"npm install bcrypt" failing with "Error: Cannot find module 'nan'"

Question

我正试图让我现有的 Angular 项目在一台新笔记本电脑上运行并启动它，运行ning 快把我逼疯了。这是我所做的：

git init 
git clone <project>
cd <project directory>
delete package-lock.json
npm install
npm install --global --production windows-build-tools
npm install bcrypt

倒数第二步是确保每个 https://github.com/kelektiv/node.bcrypt.js/wiki/Installation-Instructions 安装 bcrypt 依赖项（之前提醒过我）。但无论我尝试什么，我都会收到此 post 末尾列出的错误。

我已经检查了 node_modules 文件夹，'nan' 依赖项确实存在。即便如此，我尝试再次安装它（根据 node error cannot find module already installed 在本地和全局安装）并且安装正常。 'nan' 也列在 package.json 文件中。

我试过：
* 这个：Error: Cannot find module 'nan'
* 像这样卸载节点：How to completely remove node.js from Windows 并卸载我在计算机上可以找到的所有 python 安装（包括我认为可能有冲突的 v3 安装，但这似乎不是问题所在）。
* 除此之外，google 是空白的。
* 休息一会等神启也没用。

这里是错误：

node-pre-gyp WARN Using request for node-pre-gyp https download
node-pre-gyp WARN Tried to download(404): https://github.com/kelektiv/node.bcrypt.js/releases/download/v3.0.3/bcrypt_lib-v3.0.3-node-v64-win32-x64-unknown.tar.gz
node-pre-gyp WARN Pre-built binaries not found for bcrypt@3.0.3 and node@10.15.0 (node-v64 ABI, unknown) (falling back to source compile with node-gyp)
internal/modules/cjs/loader.js:583
    throw err;
    ^

Error: Cannot find module 'nan'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:581:15)
    at Function.Module._load (internal/modules/cjs/loader.js:507:25)
    at Module.require (internal/modules/cjs/loader.js:637:17)
    at require (internal/modules/cjs/helpers.js:22:18)
    at [eval]:1:1
    at Script.runInThisContext (vm.js:96:20)
    at Object.runInThisContext (vm.js:303:38)
    at Object.<anonymous> ([eval]-wrapper:6:22)
    at Module._compile (internal/modules/cjs/loader.js:689:30)
    at evalScript (internal/bootstrap/node.js:587:27)
gyp: Call to 'node -e "require('nan')"' returned exit status 1 while in binding.gyp. while trying to load binding.gyp
gyp ERR! configure error
gyp ERR! stack Error: `gyp` failed with exit code: 1
gyp ERR! stack     at ChildProcess.onCpExit (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:345:16)
gyp ERR! stack     at ChildProcess.emit (events.js:182:13)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:240:12)
gyp ERR! System Windows_NT 10.0.17134
gyp ERR! command "C:\Program Files\nodejs\node.exe" "C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\bin\node-gyp.js" "configure" "--fallback-to-build" "--module=C:\project\node_modules\bcrypt\lib\binding\bcrypt_lib.node" "--module_name=bcrypt_lib" "--module_path=C:\project\node_modules\bcrypt\lib\binding" "--napi_version=3" "--node_abi_napi=napi" "--napi_build_version=0" "--node_napi_label=node-v64" "--python=C:\Users\xxxxx\.windows-build-tools\python27\python.exe"

编辑 1

nan 包已 def 安装。当我运行 npm list nan 时，我得到：

aconcagua@0.0.0 C:\project
+-- @angular-devkit/build-angular@0.8.9
| `-- node-sass@4.11.0
|   `-- nan@2.12.1  deduped
+-- @angular/compiler-cli@6.1.10
| `-- chokidar@1.7.0
|   `-- UNMET OPTIONAL DEPENDENCY fsevents@1.2.6
|     `-- nan@2.12.1  deduped
`-- nan@2.12.1

我也试过 this 并添加了环境变量，但没有成功。

Answer 1

尝试手动安装 nan 到正确的子目录，即

cd $(npm root -g)/npm && npm install nan

Answer 2

我能解决这个问题的唯一方法是重置 windows (10) 并重新开始。新笔记本电脑，所以不会太痛苦。不过，找出问题所在并加以修复会更好...

"npm install bcrypt" failing with "Error: Cannot find module 'nan'"

"npm install bcrypt" failing with "Error: Cannot find module 'nan'"

nan

bcrypt

node.js

npm

npm-install

编辑 1