nodemon

const nodemon: Nodemon;

type Nodemon = {
    (settings: NodemonSettings): Nodemon;
    removeAllListeners(event: NodemonEventHandler): Nodemon;
    emit(type: NodemonEventHandler, event?: any): Nodemon;
    reset(callback: Function): Nodemon;
    restart(): Nodemon;
    config: NodemonSettings;
} & NodemonEventListener & {
        [K in keyof NodemonEventListener as 'addListener']: NodemonEventListener[K];
    } & {
        [K in keyof NodemonEventListener as 'once']: NodemonEventListener[K];
    };

type NodemonEventConfig = {
    run: boolean;
    system: {
        cwd: string;
    };
    required: boolean;
    dirs: string[];
    timeout: number;
    options: NodemonConfig;
    lastStarted: number;
    loaded: string[];
    load: (
        settings: NodemonSettings,
        ready: (config: NodemonEventConfig) => void
    ) => void;
    reset: () => void;
};

type NodemonEventHandler =
    | 'start'
    | 'crash'
    | 'exit'
    | 'quit'
    | 'restart'
    | 'config:update'
    | 'log'
    | 'readable'
    | 'stdout'
    | 'stderr';

type NodemonEventListener = {
    on(event: 'start' | 'crash' | 'readable', listener: () => void): Nodemon;
    on(event: 'log', listener: (e: NodemonEventLog) => void): Nodemon;
    on(event: 'stdout' | 'stderr', listener: (e: string) => void): Nodemon;
    on(event: 'restart', listener: (e?: NodemonEventRestart) => void): Nodemon;
    on(event: 'quit', listener: (e?: NodemonEventQuit) => void): Nodemon;
    on(event: 'exit', listener: (e?: number) => void): Nodemon;
    on(event: 'config:update', listener: (e?: NodemonEventConfig) => void): Nodemon;
};

type NodemonEventLog = {
    /**
    - detail: what you get with nodemon --verbose.
    - status: subprocess starting, restarting.
    - fail: is the subprocess crashing.
    - error: is a nodemon system error.
  */
    type: 'detail' | 'log' | 'status' | 'error' | 'fail';
    /** the plain text message */
    message: string;
    /** contains the terminal escape codes to add colour, plus the "[nodemon]" prefix */
    colour: string;
};

type NodemonEventQuit = 143 | 130;