82 lines
1.9 KiB
JavaScript
82 lines
1.9 KiB
JavaScript
import wrap from './wrap';
|
|
import isEmpty from './util/isEmpty';
|
|
import defaultObject from './util/defaultObject';
|
|
import isPlainObject from 'lodash/lang/isPlainObject';
|
|
|
|
function reduce(object, callback, initialValue) {
|
|
return Object.keys(object).reduce((acc, key) => {
|
|
return callback(acc, object[key], key);
|
|
}, initialValue);
|
|
}
|
|
|
|
function resolveUpdates(updates, object) {
|
|
return reduce(updates, (acc, value, key) => {
|
|
let updatedValue = value;
|
|
|
|
if (!Array.isArray(value) && value !== null && typeof value === 'object') {
|
|
updatedValue = update(value, object[key]);
|
|
} else if (typeof value === 'function') {
|
|
updatedValue = value(object[key]);
|
|
}
|
|
|
|
if (object[key] !== updatedValue) {
|
|
acc[key] = updatedValue;
|
|
}
|
|
|
|
return acc;
|
|
}, {});
|
|
}
|
|
|
|
function updateArray(updates, object) {
|
|
const newArray = [...object];
|
|
|
|
Object.keys(updates).forEach((key) => {
|
|
newArray[key] = updates[key];
|
|
});
|
|
|
|
return newArray;
|
|
}
|
|
|
|
/**
|
|
* Recursively update an object or array.
|
|
*
|
|
* Can update with values:
|
|
* update({ foo: 3 }, { foo: 1, bar: 2 });
|
|
* // => { foo: 3, bar: 2 }
|
|
*
|
|
* Or with a function:
|
|
* update({ foo: x => (x + 1) }, { foo: 2 });
|
|
* // => { foo: 3 }
|
|
*
|
|
* @function
|
|
* @name update
|
|
* @param {Object|Function} updates
|
|
* @param {Object|Array} object to update
|
|
* @return {Object|Array} new object with modifications
|
|
*/
|
|
function update(updates, object, ...args) {
|
|
if (typeof updates === 'function') {
|
|
return updates(object, ...args);
|
|
}
|
|
|
|
if (!isPlainObject(updates)) {
|
|
return updates;
|
|
}
|
|
|
|
const defaultedObject = defaultObject(object, updates);
|
|
|
|
const resolvedUpdates = resolveUpdates(updates, defaultedObject);
|
|
|
|
if (isEmpty(resolvedUpdates)) {
|
|
return defaultedObject;
|
|
}
|
|
|
|
if (Array.isArray(defaultedObject)) {
|
|
return updateArray(resolvedUpdates, defaultedObject);
|
|
}
|
|
|
|
return { ...defaultedObject, ...resolvedUpdates };
|
|
}
|
|
|
|
export default wrap(update, 2);
|