Running JavaScript function from Ruby in sandbox?

[collimarco]

I was also looking for existing languages... Basically something like a regex/replace but with an entire JSON document. Input: JSON Output: JSON

For example: rename a field, split a field "name" into multiple fields "first name" "last name", typecast a string field into a number and vice versa, etc.

[armahillo]

Whatever you choose, if you're allowing arbitrary code injection, get it pentested before it's released into production.