molstar
Version:
A comprehensive macromolecular library.
127 lines • 4.21 kB
JavaScript
;
/**
* Copyright (c) 2017 mol* contributors, licensed under MIT, See LICENSE file for more info.
*
* @author David Sehnal <david.sehnal@gmail.com>
* @author Alexander Rose <alexander.rose@weirdbyte.de>
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.objectForEach = exports.mapObjectMap = exports.deepClone = exports.shallowMergeArray = exports.shallowMerge = exports.shallowEqual = exports.shallowMerge2 = exports.assignIfUndefined = void 0;
var hasOwnProperty = Object.prototype.hasOwnProperty;
/** Assign to the object if a given property in update is undefined */
function assignIfUndefined(to, full) {
for (var _i = 0, _a = Object.keys(full); _i < _a.length; _i++) {
var k = _a[_i];
if (!hasOwnProperty.call(full, k))
continue;
if (typeof to[k] === 'undefined') {
to[k] = full[k];
}
}
return to;
}
exports.assignIfUndefined = assignIfUndefined;
/** Create new object if any property in "update" changes in "source". */
function shallowMerge2(source, update) {
// Adapted from LiteMol (https://github.com/dsehnal/LiteMol)
var changed = false;
for (var _i = 0, _a = Object.keys(update); _i < _a.length; _i++) {
var k = _a[_i];
if (!hasOwnProperty.call(update, k))
continue;
if (update[k] !== source[k]) {
changed = true;
break;
}
}
if (!changed)
return source;
return Object.assign({}, source, update);
}
exports.shallowMerge2 = shallowMerge2;
function shallowEqual(a, b) {
if (!a) {
if (!b)
return true;
return false;
}
if (!b)
return false;
var keys = Object.keys(a);
if (Object.keys(b).length !== keys.length)
return false;
for (var _i = 0, keys_1 = keys; _i < keys_1.length; _i++) {
var k = keys_1[_i];
if (!hasOwnProperty.call(a, k) || a[k] !== b[k])
return false;
}
return true;
}
exports.shallowEqual = shallowEqual;
function shallowMerge(source) {
var rest = [];
for (var _i = 1; _i < arguments.length; _i++) {
rest[_i - 1] = arguments[_i];
}
return shallowMergeArray(source, rest);
}
exports.shallowMerge = shallowMerge;
function shallowMergeArray(source, rest) {
// Adapted from LiteMol (https://github.com/dsehnal/LiteMol)
var ret = source;
for (var s = 0; s < rest.length; s++) {
if (!rest[s])
continue;
ret = shallowMerge2(source, rest[s]);
if (ret !== source) {
for (var i = s + 1; i < rest.length; i++) {
ret = Object.assign(ret, rest[i]);
}
break;
}
}
return ret;
}
exports.shallowMergeArray = shallowMergeArray;
/** Simple deep clone for number, boolean, string, null, undefined, object, array */
function deepClone(source) {
if (null === source || 'object' !== typeof source)
return source;
if (source instanceof Array) {
var copy = [];
for (var i = 0, len = source.length; i < len; i++) {
copy[i] = deepClone(source[i]);
}
return copy;
}
// `instanceof Object` does not find `Object.create(null)`
if (typeof source === 'object' && !('prototype' in source)) {
var copy = {};
for (var k in source) {
if (hasOwnProperty.call(source, k))
copy[k] = deepClone(source[k]);
}
return copy;
}
throw new Error("Can't clone, type \"" + typeof source + "\" unsupported");
}
exports.deepClone = deepClone;
function mapObjectMap(o, f) {
var ret = {};
for (var _i = 0, _a = Object.keys(o); _i < _a.length; _i++) {
var k = _a[_i];
ret[k] = f(o[k]);
}
return ret;
}
exports.mapObjectMap = mapObjectMap;
function objectForEach(o, f) {
if (!o)
return;
for (var _i = 0, _a = Object.keys(o); _i < _a.length; _i++) {
var k = _a[_i];
f(o[k], k);
}
}
exports.objectForEach = objectForEach;
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