findOrigin
Given a 1-indexed lineNumber and columnNumber from a call site in the generated source, find the corresponding call site location in the original source.
If the lineNumber and columnNumber provided are not found in any source map, then an empty object is returned.
Parameters
lineNumber
The 1-indexed line number of the call site in the generated source
columnNumber
The 1-indexed column number of the call site in the generated source