How to use the @webassemblyjs/ast.moduleExportDescr function in @webassemblyjs/ast

const funcResults = [];

	// Code section
	const funcSignature = t.signature(funcParams, funcResults);
	const func = t.func(initFuncId, funcSignature, funcBody);

	// Type section
	const functype = t.typeInstruction(undefined, funcSignature);

	// Func section
	const funcindex = t.indexInFuncSection(nextTypeIndex);

	// Export section
	const moduleExport = t.moduleExport(
		initFuncId.value,
		t.moduleExportDescr("Func", nextFuncIndex)
	);

	return addWithAST(ast, bin, [func, moduleExport, funcindex, functype]);
};

const funcResults = [];

	// Code section
	const funcSignature = t.signature(funcParams, funcResults);
	const func = t.func(initFuncId, funcSignature, funcBody);

	// Type section
	const functype = t.typeInstruction(undefined, funcSignature);

	// Func section
	const funcindex = t.indexInFuncSection(nextTypeIndex);

	// Export section
	const moduleExport = t.moduleExport(
		initFuncId.value,
		t.moduleExportDescr("Func", nextFuncIndex)
	);

	return addWithAST(ast, bin, [func, moduleExport, funcindex, functype]);
};

const funcResults = [];

	// Code section
	const funcSignature = t.signature(funcParams, funcResults);
	const func = t.func(initFuncId, funcSignature, funcBody);

	// Type section
	const functype = t.typeInstruction(undefined, funcSignature);

	// Func section
	const funcindex = t.indexInFuncSection(nextTypeIndex);

	// Export section
	const moduleExport = t.moduleExport(
		initFuncId.value,
		t.moduleExportDescr("Func", nextFuncIndex)
	);

	return addWithAST(ast, bin, [func, moduleExport, funcindex, functype]);
};

(moduleExport: DecodedElementInExportSection) => {
      /**
       * If the export has no id, we won't be able to call it from the outside
       * so we can omit it
       */
      if (moduleExport.id != null) {
        moduleFields.push(
          t.withLoc(
            t.moduleExport(
              moduleExport.name,
              t.moduleExportDescr(moduleExport.type, moduleExport.id)
            ),
            moduleExport.endLoc,
            moduleExport.startLoc
          )
        );
      }
    }
  );

eatToken();
          index = parseExportIndex(token);
        }

        eatToken();
      }

      if (type === "") {
        throw new Error("Unknown export type");
      }

      if (index === undefined) {
        throw new Error("Exported function must have a name");
      }

      var node = t.moduleExportDescr(type, index);
      var endLoc = getEndLoc();
      eatTokenOfType(tokens.closeParen);
      return t.withLoc(node, endLoc, startLoc);
    }

eatToken();
          index = parseExportIndex(token);
        }

        eatToken();
      }

      if (type === "") {
        throw new Error("Unknown export type");
      }

      if (index === undefined) {
        throw new Error("Exported function must have a name");
      }

      const node = t.moduleExportDescr(type, index);
      const endLoc = getEndLoc();

      eatTokenOfType(tokens.closeParen);

      return t.withLoc(node, endLoc, startLoc);
    }

eatToken();
          index = parseExportIndex(token);
        }

        eatToken();
      }

      if (type === "") {
        throw new Error("Unknown export type");
      }

      if (index === undefined) {
        throw new Error("Exported function must have a name");
      }

      var node = t.moduleExportDescr(type, index);
      var endLoc = getEndLoc();
      eatTokenOfType(tokens.closeParen);
      return t.withLoc(node, endLoc, startLoc);
    }