function findRushJsonFolder()

in common/scripts/install-run.js [499:518]

• 20 lines of code
• 5 McCabe index (conditional complexity)

function findRushJsonFolder() {
    if (!_rushJsonFolder) {
        let basePath = __dirname;
        let tempPath = __dirname;
        do {
            const testRushJsonPath = path__WEBPACK_IMPORTED_MODULE_3__.join(basePath, RUSH_JSON_FILENAME);
            if (fs__WEBPACK_IMPORTED_MODULE_1__.existsSync(testRushJsonPath)) {
                _rushJsonFolder = basePath;
                break;
            }
            else {
                basePath = tempPath;
            }
        } while (basePath !== (tempPath = path__WEBPACK_IMPORTED_MODULE_3__.dirname(basePath))); // Exit the loop when we hit the disk root
        if (!_rushJsonFolder) {
            throw new Error(`Unable to find ${RUSH_JSON_FILENAME}.`);
        }
    }
    return _rushJsonFolder;
}