feat: show call participants in room list (Discord-style)

apps/web/src/utils/SnakedObject.ts

@@ -0,0 +1,38 @@
+/*
+Copyright 2024 New Vector Ltd.
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
+Please see LICENSE files in the repository root for full details.
+*/
+
+export function snakeToCamel(s: string): string {
+    return s.replace(/._./g, (v) => `${v[0]}${v[2].toUpperCase()}`);
+}
+
+export class SnakedObject<T = Record<string, any>> {
+    private fallbackWarnings = new Set<string>();
+
+    public constructor(private obj: T) {}
+
+    public get<K extends string & keyof T>(key: K, altCaseName?: string): T[K] {
+        const val = this.obj[key];
+        if (val !== undefined) return val;
+
+        const fallbackKey = altCaseName ?? snakeToCamel(key);
+        const fallback = this.obj[<K>fallbackKey];
+        if (!!fallback && !this.fallbackWarnings.has(fallbackKey)) {
+            this.fallbackWarnings.add(fallbackKey);
+            console.warn(`Using deprecated camelCase config ${fallbackKey}`);
+            console.warn(
+                "See https://github.com/vector-im/element-web/blob/develop/docs/config.md#-deprecation-notice",
+            );
+        }
+        return fallback;
+    }
+
+    // Make JSON.stringify() pretend that everything is fine
+    public toJSON(): T {
+        return this.obj;
+    }
+}