define( [

"./arr"

], function( arr ) {

“use strict”;

// Support: IE 9 - 11+, Edge 18+, Android Browser 4.0 - 4.3 only, iOS 7 - 11 only, Safari 11 only, // Firefox <= 61 only // Provide fallback for browsers without Array#flat. return arr.flat ? function( array ) {

return arr.flat.call( array );

} : function( array ) {

return arr.concat.apply( [], array );

};

} );