/** Returns the absolute path of the output directory. */
export declare function getOutputDirectory(): string;
/**
 * Runs `callback` before the compilation of *this build instance* of this
 * page — once per rebuild in dev mode, once per build in prod.
 */
export declare function preBuildHook(callback: () => Promise<void>): void;
/**
 * Runs `callback` after the compilation of *this build instance* of this
 * page — once per rebuild in dev mode, once per build in prod.
 */
export declare function postBuildHook(callback: () => Promise<void>): void;
/**
 * Runs `callback` exactly once per page.ts file for the lifetime of the
 * process, regardless of how many times the page is rebuilt.
 */
export declare function buildCallback(callback: () => Promise<void>): void;
/**
 * Schedules `input` to be copied to `target` (relative to the output
 * directory) as part of the post-build step for this page instance.
 */
export declare function publishFile(input: string, target: string): void;
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