import type { ITtscProjectPluginConfig } from "ttsc";
/** Raw compiler-options overlay supplied by the caller as a plain JSON value. */
export type TtscUnpluginCompilerOptionsJson = Record<string, unknown>;
/** Options accepted by the `@ttsc/unplugin` bundler adapter. */
export interface TtscUnpluginOptions {
    /**
     * Project config used by the bundler adapter.
     *
     * Relative paths resolve from `process.cwd()`. When omitted, the nearest
     * `tsconfig.json` is discovered from the transformed file.
     */
    project?: string;
    /**
     * Compiler options overlaid on top of the selected project config.
     *
     * This can include `plugins`; `plugins` passed at the top level still wins as
     * the explicit plugin override.
     */
    compilerOptions?: TtscUnpluginCompilerOptionsJson;
    /**
     * `ttsc` plugin entries.
     *
     * `undefined` reads project plugins from `compilerOptions.plugins` and
     * directly installed package markers, `false` disables project plugins, and
     * an array overrides the project plugin list.
     */
    plugins?: readonly ITtscProjectPluginConfig[] | false;
}
/**
 * Fully-resolved plugin options with all defaults applied.
 *
 * Produced by {@link resolveOptions}; consumed internally by the transform
 * pipeline. Every field is present and normalised; callers should not construct
 * this type directly.
 */
export interface ResolvedTtscUnpluginOptions {
    /** Compiler-options overlay applied on top of the discovered tsconfig. */
    compilerOptions: TtscUnpluginCompilerOptionsJson;
    /**
     * Resolved plugin list; mirrors the semantics of
     * {@link TtscUnpluginOptions.plugins}.
     */
    plugins?: readonly ITtscProjectPluginConfig[] | false;
    /** Resolved path to the project tsconfig, or `undefined` to auto-discover. */
    project?: string;
}
/**
 * Normalise raw user-supplied options into {@link ResolvedTtscUnpluginOptions}.
 *
 * Merges provided values with defaults. The `plugins` field uses an explicit
 * `"plugins" in options` presence check rather than a falsy guard so that
 * `plugins: false` (disable all plugins) is preserved as-is.
 */
export declare function resolveOptions(options?: TtscUnpluginOptions): ResolvedTtscUnpluginOptions;