function get(sourceCode, destinationCode) {
  if (sourceCode in transforms && destinationCode in transforms[sourceCode]) {
    return transforms[sourceCode][destinationCode];
  }
  return null;
}
Get a transform given a source code and a destination code.
@param {string} sourceCode The code for the source projection.
@param {string} destinationCode The code for the destination projection.
@return {import("../proj.js").TransformFunction|null} The transform function (if found).