export type OcctImportModuleConfig = {
    locateFile?: (path: string, prefix: string) => string;
};
export type OcctImportResult = {
    success: boolean;
    reason?: string;
};
export type OcctImportRuntime = {
    ReadStepFile: (content: Uint8Array, params: unknown) => OcctImportResult;
    ReadIgesFile: (content: Uint8Array, params: unknown) => OcctImportResult;
    ReadBrepFile: (content: Uint8Array, params: unknown) => OcctImportResult;
};
export type OcctImportFactory = (config?: OcctImportModuleConfig) => Promise<OcctImportRuntime>;
/**
 * Loads occt-import-js IIFE bundle once per script URL and returns the runtime factory.
 */
export declare function loadOcctImportOnce(scriptUrl: string): Promise<OcctImportFactory>;
export declare function buildOcctModuleConfig(wasmBaseUrl: string): OcctImportModuleConfig;
/**
 * Single cached occt-import-js wasm runtime per (scriptUrl, wasmBaseUrl). Shared by STEP, IGES, and BREP loaders.
 */
export declare function getOcctImportRuntime(scriptUrl: string, wasmBaseUrl: string): Promise<OcctImportRuntime>;