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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
interface GaxiosError {
response?: {
data?: unknown;
};
}
export function isNodeError(error: unknown): error is NodeJS.ErrnoException {
return error instanceof Error && 'code' in error;
}
export function getErrorMessage(error: unknown): string {
if (error instanceof Error) {
return error.message;
}
try {
return String(error);
} catch {
return 'Failed to get error details';
}
}
export class ForbiddenError extends Error {}
export class UnauthorizedError extends Error {}
export class BadRequestError extends Error {}
interface ResponseData {
error?: {
code?: number;
message?: string;
};
}
export function toFriendlyError(error: unknown): unknown {
if (error && typeof error === 'object' && 'response' in error) {
const gaxiosError = error as GaxiosError;
const data = parseResponseData(gaxiosError);
if (data.error && data.error.message && data.error.code) {
switch (data.error.code) {
case 400:
return new BadRequestError(data.error.message);
case 401:
return new UnauthorizedError(data.error.message);
case 403:
// It's import to pass the message here since it might
// explain the cause like "the cloud project you're
// using doesn't have code assist enabled".
return new ForbiddenError(data.error.message);
default:
}
}
}
return error;
}
function parseResponseData(error: GaxiosError): ResponseData {
// Inexplicably, Gaxios sometimes doesn't JSONify the response data.
if (typeof error.response?.data === 'string') {
return JSON.parse(error.response?.data) as ResponseData;
}
return error.response?.data as ResponseData;
}
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