export default function(defs) {
  defs('EPSG:4326', "+title=WGS 84 (long/lat) +proj=longlat +ellps=WGS84 +datum=WGS84 +units=degrees");
  defs('EPSG:4269', "+title=NAD83 (long/lat) +proj=longlat +a=6378137.0 +b=6356752.31414036 +ellps=GRS80 +datum=NAD83 +units=degrees");
  defs('EPSG:3857', "+title=WGS 84 / Pseudo-Mercator +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs");

  defs.WGS84 = defs['EPSG:4326'];
  defs['EPSG:3785'] = defs['EPSG:3857']; // maintain backward compat, official code is 3857
  defs.GOOGLE = defs['EPSG:3857'];
  defs['EPSG:900913'] = defs['EPSG:3857'];
  defs['EPSG:102113'] = defs['EPSG:3857'];
}