Javascript Node.js：找不到模块“chai”
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Node.js: Cannot find module 'chai'
提问by aaa
I am trying to follow a first example from https://mochajs.org/
我正在尝试遵循https://mochajs.org/的第一个示例
Done this
做这个
$ npm install -g mocha
Got
得到了
C:\Windows\system32>npm install -g mocha
npm WARN deprecated [email protected]: Jade has been renamed to pug, please install th
e latest version of pug instead of jade
npm WARN deprecated [email protected]: graceful-fs version 3 and before will fai
l on newer node releases. Please update to graceful-fs@^4.0.0 as soon as possibl
e.
C:\Users\TestUser\AppData\Roaming\npm\_mocha -> C:\Users\TestUser\AppData\Roamin
g\npm\node_modules\mocha\bin\_mocha
C:\Users\TestUser\AppData\Roaming\npm\mocha -> C:\Users\TestUser\AppData\Roaming
\npm\node_modules\mocha\bin\mocha
[email protected] C:\Users\TestUser\AppData\Roaming\npm\node_modules\mocha
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected] ([email protected])
├── [email protected] ([email protected])
├── [email protected] ([email protected], [email protected])
└── [email protected] ([email protected], [email protected], [email protected])
Also installed chai (sorry, I originally forgot to mention it)
还装了chai（不好意思，原来忘记说了）
C:\Windows\system32>npm install -g chai
[email protected] C:\Users\TestUser\AppData\Roaming\npm\node_modules\chai
├── [email protected]
├── [email protected]
└── [email protected] ([email protected])
And here is the code
这是代码
var assert = require('chai').assert;
describe('Array', function() {
describe('#indexOf()', function () {
it('should return -1 when the value is not present', function () {
assert.equal(-1, [1,2,3].indexOf(5));
assert.equal(-1, [1,2,3].indexOf(0));
});
});
});
Keep getting
不断获得
Error: Cannot find module 'chai'
at Function.Module._resolveFilename (module.js:325:15)
at Function.Module._load (module.js:276:25)
at Module.require (module.js:353:17)
at require (internal/module.js:12:17)
at Object.<anonymous> (c:\git\develop\SendText\test\test2.js:1:76)
at Module._compile (module.js:409:26)
at Object.Module._extensions..js (module.js:416:10)
at Module.load (module.js:343:32)
at Function.Module._load (module.js:300:12)
at Function.Module.runMain (module.js:441:10)
What am I doing wrong?
我究竟做错了什么？
回答by Blackus
You have installed chaiglobally(with -goption), that's why requiredon't find it.
您已chai全局安装（带-g选项），这就是为什么require找不到它。
You need to install it locally(on your node_modulesdirectory), so that requirecan find it.
您需要在本地（在您的node_modules目录中）安装它，以便require可以找到它。
To do so, type:
为此，请键入：
npm install --save-dev chai
回答by Анатолий Смакаев
You need to install chailocally to require it.
您需要在chai本地安装才能使用它。
npm install chai
回答by Syam Pillai
You should install chai
你应该安装柴
$ npm install --save chai
$ npm install --save chai
回答by wei
$ npm install chai
[email protected] ../../../../../../node_modules/chai
├── [email protected]
├── [email protected]
└── [email protected] ([email protected])
-MacBook-Air:test $ mocha
Array
#indexOf()
? should return -1 when the value is not present
1 passing (9ms)
回答by Jose Luis Choque Chavez
You need to be sure that both installations are on the same folder because if the node_modules folder (created during mocha installation) is not on the same folder where you are installing chi, then the error: Cannot find module 'chai' appears.
您需要确保两个安装都在同一文件夹中，因为如果 node_modules 文件夹（在 mocha 安装期间创建）不在您安装 chi 的同一文件夹中，则会出现错误：找不到模块 'chai'。
npm install --global mocha
npm install --global mocha
npm install chi
npm 安装 chi
npm test (the tests were executed successfully)
npm test（测试成功执行）
回答by San Jaisy
npm install types/chai
npm 安装类型/柴
Install in the local drive
安装在本地驱动器中
