83 lines
3.1 KiB
JavaScript
83 lines
3.1 KiB
JavaScript
|
"use strict";
|
||
|
|
// The MIT License (MIT)
|
||
|
|
//
|
||
|
|
// Copyright (c) 2022 Firebase
|
||
|
|
//
|
||
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
|
|
// of this software and associated documentation files (the "Software"), to deal
|
||
|
|
// in the Software without restriction, including without limitation the rights
|
||
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||
|
|
// copies of the Software, and to permit persons to whom the Software is
|
||
|
|
// furnished to do so, subject to the following conditions:
|
||
|
|
//
|
||
|
|
// The above copyright notice and this permission notice shall be included in all
|
||
|
|
// copies or substantial portions of the Software.
|
||
|
|
//
|
||
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||
|
|
// SOFTWARE.
|
||
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
||
|
|
exports.Change = exports.applyFieldMask = void 0;
|
||
|
|
/** @hidden */
|
||
|
|
function applyFieldMask(sparseBefore, after, fieldMask) {
|
||
|
|
const before = { ...after };
|
||
|
|
const masks = fieldMask.split(',');
|
||
|
|
for (const mask of masks) {
|
||
|
|
const parts = mask.split('.');
|
||
|
|
const head = parts[0];
|
||
|
|
const tail = parts.slice(1).join('.');
|
||
|
|
if (parts.length > 1) {
|
||
|
|
before[head] = applyFieldMask(sparseBefore === null || sparseBefore === void 0 ? void 0 : sparseBefore[head], after[head], tail);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
const val = sparseBefore === null || sparseBefore === void 0 ? void 0 : sparseBefore[head];
|
||
|
|
if (typeof val === 'undefined') {
|
||
|
|
delete before[mask];
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
before[mask] = val;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return before;
|
||
|
|
}
|
||
|
|
exports.applyFieldMask = applyFieldMask;
|
||
|
|
/**
|
||
|
|
* The Functions interface for events that change state, such as
|
||
|
|
* Realtime Database or Cloud Firestore `onWrite` and `onUpdate`.
|
||
|
|
*
|
||
|
|
* For more information about the format used to construct `Change` objects, see
|
||
|
|
* {@link ChangeJson} below.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
class Change {
|
||
|
|
constructor(before, after) {
|
||
|
|
this.before = before;
|
||
|
|
this.after = after;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* @hidden
|
||
|
|
* Factory method for creating a Change from a `before` object and an `after`
|
||
|
|
* object.
|
||
|
|
*/
|
||
|
|
static fromObjects(before, after) {
|
||
|
|
return new Change(before, after);
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* @hidden
|
||
|
|
* Factory method for creating a Change from a JSON and an optional customizer
|
||
|
|
* function to be applied to both the `before` and the `after` fields.
|
||
|
|
*/
|
||
|
|
static fromJSON(json, customizer = (x) => x) {
|
||
|
|
let before = { ...json.before };
|
||
|
|
if (json.fieldMask) {
|
||
|
|
before = applyFieldMask(before, json.after, json.fieldMask);
|
||
|
|
}
|
||
|
|
return Change.fromObjects(customizer(before || {}), customizer(json.after || {}));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
exports.Change = Change;
|