Question

我已将加密模块（npm install crypto）安装到我的node.js项目中，但是当我启动应用程序时出现此错误：

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

这是什么意思？我在哪里找到该包的主文件？

Answer 1

也许您打算使用Node.js＆＃39;内置crypto模块。

如果是这样，您不需要通过npm进行安装，并且只能在代码中require('crypto')。

（首先使用npm uninstall crypto删除＆＃34;重复＆＃34;。）

Answer 2

该错误表示该项目未包含输入脚本。它通常没有index.js or another "main" script specified来允许包。

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

它只包含两个松散的模块，md5.js和sha1.js，您必须单独要求：

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

＆＃39;加密＆＃39; node.js模块：无法找到包主错误的包主文件

2 个答案: