/** Experimental, allow dropping files from Unity into the running scene.
 * @param {"build" | "serve"} command
 * @param {import('../types/needleConfig').needleMeta | null | undefined} config
 * @param {import('../types/userconfig.js').userSettings} userSettings
 * @returns {import('vite').Plugin | null | undefined}
 */
export function needleDrop(command: "build" | "serve", config: import("../types/needleConfig").needleMeta | null | undefined, userSettings: import("../types/userconfig.js").userSettings): import("vite").Plugin | null | undefined;