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| export async function fetchJSON<T>( | |
| url: string, | |
| options?: { | |
| fetch?: typeof window.fetch; | |
| allowNull?: boolean; | |
| } | |
| ): Promise<T> { | |
| const response = await (options?.fetch ?? fetch)(url); | |
| if (!response.ok) { | |
| throw new Error(`Failed to fetch ${url}: ${response.status} ${response.statusText}`); | |
| } | |
| // Handle empty responses (which parse to null) | |
| const text = await response.text(); | |
| if (!text || text.trim() === "") { | |
| if (options?.allowNull) { | |
| return null as T; | |
| } | |
| throw new Error(`Received empty response from ${url} but allowNull is not set to true`); | |
| } | |
| return JSON.parse(text); | |
| } | |