code: function verifyTsConfig(configFilePath) {
  	/**
  	 * @type {string[]}
  	 */
  	const warnings = [];
  	const createConfigFileHost = {
  		onUnRecoverableConfigFileDiagnostic() {},
  		useCaseSensitiveFileNames: false,
  		readDirectory: typescript.sys.readDirectory,
  		fileExists: typescript.sys.fileExists,
  		readFile: typescript.sys.readFile,
  		getCurrentDirectory: typescript.sys.getCurrentDirectory,
  	};
  	const tsconfig = typescript.getParsedCommandLineOfConfigFile(configFilePath, {}, createConfigFileHost);
  	if (!tsconfig) {
  		return [`could not parse "${configFilePath}"`];
  	}
  	if (tsconfig.options.skipLibCheck === undefined) {
  		warnings.push(
  			'skipLibCheck option was NOT specified\n' +
  				'By default the fork-ts-checker-webpack-plugin will check all types inside the node_modules directory\n' +
  				'even for unused dependencies and slow down the type checking a lot.\n' +
  				'To skip that checking add the following line to your tsconfig.json compilerOptions configuration:\n' +
  				'"skipLibCheck": true\n' +
  				'To keep the default behaviour with possible performance penalties set skipLibCheck to false to hide this warning.\n'
  		);
  	}
  	if (tsconfig.options.moduleResolution === undefined) {
  		warnings.push(
  			'moduleResolution option was NOT specified\n' +
  				'This will result in typescript warnings like "module not found".\n' +
  				'To fix that add the following line to your tsconfig.json compilerOptions configuration:\n' +
  				'"moduleResolution": "node"\n' +
  				'To keep the default behaviour with possible type checking errors set moduleResolution to "classic" to hide this warning.\n'
  		);
  	}
  
  	return warnings;
  }
docs: Check for known TSConfig issues and output warnings
  @param {string} configFilePath
  @returns {string[]} warnings