export default abstract class AssetPreCompiler {
    protected readonly targetDir: string;
    protected readonly assetType: string;
    protected readonly extension: string;
    private readonly outputToPublicDir;
    protected readonly assetPaths: string[];
    private watcher?;
    private afterPreCompileHandlers;
    private inputChangeHandler?;
    private hadError;
    /**
     * @param targetDir The directory to put pre-compiled assets into.
     * @param assetType This must be the assets sub-directory name of the asset type this pre-compiler will handle.
     * Example: ts
     * Example: views
     * @param extension The asset files extension.
     * @param outputToPublicDir should the assets be compiled into the publicly served directory?
     * @param additionalFallbackAssetPaths By order of priority, fallback asset directories.
     * Swaf provided assets and default ./assets directory are automatically added (don't add them yourself).
     */
    protected constructor(targetDir: string, assetType: string, extension: string, outputToPublicDir: boolean, ...additionalFallbackAssetPaths: string[]);
    getExtension(): string;
    isPublic(): boolean;
    getViewPaths(): string[];
    stop(): Promise<void>;
    abstract preCompile(canonicalName: string, alsoCompileDependents: boolean): Promise<void>;
    onPreCompile(afterPreCompileHandler: (watch: boolean) => Promise<void>): void;
    protected afterPreCompile(watch: boolean): Promise<void>;
    preCompileAll(watch: boolean): Promise<void>;
    watch(): Promise<void>;
    onNewFile(file: string): Promise<void>;
    onFileChange(file: string): Promise<void>;
    onFileRemove(file: string): Promise<void>;
    onInputChange(inputChangeHandler: (restart: boolean) => Promise<void>): void;
    protected toCanonicalName(file: string): string;
    protected resolveFileFromCanonicalName(canonicalName: string): Promise<string | null>;
    protected resolveFileFromCanonicalNameOrFail(canonicalName: string): Promise<string>;
}