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website/functions/node_modules/firebase-functions/lib/utils.js

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+"use strict";
+// The MIT License (MIT)
+//
+// Copyright (c) 2017 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 });
+const _ = require("lodash");
+function normalizePath(path) {
+    if (!path) {
+        return '';
+    }
+    return path.replace(/^\//, '').replace(/\/$/, '');
+}
+exports.normalizePath = normalizePath;
+function pathParts(path) {
+    if (!path || path === '' || path === '/') {
+        return [];
+    }
+    return normalizePath(path).split('/');
+}
+exports.pathParts = pathParts;
+function joinPath(base, child) {
+    return pathParts(base)
+        .concat(pathParts(child))
+        .join('/');
+}
+exports.joinPath = joinPath;
+function applyChange(src, dest) {
+    // if not mergeable, don't merge
+    if (!_.isPlainObject(dest) || !_.isPlainObject(src)) {
+        return dest;
+    }
+    return pruneNulls(_.merge({}, src, dest));
+}
+exports.applyChange = applyChange;
+function pruneNulls(obj) {
+    for (let key in obj) {
+        if (obj[key] === null) {
+            delete obj[key];
+        }
+        else if (_.isPlainObject(obj[key])) {
+            pruneNulls(obj[key]);
+        }
+    }
+    return obj;
+}
+exports.pruneNulls = pruneNulls;
+function valAt(source, path) {
+    if (source === null) {
+        return null;
+    }
+    else if (typeof source !== 'object') {
+        return path ? null : source;
+    }
+    let parts = pathParts(path);
+    if (!parts.length) {
+        return source;
+    }
+    let cur = source;
+    let leaf;
+    while (parts.length) {
+        let key = parts.shift();
+        if (cur[key] === null || leaf) {
+            return null;
+        }
+        else if (typeof cur[key] === 'object') {
+            if (parts.length) {
+                cur = cur[key];
+            }
+            else {
+                return cur[key];
+            }
+        }
+        else {
+            leaf = cur[key];
+        }
+    }
+    return leaf;
+}
+exports.valAt = valAt;