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import type { InitFn, InitPromise, InitResult, WasmBaseInstance, WasmImports } from './types.ts';
/** * @name createWasmFn * @description * Create a WASM (or ASM.js) creator interface based on the supplied information. * * It will attempt to create a WASM interface first and if this fails or is not available in * the environment, will fallback to attempting to create an ASM.js interface. */export function createWasmFn <C extends WasmBaseInstance> (root: string, wasmBytes: null | Uint8Array, asmFn: null | ((wbg: WasmImports) => C)): InitFn<C> {  return async (wbg: WasmImports): InitPromise<C> => {    const result: InitResult<C> = {      error: null,      type: 'none',      wasm: null    };
    try {      if (!wasmBytes || !wasmBytes.length) {        throw new Error('No WebAssembly provided for initialization');      } else if (typeof WebAssembly !== 'object' || typeof WebAssembly.instantiate !== 'function') {        throw new Error('WebAssembly is not available in your environment');      }
      const source = await WebAssembly.instantiate(wasmBytes, { wbg });
      result.wasm = source.instance.exports as unknown as C;      result.type = 'wasm';    } catch (error) {      // if we have a valid supplied asm.js, return that      if (typeof asmFn === 'function') {        result.wasm = asmFn(wbg);        result.type = 'asm';      } else {        result.error = `FATAL: Unable to initialize @polkadot/wasm-${root}:: ${(error as Error).message}`;
        console.error(result.error);      }    }
    return result;  };}