import { FileSystem, type Logger } from '@servicenow/sdk-build-core';
export type ProjectSourceFiles = {
    sourceFiles: string[];
};
/**
 * Reads the source-file inputs from `_project.json` for the app source artifact.
 *
 * @returns an empty list when `_project.json` is absent.
 * @throws {Error} if `_project.json` is present but cannot be read or parsed — a corrupt file
 *   fails hard rather than silently producing a build with no editable source, which would
 *   otherwise look identical to the legitimate case where no source files exist.
 */
export declare function readProjectJsonSourceFiles(fs: FileSystem, metadataDir: string): ProjectSourceFiles;
export type SourceArtifactFiles = {
    files: Map<string, Buffer>;
    totalSize: number;
    skippedFiles: string[];
};
/**
 * Assembles the set of files for the AIUX source artifact from _project.json.
 *
 * Reads `sourceFiles` (project-relative paths) from disk under `projectDir`.
 *
 * @returns the file map, total size, and skipped-file warnings — or `null` when there are
 *   no source files to attach at all.
 * @throws {Error} if the combined size would exceed `MAX_TOTAL_SIZE`, or if `_project.json` is
 *   present but cannot be read or parsed (see {@link readProjectJsonSourceFiles}).
 */
export declare function collectSourceArtifactFiles(fs: FileSystem, { metadataDir, projectDir, useNowPackIgnore, logger, }: {
    metadataDir: string;
    projectDir: string;
    useNowPackIgnore?: boolean;
    logger?: Logger;
}): Promise<SourceArtifactFiles | null>;