parseArgs(argv: string[]): Result<UpgradeOptions, Failure.Of<InvalidArgument>>
Parses qunitx upgrade's arguments. A bare 0.34.2 (or v0.34.2) pins the version, the same
as --version=0.34.2.
import * as Upgrade from './index.ts'; const options = Upgrade.parseArgs(['0.34.2', '--check']); Upgrade.InvalidArgument.is(options) ? null : options.version; // '0.34.2'