fucheng
34 lines
1.3 KiB
TypeScript
34 lines
1.3 KiB
TypeScript
/** Browser / WebView fetch failures are usually TypeError with an opaque message. */
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export const AI_NETWORK_ERROR_CODE = "AI_UNREACHABLE";
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const NETWORK_FETCH_HINTS = [
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"failed to fetch",
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"networkerror",
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"network request failed",
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"load failed",
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"internet connection appears to be offline",
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];
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export function isLikelyNetworkFetchError(error: unknown): boolean {
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const name = error instanceof Error ? error.name : "";
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const msg = (error instanceof Error ? error.message : String(error ?? "")).toLowerCase();
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if (msg === AI_NETWORK_ERROR_CODE.toLowerCase()) return true;
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if (NETWORK_FETCH_HINTS.some((hint) => msg.includes(hint))) return true;
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// Some WebViews surface a bare TypeError when fetch cannot complete.
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return name === "TypeError" && !msg;
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}
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export function formatNetworkAwareMessage(
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template: string,
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error: unknown,
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networkCopy: string,
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): string {
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const raw = error instanceof Error ? error.message : String(error ?? "");
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const message = isLikelyNetworkFetchError(error) || isLikelyNetworkFetchError(raw) ? networkCopy : raw;
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if (template.includes("{message}")) {
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return template.split("{message}").join(String(message));
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}
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return isLikelyNetworkFetchError(error) || isLikelyNetworkFetchError(raw) ? networkCopy : template;
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}
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