npm安装错误包含在开发和生产依赖项中

Question

12915 warn whisper-chat-example@1.0.0 No repository field.
12916 warn The package web3 is included as both a dev and production dependency.
12917 verbose type ProcessTerminatedError
12918 verbose stack ProcessTerminatedError: cancel after 1 retries!
12918 verbose stack     at Farm.<anonymous> (/usr/local/lib/node_modules/npm/node_modules/worker-farm/lib/farm.js:87:25)
12918 verbose stack     at Array.forEach (<anonymous>)
12918 verbose stack     at Farm.<anonymous> (/usr/local/lib/node_modules/npm/node_modules/worker-farm/lib/farm.js:81:36)
12918 verbose stack     at ontimeout (timers.js:427:11)
12918 verbose stack     at tryOnTimeout (timers.js:289:5)
12918 verbose stack     at listOnTimeout (timers.js:252:5)
12918 verbose stack     at Timer.processTimers (timers.js:212:10)
12919 verbose cwd /Users/ishansrivastava/Desktop/blocks/Decentralized_Chat
12920 verbose Darwin 18.0.0
12921 verbose argv "/usr/local/bin/node" "/usr/local/bin/npm" "install"
12922 verbose node v10.1.0
12923 verbose npm  v6.0.1
12924 error cancel after 1 retries!
12925 verbose exit [ 1, true ]

我不明白怎么了。我该如何解决此问题？它是否与作为开发和生产依赖项包含的行有关？？

运行npm run dev时，我得到：

sh: cross-env: command not found
npm ERR! file sh
npm ERR! code ELIFECYCLE
npm ERR! errno ENOENT
npm ERR! syscall spawn
npm ERR! whisper-chat-example@1.0.0 dev: `cross-env NODE_ENV=development webpack-dev-server --hot`
npm ERR! spawn ENOENT
npm ERR!
npm ERR! Failed at the whisper-chat-example@1.0.0 dev script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

Answer 1

正如错误所说，您在开发和生产依赖关系中都定义了包。

如果您只需要在开发中使用包，则必须仅在开发依赖项中定义它。如果您在生产中需要in，请将其从devDependencies中删除，并在dependencies ONLY中定义它。

关于cross-env，您需要将其作为全局包与npm一起安装cross-env-g。这样，命令将被识别，并且不会返回错误。