/**
 * Wasm js-string builtins compatibility layer.
 *
 * Provides 4-tier fallback for instantiating MoonBit Wasm modules
 * that use `use-js-builtin-string: true`:
 *   - Tier 1: Native `{ builtins: ['js-string'] }` (Chrome 117+, FF 120+, Safari 17+)
 *   - Tier 1b: `{ builtins: ['js-string'] }` + manual '_' module as plain strings (Node.js 22+)
 *   - Tier 2: `{ importedStringConstants: '_' }` + manual wasm:js-string (Chrome 115-116)
 *   - Tier 3: Fully manual Global(externref) for '_' module (Chrome 111+)
 */
/**
 * Parse the Wasm binary's import section to extract all '_' module
 * string-constant field names dynamically.
 */
export declare function parseWasmStringConstants(buffer: ArrayBuffer): string[];
/**
 * Instantiate a Wasm module with three-tier js-string builtins fallback.
 *
 * @param bytes - Raw .wasm bytes
 * @param importObject - Base import object (pptx_ffi, moonbit:ffi)
 * @returns Instantiated Wasm source
 */
export declare function instantiateWasmWithFallback(bytes: ArrayBuffer, importObject: Record<string, Record<string, unknown>>, log?: {
    debug(...args: unknown[]): void;
    info(...args: unknown[]): void;
    warn(...args: unknown[]): void;
    error(...args: unknown[]): void;
}): Promise<WebAssembly.WebAssemblyInstantiatedSource>;
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