为什么节点找不到模块？ （即使我不需要它）

Question

我一直在尝试使用require在同一文件夹中导入 js 文件，但我不断收到此错误：

Error: Cannot find module 'player'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Module.require (internal/modules/cjs/loader.js:692:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at Object.<anonymous> (/Users/shaham/Code/Typersion/server/items.js:1:14)
    at Module._compile (internal/modules/cjs/loader.js:778:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)

这是代码：

// server.js
var Player = require("./player")

//player.js
A bunch of functions...
module.exports = {
    functionNames...
}

文件架构：

server/
-server.js
-player.js

我什至在尝试运行node player.js时遇到此错误

我究竟做错了什么？

如果您想更深入地了解：这里是 repo： https://github.com/ShahamNoorani/Typersion （您将寻找refactoring分支）。

Answer 1

我已尝试启动您的代码，但出现错误消息：

user@user ~/git/Typersion (git)-[refactoring] % npm start

> typersion@1.0.0 start /home/user/git/Typersion
> node server/server.js

internal/modules/cjs/loader.js:1023
  throw err;
  ^

Error: Cannot find module 'player'
Require stack:
- /home/user/git/Typersion/server/items.js
- /home/user/git/Typersion/server/enemy.js
- /home/user/git/Typersion/server/server.js
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:1020:15)
    at Function.Module._load (internal/modules/cjs/loader.js:890:27)
    at Module.require (internal/modules/cjs/loader.js:1080:19)
    at require (internal/modules/cjs/helpers.js:72:18)
    at Object.<anonymous> (/home/user/git/Typersion/server/items.js:1:14)
    at Module._compile (internal/modules/cjs/loader.js:1176:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1196:10)
    at Module.load (internal/modules/cjs/loader.js:1040:32)
    at Function.Module._load (internal/modules/cjs/loader.js:929:14)
    at Module.require (internal/modules/cjs/loader.js:1080:19) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/home/user/git/Typersion/server/items.js',
    '/home/user/git/Typersion/server/enemy.js',
    '/home/user/git/Typersion/server/server.js'
  ]
}
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! typersion@1.0.0 start: `node server/server.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the typersion@1.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/user/.npm/_logs/2020-05-06T21_25_55_323Z-debug.log

它清楚地表明server/items.js文件中存在问题，甚至指定了 lineno 和 colno，所以基本上通过查看该文件，我可以告诉您忘记在您的 imprt 之前添加./ 。

TLDR

在server/items.js var Player = require("player")更改为var Player = require("./player")