| 9 | * Returns null if realpathSync fails on the existing ancestor. |
| 10 | */ |
| 11 | export function resolveRealPath(absolutePath: string): string | null { |
| 12 | let dir = path.resolve(absolutePath); |
| 13 | const root = path.parse(dir).root; |
| 14 | const missed: string[] = []; |
| 15 | |
| 16 | while (true) { |
| 17 | try { |
| 18 | fs.lstatSync(dir); |
| 19 | try { |
| 20 | return path.join(fs.realpathSync(dir), ...missed); |
| 21 | } catch { |
| 22 | return null; |
| 23 | } |
| 24 | } catch { |
| 25 | if (dir === root) return null; |
| 26 | missed.unshift(path.basename(dir)); |
| 27 | dir = path.dirname(dir); |
| 28 | } |
| 29 | } |
| 30 | } |