How to use the hint/dist/src/lib/utils/debug.debug function in hint

import hasAttributeWithValue from 'hint/dist/src/lib/utils/network/has-attribute-with-value';
import isHTMLDocument from 'hint/dist/src/lib/utils/network/is-html-document';

import {
    BrowserInfo, IConnector,
    IAsyncHTMLElement, ElementFound, Event, FetchEnd, FetchError, ILauncher, TraverseUp, TraverseDown,
    Response, Request, NetworkData
} from 'hint/dist/src/lib/types';

import { normalizeHeaders } from '@hint/utils-connector-tools/dist/src/normalize-headers';
import { RedirectManager } from '@hint/utils-connector-tools/dist/src/redirects';
import { Requester } from '@hint/utils-connector-tools/dist/src/requester';

import { Engine } from 'hint/dist/src/lib/engine';

const debug: debug.IDebugger = d(__filename);

export class Connector implements IConnector {
    /** The final set of options resulting of merging the users, and default ones. */
    private _options;
    /** The default headers to do any request. */
    private _headers;
    /** The original URL to collect. */
    private _href: string;
    /** The final URL after redirects (if they exist) */
    private _finalHref: string;
    /** The instance of hint that is using this connector. */
    private _server: Engine;
    /** The client to talk to the browser. */
    private _client: Crdp.CrdpClient;
    /** A set of requests done by the connector to retrieve initial information more easily. */
    private _requests: Map;

import { Crdp } from 'chrome-remote-debug-protocol';

import { IAsyncHTMLDocument, IAsyncHTMLElement } from 'hint/dist/src/lib/types/async-html'; //eslint-disable-line
import { debug as d } from 'hint/dist/src/lib/utils/debug';
import { ProblemLocation } from 'hint/dist/src/lib/types';

const debug: debug.IDebugger = d(__filename);

/** An implementation of AsyncHTMLDocument on top of the Chrome Debugging Protocol */
export class CDPAsyncHTMLDocument implements IAsyncHTMLDocument {
    /** The DOM domain of the CDP client. */
    private _DOM: Crdp.DOMClient;
    /** The root element of the real DOM. */
    private _dom!: Crdp.DOM.Node;
    /** A map with all the nodes accessible using `nodeId`. */
    private _nodes: Map = new Map();
    /** outerHTML of the page. */
    private _outerHTML: string = '';

    public constructor(DOM: Crdp.DOMClient) {
        this._DOM = DOM;
    }