导入在代码中有效，但在`yarn start`中不起作用

Question

在 MS Code 中，此导入不会突出显示为错误：

import { keccak256 } from "ethers/lib/utils";

但是当我尝试

yarn start

时，它会产生错误。

[1] ✘ [ERROR] Could not resolve "ethers/lib/utils"
[1] 
[1]     ../util/eth.ts:1:26:
[1]       1 │ import { keccak256 } from "ethers/lib/utils";
[1]         ╵                           ~~~~~~~~~~~~~~~~~~
[1] 
[1]   The path "./lib/utils" is not exported by package "ethers":
[1] 
[1]     ../node_modules/ethers/package.json:67:13:
[1]       67 │   "exports": {
[1]          ╵              ^
[1] 
[1]   You can mark the path "ethers/lib/utils" as external to exclude it from the bundle, which will remove this error and leave the unresolved path in the bundle.

我不明白

package.json

中的导入意味着什么以及如何将其与代码一起使用，这样

code

和

yarn start

都会满意。

Answer 1

确保您安装了 Ethers 库的最新版本。