export type AddQueueHandlerOutcome = {
    status: 'inserted';
    source: string;
} | {
    status: 'already-present';
} | {
    status: 'no-default-export';
} | {
    status: 'no-closing-brace';
};
/**
 * Insert `method` (a full class-method source snippet, e.g.
 * `"  async queue(...) {...},"`) into the default-exported object in `source`.
 *
 * - `already-present`: `source` already declares an `async queue(` handler — a
 *   Worker has a single queue() handler shared by all queue bindings, so the
 *   caller should leave the file untouched.
 * - `source.length === 0`: no entrypoint yet — a brand new one is returned.
 * - `no-default-export`: `source` has no `export default { ... }` object to
 *   insert into (e.g. a class-style entrypoint).
 * - `no-closing-brace`: an `export default {` was found but its matching `}`
 *   could not be located (malformed source).
 */
export declare function addQueueHandler(source: string, method: string): AddQueueHandlerOutcome;