$ gh-pages -d build 'gh-pages' is not recognized as an internal or external command, operable program or batch file. error Command failed with exit code 1. code example

Example: 'gh-pages' is not recognized as an internal or external command

npm install gh-pages

to deploy

add this to package.json

"predeploy": "npm run build",

"deploy": "gh-pages -d build"

and then this

npm run deploy