Unable to install due to package dependencies

[tricoos]

Bug report

Current behavior

npm install results in:

npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR!
npm ERR! While resolving: [email protected]
npm ERR! Found: [email protected]
npm ERR! node_modules/webpack
npm ERR!   dev webpack@"^5.37.1" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer webpack@"^3.1.0" from [email protected]
npm ERR! node_modules/extract-text-webpack-plugin
npm ERR!   dev extract-text-webpack-plugin@"^3.0.2" from the root project
npm ERR!
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
npm ERR!

If I install it with legacy peer dependencies I get this:

$ npm install --legacy-peer-deps
npm WARN deprecated [email protected]: flatten is deprecated in favor of utility frameworks such as lodash.
npm WARN deprecated [email protected]: Please see https://github.com/lydell/urix#deprecated
npm WARN deprecated [email protected]: this library is no longer supported
npm WARN deprecated [email protected]: https://github.com/lydell/resolve-url#deprecated
npm WARN deprecated @stylelint/[email protected]: Use the original unforked package instead: postcss-markdown
npm WARN deprecated [email protected]: Chokidar 2 will break on node v14+. Upgrade to chokidar 3 with 15x less dependencies.
npm WARN deprecated [email protected]: The querystring API is considered Legacy. new code should use the URLSearchParams API instead.
npm WARN deprecated [email protected]: Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.
npm WARN deprecated [email protected]: Deprecated. Please use https://github.com/webpack-contrib/mini-css-extract-plugin
npm WARN deprecated [email protected]: request has been deprecated, see https://github.com/request/request/issues/3142
npm WARN deprecated [email protected]: This SVGO version is no longer supported. Upgrade to v2.x.x.
npm WARN deprecated [email protected]: This version of tar is no longer supported, and will not receive security updates. Please upgrade asap.
npm WARN deprecated [email protected]: jvectormap is not maintened since Aug 2015. You can use jvectormap-next or jqvmap instead.
npm WARN deprecated [email protected]: core-js@<3.3 is no longer maintained and not recommended for usage due to the number of issues. Because of the V8 engine whims, feature detection in old core-js versions could cause a slowdown up to 100x even if nothing is polyfil
led. Please, upgrade your dependencies to the actual version of core-js.

added 1779 packages, and audited 1780 packages in 4m

152 packages are looking for funding
  run `npm fund` for details

50 vulnerabilities (24 moderate, 26 high)

Just reading through this is shocking.

Expected behavior

npm install installs without issues and no high vulnerabilities.

Environment

Platform: Windows Browser: n/a

For building issues: Node: 14.17.5
NPM: 7.5.6