Reformat editor punctuation in biblatex-chicago

Question

Working with biblatex-chicago in the memoir class, for works with only an editor, I need "ed." not to be preceded by a comma in citations and bibliography. That is, instead of

Firstname Lastname, ed.

I'd like

Firstname Lastname ed.

Based on this answer and the biblatex manual, I tried

\renewcommand{\editortypedelim}{\space}

but this produced an error (\editortypedelim undefined), and I'm not even sure if that's the right thing to be modifying, so I'm not sure where to go from here.

MWE:

\documentclass[12pt]{memoir}

\usepackage[notes,shorthandibid,backend=biber,addendum=false,sorting=nyt,giveninits=true,useprefix=false,shorthandfull]{biblatex-chicago}

\usepackage{filecontents}
\begin{filecontents*}{jobname.bib}
@book{lastname98,
editor = {Firstname Lastname},
title = {A Book},
date = {1898},
address = {City},
}
\end{filecontents*}
\addbibresource{jobname.bib}

\begin{document}

Have a sentence.\autocite{lastname98}

\printbibliography

\end{document}

Answer 1

The biblatex-chicago style uses \editordelim (which is not in the manual) instead of \editortypedelim. If you redefine this the comma disappears:

\documentclass[12pt]{memoir}

\usepackage[notes,shorthandibid,backend=biber,addendum=false,sorting=nyt,giveninits=false,useprefix=false,shorthandfull]{biblatex-chicago}
\renewcommand{\editordelim}{\addspace}

\usepackage{filecontents}
\begin{filecontents*}{jobname.bib}
@book{lastname98,
editor = {Firstname Lastname},
title = {A Book},
date = {1898},
address = {City},
}
\end{filecontents*}
\addbibresource{jobname.bib}

\begin{document}

Have a sentence.\autocite{lastname98}

\printbibliography

\end{document}

Note that your MWE used giveninits=true which prints initials for the first name. In the code above this option is false which means the name is printed in full, but the last name is printed before the first name.