/**
 * Archetype detection primitives (B wave-3 file-size split).
 *
 * Extracted verbatim from `archetype-service.ts`: the backend /
 * monorepo / swagger candidate lists, the archetype-detection
 * thresholds (PRD-002b slice 2), and the async detectors that probe a
 * project root for those signals. Values are bytewise-identical to
 * the original literals. `archetype-service.ts` keeps the decision
 * functions (`decideArchetype`, `decideFrontendOnly`,
 * `decideIntegrationMode`) and the public `scanArchetype` entry; the
 * `frontendOnly` / `frontendOnlyReason` output contract is unchanged.
 */
export declare const BACKEND_DEP_NAMES: string[];
export declare const BACKEND_DIR_CANDIDATES: string[];
export declare const MONOREPO_CONFIG_FILES: string[];
/**
 * PRD-002b slice 2 — extract archetype-detection thresholds. Names
 * describe the meaning; values are bytewise-identical to the original
 * literals (signaled in commit message).
 */
export declare const MS_PER_DAY: number;
export declare const GREENFIELD_MAX_SRC_FILES = 20;
export declare const LEGACY_MIN_SRC_FILES = 20;
export declare const LOCKFILE_STALE_DAYS = 180;
export declare const GREENFIELD_MAX_LOCKFILE_DAYS = 30;
export declare const HIGH_CONFIDENCE_SIGNAL_COUNT = 3;
export declare const SWAGGER_CANDIDATE_PATHS: string[];
export declare function readPackageJsonDeps(projectRoot: string): Promise<{
    exists: boolean;
    deps: Record<string, string>;
}>;
export declare function detectBackendFrameworks(deps: Record<string, string>): Promise<string[]>;
/**
 * Manifests that only a service writes. Language-diverse on purpose: every
 * other probe in this file is Node-specific, and a repository whose backend is
 * Go / Java / Kotlin / Python / Ruby / PHP / Rust has no Node manifest at all,
 * so a Node-only evidence set reported it as `frontendOnly`.
 */
export declare const SERVICE_ONLY_MANIFEST_FILES: string[];
/**
 * Manifests a service MAY write and a library or CLI also writes. Counted as
 * backend evidence only when the file itself names a web framework — the
 * alternative is a boolean that fires on any Python or Rust directory, which
 * trades one wrong answer for another.
 */
export declare const CONDITIONAL_SERVICE_MANIFESTS: ReadonlyArray<readonly [string, RegExp]>;
/**
 * How deep from the project root a service is allowed to sit before its
 * manifest stops being counted. Two levels covers the layouts that were
 * invisible (`apps/gateway/package.json`, `services/checkout/requirements.txt`,
 * `web/` + `cmd/server`), and a deeper walk would read generated trees.
 */
export declare const SERVICE_MANIFEST_MAX_DEPTH = 2;
/**
 * Backend evidence that lives OUTSIDE the root manifest: a workspace package's
 * own `package.json`, and any non-Node service manifest.
 *
 * Returns `dir: evidence` strings (`apps/gateway: express`, `go.mod`,
 * `services/checkout: requirements.txt`) rather than a boolean, because the
 * whole defect this probe closes was a verdict that could not say what it saw.
 */
export declare function detectNestedServiceEvidence(projectRoot: string, backendDepNames?: readonly string[]): Promise<string[]>;
/**
 * Next.js server actions: `'use server'` in a file under `app/`. Route handlers
 * under `pages/api` / `app/api` were the only Next backend the detector knew
 * about, so a Next app that mutates data through actions — the documented
 * Next.js way — was reported as having no backend at all.
 */
export declare function detectNextServerActions(projectRoot: string): Promise<boolean>;
export declare function detectNextApiRoutes(projectRoot: string, hasNext: boolean): Promise<boolean>;
export declare function detectBackendDirs(projectRoot: string): Promise<string[]>;
export declare function detectSwagger(projectRoot: string): Promise<string[]>;
export declare function detectMonorepoConfigs(projectRoot: string): Promise<string[]>;
export declare function lockfileAgeDays(projectRoot: string): Promise<number | null>;