getLocalProjectConfigFile() {
		let configFiles = this.getLocalProjectConfigFiles();
		// Add the configFiles[0] in case of a test, where no file exists on the file system
		let configFile = configFiles.find((path) => path && fs.existsSync(path)) || configFiles[0];
		if (configFile) {
			return configFile;
		}
	}
Normalises local project config file path.

@method
@returns {String|undefined} - The normalised local project config file path.