Convert copy-res to typescript

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

src/@types/cpx.d.ts

@@ -0,0 +1,43 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import "cpx";
+import type EventEmitter from "events";
+
+declare module "cpx" {
+    export class Cpx extends EventEmitter {
+        public constructor(source: string, outDir: string, options?: object);
+
+        /**
+         * Copy all files that matches `this.source` pattern to `this.outDir`.
+         *
+         * @param {function} [cb = null] - A callback function.
+         * @returns {void}
+         */
+        public copy(cb: Function | null): void;
+
+        /**
+         * Copy all files that matches `this.source` pattern to `this.outDir`.
+         * And watch changes in `this.base`, and copy only the file every time.
+         *
+         * @returns {void}
+         * @throws {Error} This had been watching already.
+         */
+        public watch(): void;
+    }
+}
+
+export as namespace Cpx;

src/@types/loader-utils.d.ts

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+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import * as LoaderUtils from "loader-utils";
+
+declare module "loader-utils" {
+    export function getHashDigest(
+        buffer: Buffer,
+        hashType: null,
+        digestType: LoaderUtils.DigestType,
+        maxLength: number,
+    ): string;
+}
+
+export as namespace Cpx;