Webpack-cli安装成功后查看webpack -v报错案例详解

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.<anonymous> (/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 -v
v9.11.2

发现node版本 不是最新的，官网下载安装最新版本的node(lts)

node -v
v14.15.0

2. 升级npm

npm i -g npm

3. 查看webpack版本

webpack -v

webpack-cli 4.2.0

webpack 5.4.0

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