Allow use of an empty array as default value in allowedStartRules option
Closed this issue · 1 comments
XenoS-ITA commented
How the feature should work
When an empty
or null array
is passed peggy should take the default value, which is the first rule.
Right now if you define allowedStartRules there is no method to use the first rule.
Use case behind it
In the following code, if the file is a library, all rules should be added as start instead if it is not the first rule should be taken
const output = peggy.generate(fileContent, {
format: "commonjs",
output: "source",
allowedStartRules: isLibrary ? ["*"] : []
})
Even some kind of ENUM might be fine
hildjj commented
I'm making it so that null
, undefined
, and []
all get the default start rule.