node_modules/rambda/src/head.js - devtools/devtools-frontend - Git at Google

 export function head(listOrString){
   if (typeof listOrString === 'string') return listOrString[ 0 ] || ''

   return listOrString[ 0 ]
 }
	export function head(listOrString){
	if (typeof listOrString === 'string') return listOrString[ 0 ] \|\| ''

	return listOrString[ 0 ]
	}