Webpack-cli安装成功后查看webpack -v报错怎么办

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问题

1. 安装webpack webpack-cli

npm install -g webpack webpack-cli

2. 查看webpack 版本

webpack -v

报错

/usr/local/lib/node_modules/webpack/lib/cli.js:66                        .replace(                        ^SyntaxError: Invalid regular expression: /(\p{Uppercase_Letter}+|\p{Lowercase_Letter}|\d)(\p{Uppercase_Letter}+)/: Invalid escape    at pathToArgumentName (/usr/local/lib/node_modules/webpack/lib/cli.js:66:4)    at addFlag (/usr/local/lib/node_modules/webpack/lib/cli.js:170:16)    at traverse (/usr/local/lib/node_modules/webpack/lib/cli.js:243:21)    at traverse (/usr/local/lib/node_modules/webpack/lib/cli.js:299:23)    at traverse (/usr/local/lib/node_modules/webpack/lib/cli.js:248:24)    at Object.getArguments (/usr/local/lib/node_modules/webpack/lib/cli.js:308:2)    at Object. (/usr/local/lib/node_modules/webpack-cli/lib/utils/cli-flags.js:245:30)    at Module._compile (/usr/local/lib/node_modules/webpack-cli/node_modules/v8-compile-cache/v8-compile-cache.js:192:30)    at Object.Module._extensions..js (internal/modules/cjs/loader.js:665:10)    at Module.load (internal/modules/cjs/loader.js:566:32)

解决

1. 查看node版本

node -vv9.11.2

发现node版本 不是最新的，官网下载安装最新版本的Node(LTS)

node -vv14.15.0

2. 升级npm

npm i -g npm

3. 查看webpack版本

webpack -vwebpack-cli 4.2.0webpack 5.4.0

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