Using commas in type definition string property values breaks syntax highlighting

[brianary]

This DW script:

%dw 2.0
output application/json
type Money = String {format:"\$###0.00"}
---
{amt: 1200.00 as Money}

displays as:

If you add a comma to the format string:

%dw 2.0
output application/json
type Money = String {format:"\$#,##0.00"}
---
{amt: 1200.00 as Money}

displays as:

(the comma ends the string, and the closing quote starts a new one that includes the rest of the script)