39 lines
1.1 KiB
JavaScript
39 lines
1.1 KiB
JavaScript
|
"use strict";
|
||
|
|
|
||
|
|
Object.defineProperty(exports, "__esModule", {
|
||
|
|
value: true
|
||
|
|
});
|
||
|
|
exports.default = assign;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Source: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
|
||
|
|
*
|
||
|
|
* Similar to Object.assign(), but it doesn't execute getters. This allows us to have
|
||
|
|
* lazy properties on an object and still be able to merge them together
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
function assign(target, ...sources) {
|
||
|
|
sources.forEach(source => {
|
||
|
|
let descriptors = Object.keys(source).reduce((acc, key) => {
|
||
|
|
const propertyDescriptor = Object.getOwnPropertyDescriptor(source, key);
|
||
|
|
|
||
|
|
if (propertyDescriptor !== undefined) {
|
||
|
|
acc[key] = propertyDescriptor;
|
||
|
|
}
|
||
|
|
|
||
|
|
return acc;
|
||
|
|
}, {}); // by default, Object.assign copies enumerable Symbols too
|
||
|
|
|
||
|
|
Object.getOwnPropertySymbols(source).forEach(sym => {
|
||
|
|
let descriptor = Object.getOwnPropertyDescriptor(source, sym);
|
||
|
|
|
||
|
|
if (descriptor && descriptor.enumerable) {
|
||
|
|
descriptors[sym.toString()] = descriptor;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
Object.defineProperties(target, descriptors);
|
||
|
|
});
|
||
|
|
return target;
|
||
|
|
}
|
||
|
|
|
||
|
|
//# sourceMappingURL=assign.js.map
|