ember-introjs/.node_modules.ember-try/rollup-plugin-babel/src/utils.js

An Ember Component for intro.js

export function assign ( target, source ) {
	Object.keys( source ).forEach( key => {
		target[ key ] = source[ key ];
	});
	return target;
}

let warned = {};
export function warnOnce ( warn, msg ) {
	if ( warned[ msg ] ) return;
	warned[ msg ] = true;
	warn( msg );
}