How to use the @webassemblyjs/helper-wasm-bytecode.magicModuleHeader function in @webassemblyjs/helper-wasm-bytecode

function parseModuleHeader() {
    if (isEOF() === true || offset + 4 > buf.length) {
      throw new Error("unexpected end");
    }

    var header = readBytes(4);

    if (byteArrayEq(constants.magicModuleHeader, header) === false) {
      throw new CompileError("magic header not detected");
    }

    dump(header, "wasm magic header");
    eatBytes(4);
  }

export function encodeHeader() {
  return constants.magicModuleHeader;
}
export function encodeU32(v) {

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } }

function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }

var t = require("@webassemblyjs/ast");

var _require = require("@webassemblyjs/helper-wasm-bytecode"),
    importTypes = _require.importTypes,
    symbolsByByte = _require.symbolsByByte,
    blockTypes = _require.blockTypes,
    tableTypes = _require.tableTypes,
    globalTypes = _require.globalTypes,
    exportTypes = _require.exportTypes,
    types = _require.types,
    magicModuleHeader = _require.magicModuleHeader,
    valtypes = _require.valtypes,
    moduleVersion = _require.moduleVersion,
    sections = _require.sections;
/**
 * FIXME(sven): we can't do that because number > 2**53 will fail here
 * because they cannot be represented in js.
 */


function badI32ToI64Conversion(value) {
  return {
    high: value < 0 ? -1 : 0,
    low: value >>> 0
  };
}

export function encodeHeader() {
  return constants.magicModuleHeader;
}
export function encodeU32(v) {

function parseModuleHeader() {
    if (isEOF() === true || offset + 4 > buf.length) {
      throw new Error("unexpected end");
    }

    var header = readBytes(4);

    if (byteArrayEq(constants.magicModuleHeader, header) === false) {
      throw new CompileError("magic header not detected");
    }

    dump(header, "wasm magic header");
    eatBytes(4);
  }

function parseModuleHeader() {
    if (isEOF() === true || offset + 4 > buf.length) {
      throw new Error("unexpected end");
    }

    const header = readBytes(4);

    if (byteArrayEq(constants.magicModuleHeader, header) === false) {
      throw new CompileError("magic header not detected");
    }

    dump(header, "wasm magic header");

    eatBytes(4);
  }

function parseModuleHeader() {
    if (isEOF() === true || offset + 4 > buf.length) {
      throw new Error("unexpected end");
    }

    var header = readBytes(4);

    if (byteArrayEq(constants.magicModuleHeader, header) === false) {
      throw new CompileError("magic header not detected");
    }

    dump(header, "wasm magic header");
    eatBytes(4);
  }

export function encodeHeader(): Array {
  return constants.magicModuleHeader;
}