/** Internal helpers shared by embedded WASM backends. */
export declare function decodeBase64Bytes(value: string): Uint8Array<ArrayBuffer>;
export declare function tryGrowWasmMemory(memory: WebAssembly.Memory, bytes: number): boolean;
export declare function growWasmMemory(memory: WebAssembly.Memory, bytes: number): void;
export declare function alignWasm4(value: number): number;
export declare function alignWasm8(value: number): number;
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