/**
 * Loader for the runtime.yaml provider configuration (issue #1136).
 *
 * Reads the two fixed paths (`~/.takt/runtime.yaml`, `<project>/.takt/runtime.yaml`) with
 * schema validation. Directories are passed explicitly from above — there is no implicit
 * homedir/cwd fallback and no `runtime_file` indirection. When both files exist, project
 * wins: same-name profiles are replaced wholesale (no field-level merge, per order.md:37),
 * disjoint profiles are retained, and the other sections take the project value when present.
 * Named assignments and directory mappings are resolved after the two layers are merged.
 */
import { type RuntimeProviderFile } from './schema.js';
/** Load and validate a single runtime.yaml. Returns undefined when the file is absent or empty. */
export declare function loadRuntimeProviderFileAt(filePath: string): RuntimeProviderFile | undefined;
export interface ResolveRuntimeProviderInput {
    globalConfigDir: string;
    projectConfigDir: string;
}
export type RuntimeProviderProfileOrigin = 'global' | 'project';
export interface ResolvedRuntimeProviderFileWithOrigins {
    readonly runtimeFile: RuntimeProviderFile | undefined;
    readonly profileOrigins: ReadonlyMap<string, RuntimeProviderProfileOrigin>;
}
/** Resolve the effective file together with the layer that contributed each profile. */
export declare function resolveRuntimeProviderFileWithOrigins(input: ResolveRuntimeProviderInput): ResolvedRuntimeProviderFileWithOrigins;
/** Resolve the effective runtime.yaml from the global and project layers (project wins). */
export declare function resolveRuntimeProviderFile(input: ResolveRuntimeProviderInput): RuntimeProviderFile | undefined;
//# sourceMappingURL=loader.d.ts.map