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import { isPropertyAccessible } from './isPropertyAccessible'
/**
* Response status codes for responses that cannot have body.
* @see https://fetch.spec.whatwg.org/#statuses
*/
export const RESPONSE_STATUS_CODES_WITHOUT_BODY = new Set([
101, 103, 204, 205, 304,
])
/**
* Returns a boolean indicating whether the given response status
* code represents a response that cannot have a body.
*/
export function isResponseWithoutBody(status: number): boolean {
return RESPONSE_STATUS_CODES_WITHOUT_BODY.has(status)
}
/**
* Creates a generic 500 Unhandled Exception response.
*/
export function createServerErrorResponse(body: unknown): Response {
return new Response(
JSON.stringify(
body instanceof Error
? {
name: body.name,
message: body.message,
stack: body.stack,
}
: body
),
{
status: 500,
statusText: 'Unhandled Exception',
headers: {
'Content-Type': 'application/json',
},
}
)
}
/**
* Checks if the given response is a `Response.error()`.
*
* @note Some environments, like Miniflare (Cloudflare) do not
* implement the "Response.type" property and throw on its access.
* Safely check if we can access "type" on "Response" before continuing.
* @see https://github.com/mswjs/msw/issues/1834
*/
export function isResponseError(
response: Response
): response is Response & { type: 'error' } {
return isPropertyAccessible(response, 'type') && response.type === 'error'
}
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