Build from Source numerious issues generating npm WARN deprecated

[keefer223]

I'm in the process of trying to compile new electron GUI for Scala, Scala Electron Wallet 2.0.0 "V7 Panthera", from the source code. following the readme.md instruction's, the first stumbling block was generated by "npm install -g quasar-cli": a good section of the code has been depreciated or not supported.

keefer@Yiimp:~$ npm install -g quasar-cli
npm WARN deprecated @babel/preset-stage-2@7.0.0-beta.54: 👋 We've deprecated any official stage presets in favor of users explicitly opt-ing into the proposals they want to use versus any perceived convenience. You can also check babel/babel#7770 for more information.
npm WARN deprecated chokidar@2.0.4: Chokidar 2 will break on node v14+. Upgrade to chokidar 3 with 15x less dependencies.
npm WARN deprecated html-webpack-plugin@3.2.0: 3.x is no longer supported
npm WARN deprecated @babel/preset-stage-3@7.0.0-beta.54: 👋 We've deprecated any official stage presets in favor of users explicitly opt-ing into the proposals they want to use versus any perceived convenience. You can also check babel/babel#7770 for more information.
npm WARN deprecated core-js@2.6.12: 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3.3 is no longer maintained and not recommended for usage due to the number of issues.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 polyfilled. Please, upgrade your dependencies to the actual version of core-js.
npm WARN deprecated fsevents@1.2.13: fsevents 1 will break on node v14+ and could be using insecure binaries. Upgrade to fsevents 2.
npm WARN deprecated urix@0.1.0: Please see https://github.com/lydell/urix#deprecated
npm WARN deprecated resolve-url@0.2.1: https://github.com/lydell/resolve-url#deprecated
npm WARN deprecated svgo@1.3.2: This SVGO version is no longer supported. Upgrade to v2.x.x.
npm WARN deprecated uglify-es@3.3.9: support for ECMAScript is superseded by uglify-js as of v3.13.0
npm WARN deprecated querystring@0.2.0: The querystring API is considered Legacy. new code should use the URLSearchParams API instead.
npm WARN deprecated chokidar@2.1.8: Chokidar 2 will break on node v14+. Upgrade to chokidar 3 with 15x less dependencies.
npm WARN deprecated uuid@3.4.0: 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 joi@11.4.0: This version has been deprecated in accordance with the hapi support policy (hapi.im/support). Please upgrade to the latest version to get the best features, bug fixes, and security patches. If you are unable to upgrade at this time, paid support is available for older versions (hapi.im/commercial).
npm WARN deprecated hoek@4.2.1: This version has been deprecated in accordance with the hapi support policy (hapi.im/support). Please upgrade to the latest version to get the best features, bug fixes, and security patches. If you are unable to upgrade at this time, paid support is available for older versions (hapi.im/commercial).
npm WARN deprecated topo@2.0.2: This version has been deprecated in accordance with the hapi support policy (hapi.im/support). Please upgrade to the latest version to get the best features, bug fixes, and security patches. If you are unable to upgrade at this time, paid support is available for older versions (hapi.im/commercial).
/home/keefer/.config/nvm/versions/node/v11.9.0/bin/quasar -> /home/keefer/.config/nvm/versions/node/v11.9.0/lib/node_modules/quasar-cli/bin/quasar

core-js@2.6.12 postinstall /home/keefer/.config/nvm/versions/node/v11.9.0/lib/node_modules/quasar-cli/node_modules/core-js
node -e "try{require('./postinstall')}catch(e){}"

Thank you for using core-js ( https://github.com/zloirock/core-js ) for polyfilling JavaScript standard library!

The project needs your help! Please consider supporting of core-js on Open Collective or Patreon:

https://opencollective.com/core-js
https://www.patreon.com/zloirock

Also, the author of core-js ( https://github.com/zloirock ) is looking for a good job -)

ejs@2.7.4 postinstall /home/keefer/.config/nvm/versions/node/v11.9.0/lib/node_modules/quasar-cli/node_modules/ejs
node ./postinstall.js

Thank you for installing EJS: built with the Jake JavaScript build tool (https://jakejs.com/)

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.2.2 (node_modules/quasar-cli/node_modules/chokidar/node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.13: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@~2.3.2 (node_modules/quasar-cli/node_modules/watchpack/node_modules/chokidar/node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@2.3.2: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})
npm WARN ajv-keywords@3.5.2 requires a peer of ajv@^6.9.1 but none is installed. You must install peer dependencies yourself.

• quasar-cli@0.17.26
  added 1106 packages from 559 contributors in 769.442s

It appears that the use of quasar-cli needs some updating.