$ npm install -g firebase-tools  
npm WARN deprecated har-validator@5.1.3: this library is no longer supported
npm WARN deprecated debug@4.1.1: Debug versions >=3.2.0 <3.2.7 || >=4 <4.3.1 have a low-severity ReDos regression when used in a Node.js environment. It is recommended you upgrade to 3.2.7 or 4.3.1. (https://github.com/visionmedia/debug/issues/797)
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 request@2.88.2: request has been deprecated, see https://github.com/request/request/issues/3142
(##################) ⠋ reify:googleapis: timing metavuln:calculate:security-advisory:firebase-functions:SyoPXa/u8BwcDRN/qldTotTJ9bZQ+J7uoM5Nw
added 706 packages, changed 1 package, and audited 708 packages in 2m
39 packages are looking for funding
  run `npm fund` for details
27 vulnerabilities (20 moderate, 7 high)
To address issues that do not require attention, run:
  npm audit fix
To address all issues (including breaking changes), run:
  npm audit fix --force
Run `npm audit` for details.

nodebrew install 16.4.2

nodebrew use 16.4.2

node -v
16.4.2

npm i -g firebase-tools

npm audi fix

npm list
└── firebase-tools@11.8.0