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node_modules/firebase-functions/lib/common/change.js

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+"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;
+/** @internal */
+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 Cloud Functions interface for events that change state, such as
+ * Realtime Database or Cloud Firestore `onWrite` and `onUpdate` events.
+ *
+ * For more information about the format used to construct `Change` objects, see
+ * {@link ChangeJson} below.
+ *
+ */
+class Change {
+    /**
+     * Factory method for creating a `Change` from a `before` object and an `after`
+     * object.
+     */
+    static fromObjects(before, after) {
+        return new Change(before, after);
+    }
+    /**
+     * Factory method for creating a `Change` from 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 || {}));
+    }
+    constructor(before, after) {
+        this.before = before;
+        this.after = after;
+    }
+}
+exports.Change = Change;