After Webpack-cli is successfully installed, check the webpack -v error case for details

question

1. Install webpack webpack-cli
2. Check the webpack version

solve

1. Check the node version
2. Upgrade npm
3. Check the webpack version

question

1. Install webpack webpack-cli

npm install -g webpack webpack-cli

insert image description here

2. Check the webpack version

webpack -v

Report an error

/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)

solve

1. Check the node version

node -v
v9.11.2

It is found that the node version is not the latest. Download and install the latest version of Node (LTS) from the official website

node -v
v14.15.0

2. Upgrade npm

npm i -g npm

3. Check the webpack version

webpack -v

webpack-cli 4.2.0

webpack 5.4.0

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