32 lines
791 B
TypeScript
32 lines
791 B
TypeScript
 
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export class FetchError extends Error {
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status: number;
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info: unknown;
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constructor(message: string, status: number, info: unknown) {
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super(message);
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this.name = "FetchError";
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this.status = status;
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this.info = info;
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}
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}
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export async function fetcher<T>(url: string): Promise<T> {
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const res = await fetch(url);
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if (!res.ok) {
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let info: unknown = null;
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try {
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info = await res.json();
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} catch {
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try {
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info = await res.text();
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} catch {
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info = null;
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}
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}
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const msg =
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(info as { error?: string })?.error ||
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(typeof info === "string" ? info : null) ||
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`Request failed: ${res.status} ${res.statusText}`;
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throw new FetchError(msg, res.status, info);
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}
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return (await res.json()) as T;
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}
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