Visual Studio Code has excellent support for creating Liquid Templates for Azure API Management or Logic Apps. With the right extensions it can provide both code completion and a live preview which displays the output of your template while you are editing it. With a split editor you can see both the input, the transform and the output at the same time.
These extensions use the original Shopify Liquid while Microsoft uses the .NET port DotLiquid which has some differences. The main one is that the first letter of filters are lower case in the original version and defaults to upper case in DotLiquid, so before using the template somewhere like API Management we need to convert the case. If there are more than a few filters you might want to use this RegEx method:
That is all, have a good day!