NativeScript 8.2 upgrade failed, throws build errors and npm installs fail

Environment
✔ Component nativescript has 8.2.3 version and is up to date.
✔ Component @nativescript/core has 8.2.1 version and is up to date.
✔ Component @nativescript/ios has 8.2.3 version and is up to date.
✔ Component @nativescript/android has 8.2.2 version and is up to date.

• iOS Runtime: 15.4
• NativeScript-Angular: 13.0.0
• Angular: 13.2.0

Describe the bug
After following this guide to upgrade to NativeScript 8.2.0 from 8.1.5, now when I run "npm install" it gives these warnings:

MacBook-Pro:UI justintoth$ npm install
npm WARN EBADENGINE Unsupported engine {
npm WARN EBADENGINE   package: '@eslint/eslintrc@1.2.1',
npm WARN EBADENGINE   required: { node: '^12.22.0 || ^14.17.0 || >=16.0.0' },
npm WARN EBADENGINE   current: { node: 'v14.16.0', npm: '8.3.1' }
npm WARN EBADENGINE }
npm WARN EBADENGINE Unsupported engine {
npm WARN EBADENGINE   package: '@typescript-eslint/eslint-plugin@5.17.0',
npm WARN EBADENGINE   required: { node: '^12.22.0 || ^14.17.0 || >=16.0.0' },
npm WARN EBADENGINE   current: { node: 'v14.16.0', npm: '8.3.1' }
npm WARN EBADENGINE }
npm WARN EBADENGINE ...

Worse, when trying to build it throws errors about "fs":

Module not found: Error: Can't resolve 'fs' in '/Users/justintoth/Dev/housters/UI/node_modules/source-map/lib'
 @ ./node_modules/source-map/lib/source-map-consumer.js 17:17-44
 @ ./node_modules/source-map/source-map.js 7:0-82
 @ ./node_modules/stacktrace-gps/stacktrace-gps.js
 @ ./node_modules/stacktrace-js/stacktrace.js
 @ ./node_modules/@nativescript/firebase-crashlytics/index.ios.js 14:0-39 73:12-32
 @ ./src/app/shared/services/analytics.service.ts 4:0-44
 @ ./src/app/components/public/signin/signin.component.ts 9:0-78 13:0-65 126:116-135 177:37-53
 @ ./src/app/app.module.ts 15:0-73
 @ ./src/main.ts 4:0-45 6:69-78

ERROR in ./node_modules/source-map/lib/read-wasm.js 21:15-30
Module not found: Error: Can't resolve 'path' in '/Users/justintoth/Dev/housters/UI/node_modules/source-map/lib'...

Here is the full build log: https://gist.github.com/justintoth/d8fde7b79e45df5f2f3310cf56d04edd

Start by reproducing npm install and the NativeScript build with the reported NativeScript, Angular, Node, and npm versions. Trace the import chain from src/app/shared/services/analytics.service.ts through @nativescript/firebase-crashlytics and inspect the linked full build log for the dependency failure. Done means the reported project installs and builds without the shown module-resolution errors.