import type { ITtscParsedProjectConfig } from "../../../structures/internal/ITtscParsedProjectConfig";
import type { ITtscProjectLocatorOptions } from "../../../structures/internal/ITtscProjectLocatorOptions";
/**
 * Read and resolve the project config subset used by ttsc.
 *
 * Follows `extends` chains (including arrays) and merges compiler options with
 * later configs taking precedence. Path-typed options (`baseUrl`,
 * `declarationDir`, `outFile`, `rootDir`, `tsBuildInfoFile`) are resolved
 * relative to the config that declares them. `${configDir}` paths are resolved
 * against the final consuming config after the extends chain is merged. The
 * `outDir` is resolved to an absolute path. Plugins are inherited from the
 * nearest ancestor that declares them.
 */
export declare function readProjectConfig(opts?: ITtscProjectLocatorOptions): ITtscParsedProjectConfig;