docs: mention webpack-cli in migration docs

[wojtekmaj]

• This is a bugfix
• This is a feature
• This is a code refactor
• This is a test update
• This is a docs update
• This is a metadata update

For Bugs and Features; did you add new tests?

n/a

Motivation / Use-Case

Turns out, webpack-cli@<=4.4.0 crashes on webpack serve command when used with webpack-dev-server@4.0.0.
To prevent users from getting stuck or raising unnecessary bug reports, minimum compatible webpack-cli shall be mentioned in migration docs.

Breaking Changes

n/a

Additional Info

Crash on webpack-cli 4.2.0:

/node_modules/webpack-cli/lib/utils/arg-parser.js:59 options.reduce((parserInstance, option) => { ^ TypeError: Cannot read property 'reduce' of undefined at argParser (/node_modules/webpack-cli/lib/utils/arg-parser.js:59:13) at WebpackCLI.argParser (/node_modules/webpack-cli/lib/webpack-cli.js:63:16) at Object.parseArgs [as default] (/node_modules/@webpack-cli/serve/lib/parseArgs.js:26:37) at serve (/node_modules/@webpack-cli/serve/lib/index.js:46:63) at run (/node_modules/webpack-cli/lib/utils/resolve-command.js:33:12) at Command.<anonymous> (/node_modules/webpack-cli/lib/utils/arg-parser.js:34:58) at Command.listener [as _actionHandler] (/node_modules/webpack-cli/node_modules/commander/index.js:426:31) at Command._parseCommand (/node_modules/webpack-cli/node_modules/commander/index.js:1002:14) at Command._dispatchSubcommand (/node_modules/webpack-cli/node_modules/commander/index.js:953:18) at Command._parseCommand (/node_modules/webpack-cli/node_modules/commander/index.js:970:12) 

4.3.0 also produces an error:

[webpack-cli] Unable to load '@webpack-cli/serve' command [webpack-cli] TypeError: devServerFlags is not iterable at /node_modules/@webpack-cli/serve/lib/index.js:28:43 at WebpackCLI.makeCommand (/node_modules/webpack-cli/lib/webpack-cli.js:104:31) at ServeCommand.apply (/node_modules/@webpack-cli/serve/lib/index.js:10:19) at loadCommandByName (/node_modules/webpack-cli/lib/webpack-cli.js:626:35) at Command.<anonymous> (/node_modules/webpack-cli/lib/webpack-cli.js:1091:23) at Command.listener [as _actionHandler] (/node_modules/webpack-cli/node_modules/commander/index.js:922:31) at Command._parseCommand (/node_modules/webpack-cli/node_modules/commander/index.js:1503:14) at Command.parse (/node_modules/webpack-cli/node_modules/commander/index.js:1292:10) at Command.parseAsync (/node_modules/webpack-cli/node_modules/commander/index.js:1318:10) at WebpackCLI.run (/node_modules/webpack-cli/lib/webpack-cli.js:1123:28) 

[snitin315]

Thanks!

[codecov]

Codecov Report

Merging #3682 (237a15d) into master (d10bcc3) will not change coverage.
The diff coverage is n/a.

@@ Coverage Diff @@ ## master #3682 +/- ## ======================================= Coverage 93.55% 93.55% ======================================= Files 15 15 Lines 1318 1318 Branches 456 456 ======================================= Hits 1233 1233 Misses 78 78 Partials 7 7 

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[Ch2x]

webpack-cli@4.6.0 the same error，updated to 4.8.0 is worked

[wojtekmaj]

4.7.0 works as well. Huh.