in src/extension/src/lspclient.ts [559:576]
private compareLSPServerVersions(a: string, b: string): number {
if (!a && b) return -1
if (a && !b) return 1
if (!a && !b) return 0
// Version format is <base>-<pseudo>.
// Base is standard semantic version (e.g., 0.1.2).
// Pseudo version includes timestamp/hash (e.g., 20250515195750-abcdef).
const [baseA, pseudoA = ''] = a.split('-', 2)
const [baseB, pseudoB = ''] = b.split('-', 2)
if (semver.gt(baseA, baseB)) return 1
if (semver.lt(baseA, baseB)) return -1
if (pseudoA > pseudoB) return 1
if (pseudoA < pseudoB) return -1
return 0
}