npm i node-gyp
npm i grpc
npm install grpc --build-from-source
npm i node-pre-gyp
npm i node-sass
npm i typescript
npm i encoding
npm install firebase @angular/fire --save
npm i node-gyp
npm i grpc
npm install grpc --build-from-source
npm i node-pre-gyp
npm i node-sass
npm i typescript
npm i encoding
npm install firebase @angular/fire --save