Can a Google Apps Script edit another Script?

Question

Can you work with scripts like you can with Docs, Spreadsheets and Forms? ie. I can copy a Document by using DocsList.getFileById(fileId).makeCopy, and then edit the copy with DocumentApp.openById(fileId).getBody.replaceText.

Copying the file (per above) will also create a copy of the associated script, but there doesn't seem to be an equivalent ScriptApp...replaceText (there is a ScriptApp, but it does different things). Is there any way to programmatically edit a script?

I want users to be able to run a script that will copy my script and customise it for them, based on some input they provide to my script.

Answer 1

Apps Scripts projects can be imported and exported with the Google Drive SDK:

Documentation Import/Export

The Google Drive SDK can be run from Apps Script, but you need to explicitly enable it.

Documentation enabling Advanced Services

It looks like you can't edit a project file, so you would need to do any custom editing in a document, save the file, then retrieve the contents of the file into a variable, and then use the variable in the source parameter for the contents of a new apps script file to be created.

Documentation Create New Files in a Project

So, there are no methods in a service to directly do what you want. Not like editing a Doc. You'd need to either export the current file from your project, then import it into their project, or have a copy of the current Apps Script file in a Document that you then retrieved, and wrote to their new project file.