Export of Langium AST types

[cdietrich]

Hi, is there a reason the only exported AST type is Grammar

langium/packages/langium/src/index.ts

Line 26 in f3cf206

export { Grammar, GrammarAST };

(in langium 1x we can do somthing likeimport type { AbstractElement, CrossReference, ParserRule } from "langium/lib/grammar/generated/ast")

[msujew]

@cdietrich To prevent pollution of the imports, all other internal ast types/methods are grouped in the GrammarAST object. You can access them from there.

(in langium 1x we can do somthing like import type { AbstractElement, CrossReference, ParserRule } from "langium/lib/grammar/generated/ast")

This was never recommended, but it's not possible in commonJS to prevent adopters from arbitrarily importing stuff from packages. ESM now enforces our exports.

[cdietrich]

is

port type { GrammarAST as grammar } from "langium".


x: grammar.AbstractElement

also just acc. working?

[msujew]

No, it's completely fine to rename imports, that's a normal ESM feature.