export interface OpenScadFS {
    mkdir(path: string): void;
    writeFile(path: string, data: string): void;
    readFile(path: string, opts: {
        encoding: 'utf8';
    }): string;
}
export interface OpenScadInstance {
    FS: OpenScadFS;
    callMain(args: string[]): number;
}
export interface OpenScadModule {
    createOpenSCAD(opts: {
        noInitialRun: boolean;
        print: (text: string) => void;
        printErr: (text: string) => void;
    }): Promise<{
        getInstance(): Promise<OpenScadInstance>;
    }>;
}
/** Loads (and caches) the openscad-wasm ES module from a CDN URL. */
export declare function loadOpenScadModule(wasmUrl?: string): Promise<OpenScadModule>;
export interface WorkerFile {
    fsPath: string;
    text: string;
}
export interface RunPassOptions {
    onLog?: (text: string) => void;
    args?: string[];
    outFile?: string;
}
/**
 * Runs one OpenSCAD render pass in a fresh WASM instance. Each pass needs
 * its own instance — openscad-wasm@0.0.4's Emscripten runtime exits after
 * the first callMain(), so a second callMain() on a reused instance throws.
 *
 * @param mod openscad-wasm module, from loadOpenScadModule().
 * @param files Written into the WASM virtual FS before running (parent
 *   directories created as needed).
 * @param entryFsPath Which written file to render.
 * @returns OFF text, or null if the pass produced no geometry, or failed.
 */
export declare function runOpenScadPass(mod: OpenScadModule, files: WorkerFile[], entryFsPath: string, opts?: RunPassOptions): Promise<string | null>;
/**
 * Forces a `.scad` file's default trailing call (matched by
 * `defaultCallPattern`, a regex source) to a different module invocation —
 * the one piece of project-specific logic multi-part/multi-color rendering
 * needs, generalized so it's data a project passes in rather than a custom
 * worker it writes. No match is a no-op (returns entryText unchanged).
 */
export declare function forceCall(entryText: string, defaultCallPattern: string, call: string): string;
export declare function fetchText(url: string): Promise<string>;
/** A `[+12.3s] message` logger tied to a Worker's postMessage. */
export declare function makeLogger(postMessage: (msg: {
    type: 'log';
    text: string;
}) => void): (text: string) => void;