Function start

index.tsx:403–419

()

        "channel-attach": channelAttachMenuPatch
    },
    start() {
        if (uploadAddFilesInterceptor) {
            return;
        }

        uploadAddFilesInterceptor = event => interceptUploadAddFiles(event);
        FluxDispatcher.addInterceptor(uploadAddFilesInterceptor);

        pasteEventListener = event => handlePaste(event);
        document.addEventListener("paste", pasteEventListener, true);

        dragOverListener = event => handleDragOver(event as DragEvent);
        document.addEventListener("dragover", dragOverListener, true);

        dropEventListener = event => handleFileDrop(event as DragEvent);
        document.addEventListener("drop", dropEventListener, true);
    },
    stop() {
        if (!uploadAddFilesInterceptor) {
            return;