The subdivision plat shall conform to design standards that will encourage good development patterns within the municipality. Where either or both an Official Map or/and a Master Plan has have been adopted, the subdivision shall conform to the proposals and conditions shown thereon. The streets, drainage rights-of-way, school sites, public parks and playgrounds shown on an officially adopted Master Plan or Official Map shall be considered in approval of subdivision plats. Where no Master Plan or Official Map exists, streets and drainage and rights-of-way shall be shown on the final plat, in accordance with N.J.S.A. 40:55D-3 to 40:55D-7, and shall be such as lend themselves to the harmonious development of the Borough and enhance the public welfare in accordance with the following design standards.