I have a RegEx implemented with JavaScript that is close to doing what I want. However, I am having an issue figuring out the last piece which is causing an issue with an edge case. Here is the RegEx that I have so far:

/\$\{(. ?(}\(. ?\)|}))/g

The idea is that this RegEx would use a templating system to replace/inject variables in a string based on templated variables. Here is an example of the edge case issue:

"Here is a template string ${G:SomeVar:G${G:SomeVar:G} that value gets injected in."

The problem is the RegEx is matching this:

"${G:SomeVar:G${G:SomeVar:G}"

What I want it to match is this:

"${G:SomeVar:G}"

How would I get the RegEx to match the expected variable in this edge case?

CodePudding user response：

Instead of matching anything with (. ?), change it to not match another closing brace or dollar sign, [^{$].

\$\{([^{$] ?(}\(. ?\)|}))