找不到模块'commander'

Question

[当我尝试运行摩卡测试时，我得到了

$ npm t

> [email protected] test /home/durrantm/Dropnot/code/js/mochaChai/digitalAlarmClock
>  mocha *.test.js

internal/modules/cjs/loader.js:979
  throw err;
  ^

Error: Cannot find module 'commander'
Require stack:
- /usr/lib/nodejs/mocha/bin/_mocha
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:976:15)
    at Function.Module._load (internal/modules/cjs/loader.js:859:27)
    at Module.require (internal/modules/cjs/loader.js:1036:19)
    at require (internal/modules/cjs/helpers.js:72:18)
    at Object.<anonymous> (/usr/lib/nodejs/mocha/bin/_mocha:10:17)
    at Module._compile (internal/modules/cjs/loader.js:1147:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1167:10)
    at Module.load (internal/modules/cjs/loader.js:996:32)
    at Function.Module._load (internal/modules/cjs/loader.js:896:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [ '/usr/lib/nodejs/mocha/bin/_mocha' ]
}
npm ERR! Test failed.  See above for more details.

如何解决？

Answer 1

这可能有几种不同的原因。

在这种情况下是因为未安装摩卡。

修复

npm install --save-dev mocha