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Docz requires a Webpack install

See original GitHub issue

Bug Report

We didn’t have Webpack installed, so Docz threw an error when running docz dev:

Error: Cannot find module 'webpack/schemas/WebpackOptions.json'

npm i -D webpack fixed the error immediately.

To Reproduce

Create a project without Webpack installed
Install Docz npm i -D docz
Run npx docz dev

❯ npm run docz:dev

> test@ docz:dev /Users/oliver.phillips/Code/mosaic-project/mosaic
> docz dev

module.js:549
    throw err;
    ^

Error: Cannot find module 'webpack/schemas/WebpackOptions.json'
    at Function.Module._resolveFilename (module.js:547:15)
    at Function.Module._load (module.js:474:25)
    at Module.require (module.js:596:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/Users/oliver.phillips/Code/mosaic-project/mosaic/node_modules/@webpack-contrib/config-loader/lib/index.js:4:23)
    at Module._compile (module.js:652:30)
    at Object.Module._extensions..js (module.js:663:10)
    at Module.load (module.js:565:32)
    at tryModuleLoad (module.js:505:12)
    at Function.Module._load (module.js:497:3)
    at Module.require (module.js:596:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/Users/oliver.phillips/Code/mosaic-project/mosaic/node_modules/webpack-serve/lib/config.js:3:16)
    at Module._compile (module.js:652:30)
    at Object.Module._extensions..js (module.js:663:10)
    at Module.load (module.js:565:32)
npm ERR! code ELIFECYCLE

Expected behavior

Docz should either have Webpack as a dependency or at least warn that a peerDependency is missing.

Environment