(value: string | undefined)
| 189 | } |
| 190 | |
| 191 | function string(value: string | undefined) { |
| 192 | if (typeof value === "string") return value; |
| 193 | if (typeof value === "number" || typeof value === "boolean") |
| 194 | return String(value); |
| 195 | return undefined; |
| 196 | } |