ERROR in Module build failed (from ./node_modules/sass-loader/dist/cjs.js): SassError: Undefined mixin. angul;ar cli code example

Example 1: Firebase deploy error - Cannot find module 'firebase'

Figured out the solution. I hadn't installed the firebase module in the functions folder but had included it in the parent folder of functions. I went into functions and ran npm install --save firebase and the deploy was successful.

Example 2: Module Error (from ./node_modules/eslint-loader/dist/cjs.js):

npx prettier --write "**/*.{vue,js}"  /*linting folders in nuxt */