'；加密'；node.js模块：找不到包错误的包主文件

我已将加密模块（

npm install crypto

）安装到node.js项目中，但当我启动应用程序时，出现以下错误：

Error: Cannot find package main file for package: /opt/PropertyFinder/node_modules/crypto
    at DependecyGraph.resolveDependency (/opt/PropertyFinder/node_modules/react-native/packager/react-packager/src/DependencyResolver/haste/DependencyGraph/index.js:199:13)
    at /opt/PropertyFinder/node_modules/react-native/packager/react-packager/src/DependencyResolver/haste/DependencyGraph/index.js:117:22
    at Array.forEach (native)
    at collect (/opt/PropertyFinder/node_modules/react-native/packager/react-packager/src/DependencyResolver/haste/DependencyGraph/index.js:115:25)
    at /opt/PropertyFinder/node_modules/react-native/packager/react-packager/src/DependencyResolver/haste/DependencyGraph/index.js:130:9
    at Array.forEach (native)
    at collect (/opt/PropertyFinder/node_modules/react-native/packager/react-packager/src/DependencyResolver/haste/DependencyGraph/index.js:115:25)
    at /opt/PropertyFinder/node_modules/react-native/packager/react-packager/src/DependencyResolver/haste/DependencyGraph/index.js:130:9
    at Array.forEach (native)
    at collect (/opt/PropertyFinder/node_modules/react-native/packager/react-packager/src/DependencyResolver/haste/DependencyGraph/index.js:115:25)
    at /opt/PropertyFinder/node_modules/react-native/packager/react-packager/src/DependencyResolver/haste/DependencyGraph/index.js:130:9
    at Array.forEach (native)
    at collect (/opt/PropertyFinder/node_modules/react-native/packager/react-packager/src/DependencyResolver/haste/DependencyGraph/index.js:115:25)
    at /opt/PropertyFinder/node_modules/react-native/packager/react-packager/src/DependencyResolver/haste/DependencyGraph/index.js:130:9
    at Array.forEach (native)
    at collect (/opt/PropertyFinder/node_modules/react-native/packager/react-packager/src/DependencyResolver/haste/DependencyGraph/index.js:115:25)
[7:40:11 PM] <START> request:/index.ios.bundle

错误：找不到包的包主文件：/opt/PropertyFinder/node_modules/crypto
在DependencyGraph.resolveDependency（/opt/PropertyFinder/node_modules/react native/packager/react packager/src/DependencyResolver/haste/DependencyGraph/index.js:199:13）
at/opt/PropertyFinder/node_modules/react native/packager/react packager/src/dependencysolver/haste/DependencyGraph/index.js:117:22
at Array.forEach（本机）
收集时（/opt/PropertyFinder/node_modules/react native/packager/react packager/src/dependencysolver/haste/DependencyGraph/index.js:115:25）
at/opt/PropertyFinder/node_modules/react native/packager/react packager/src/dependencysolver/haste/DependencyGraph/index.js:130:9
at Array.forEach（本机）
收集时（/opt/PropertyFinder/node_modules/react native/packager/react packager/src/dependencysolver/haste/DependencyGraph/index.js:115:25）
at/opt/PropertyFinder/node_modules/react native/packager/react packager/src/dependencysolver/haste/DependencyGraph/index.js:130:9
at Array.forEach（本机）
收集时（/opt/PropertyFinder/node_modules/react native/packager/react packager/src/dependencysolver/haste/DependencyGraph/index.js:115:25）
at/opt/PropertyFinder/node_modules/react native/packager/react packager/src/dependencysolver/haste/DependencyGraph/index.js:130:9
at Array.forEach（本机）
收集时（/opt/PropertyFinder/node_modules/react native/packager/react packager/src/dependencysolver/haste/DependencyGraph/index.js:115:25）
at/opt/PropertyFinder/node_modules/react native/packager/react packager/src/dependencysolver/haste/DependencyGraph/index.js:130:9
at Array.forEach（本机）
收集时（/opt/PropertyFinder/node_modules/react native/packager/react packager/src/dependencysolver/haste/DependencyGraph/index.js:115:25）
[7:40:11 PM]请求：/index.ios.bundle

---

这是什么意思？我在哪里找到该软件包的主文件？

错误是项目没有包含入口脚本。它没有任何一种方法来允许在一般情况下需要包

var crypto = require('/opt/PropertyFinder/node_modules/crypto');

它只包括两个松散的模块，

md5.js

和

sha1.js

，您必须单独要求它们：

var md5 = require('/opt/PropertyFinder/node_modules/crypto/md5');
var sha1 = require('/opt/PropertyFinder/node_modules/crypto/sha1');

---

也许您打算使用Node.js的内置模块

如果是这样的话，您不需要通过

npm

来安装它，并且应该能够在代码中简单地

require（'crypto'）

（首先使用

npm uninstall crypto

删除“副本”。）