem);
}