How to map a statement input to multiple statements

[sureshjoshi]

Great library! I ported from the regular typescript compiler for some of the nice bells and whistles.

However, I'm run into a "problem" that I have workarounds for, but I'm having a hard time believing there isn't a proper solution for.

I have a function of the form:

export function doThisThing(statement: ExpressionStatement): ExpressionStatement[]

Which will take in some line of code, and emit it as multiple expressions according to some rules.

I can't seem to find a ts-morph createExpressionStatement type of method, so I tried to use the ts factory.

newStatements.push(ts.factory.createExpressionStatement(...))

One problem with this is related to typing of ts.ExpressionStatement vs ExpressionStatement, but that's fine.

However, when I try to getText(), I get the following error:

Error: Debug Failure. False expression: Node must have a real position for this operation

I get that there is no associated source file, but shouldn't there be some way to extract the textual representation of a successfully created ExpressionStatement? I can't even add it to a source file, because to do that, I need to use stringified statements, which runs into the same problem.

The end goal here is to split up my project into more testable pieces, but it looks like I have to pass around SourceFile to every method.