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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { StructuredError } from '@gemini-cli/core';
const RATE_LIMIT_ERROR_MESSAGE =
'\nPlease wait and try again later. To increase your limits, upgrade to a plan with higher limits, or use /auth to switch to using a paid API key from AI Studio at https://aistudio.google.com/apikey';
export interface ApiError {
error: {
code: number;
message: string;
status: string;
details: unknown[];
};
}
function isApiError(error: unknown): error is ApiError {
return (
typeof error === 'object' &&
error !== null &&
'error' in error &&
typeof (error as ApiError).error === 'object' &&
'message' in (error as ApiError).error
);
}
function isStructuredError(error: unknown): error is StructuredError {
return (
typeof error === 'object' &&
error !== null &&
'message' in error &&
typeof (error as StructuredError).message === 'string'
);
}
export function parseAndFormatApiError(error: unknown): string {
if (isStructuredError(error)) {
let text = `[API Error: ${error.message}]`;
if (error.status === 429) {
text += RATE_LIMIT_ERROR_MESSAGE;
}
return text;
}
// The error message might be a string containing a JSON object.
if (typeof error === 'string') {
const jsonStart = error.indexOf('{');
if (jsonStart === -1) {
return `[API Error: ${error}]`; // Not a JSON error, return as is.
}
const jsonString = error.substring(jsonStart);
try {
const parsedError = JSON.parse(jsonString) as unknown;
if (isApiError(parsedError)) {
let finalMessage = parsedError.error.message;
try {
// See if the message is a stringified JSON with another error
const nestedError = JSON.parse(finalMessage) as unknown;
if (isApiError(nestedError)) {
finalMessage = nestedError.error.message;
}
} catch (_e) {
// It's not a nested JSON error, so we just use the message as is.
}
let text = `[API Error: ${finalMessage} (Status: ${parsedError.error.status})]`;
if (parsedError.error.code === 429) {
text += RATE_LIMIT_ERROR_MESSAGE;
}
return text;
}
} catch (_e) {
// Not a valid JSON, fall through and return the original message.
}
return `[API Error: ${error}]`;
}
return '[API Error: An unknown error occurred.]';
}
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