import tsStatic from 'typescript';
import { Compiler } from './src/Compiler';
import { Transformers } from './src/Contracts';
/**
 * Symbols that can be used to get the global reference of the compiler
 */
export declare const symbols: {
    compiler: symbol;
    config: symbol;
};
/**
 * Returns helpers to along with cache when using a watcher.
 *
 * - You can check if the tsconfig file inside the cache is stale or not.
 * 	 If it is stale, then clear the entire cache
 *
 * - Clear cache for a given file path.
 * - Clear all cache
 */
export declare function getWatcherHelpers(appRoot: string, cachePath?: string): {
    clear(filePath?: string): void;
    isConfigStale: () => boolean;
};
/**
 * Load in-memory typescript compiler
 */
export declare function loadCompiler(appRoot: string, options: {
    compilerOptions: tsStatic.CompilerOptions;
    transformers?: Transformers;
}): Compiler;
/**
 * Register hook to compile typescript files in-memory. When
 * caching is enabled, the compiled files will be written
 * on the disk
 */
export declare function register(appRoot: string, opts?: {
    cache?: boolean;
    cachePath?: string;
    transformers?: Transformers;
}): void;