Eslint glob (**) is not considering all directories recursively

Some Googling turned up this thread on Github:

Before (not working): "lint": "eslint ./src/**/*.js"

After (working): "lint": "eslint './src/**/*.js'"

Try this instead:

"lint": "eslint src --ext .js"

Or for more than one extension:

"lint": "eslint src --ext .js,.jsx,.ts,.tsx"

See more info on eslint's docs