(value: unknown)
| 13 | typeof value === 'string' ? value : undefined |
| 14 | |
| 15 | const getStringArray = (value: unknown): string[] | undefined => |
| 16 | Array.isArray(value) |
| 17 | ? value.filter((item): item is string => typeof item === 'string') |
| 18 | : undefined |
| 19 | |
| 20 | const getNumber = (value: unknown, fallback = 0): number => |
| 21 | typeof value === 'number' ? value : fallback |