Acorn-typescript plugin error

[bpstrngr]

I'm trying to use your acorn-typescript AST helper plugin as it seems the most advanced vanillajs solution (microsoft/typescript is written in ts itself so needs itself to build itself, as well as @babel/parser, which is just a fork of acorn anyway, while the former seems to have a too complicated structure for my comprehension, but these aren't to be discussed here). When I extend acorn with it though, it's throwing an error at the first typescript syntax:

import {Parser,parse} from "./acorn/acorn/src/index.js";
import parseTypescript from "./patternfly-org/packages/ast-helpers)/acorn-typescript.js";
function compile(source,dialect){
  if(dialect=="typescript")
  Parser.extend(parseTypescript);
  parse(source,{sourceType:"module"});
}
compile(source,"typescript");
SyntaxError: Unexpected token (4:12) {
                pos: 131,
                loc: Position { line: 4, column: 12 },                                                               
                raisedAt: 132
}

The code at that location being:

  import { version as rollupVersion } from 'package.json';
  import Bundle from '../Bundle';
  import Graph from '../Graph';
> import type { PluginDriver } from '../utils/PluginDriver';
  [...]

Am I using it wrong or is this an unsupported typescript syntax?
Would you have recommendations on where to start fixing this?
Thanks!

[evwilkin]

@bpstrngr thanks for your questions. This acorn-typescript package is something we pulled in for our own build system, but is not code that we created or are able to support for the community - the original code lives in this repo, and you have more luck troubleshooting with the author:

• https://github.com/g-plane/acorn-typescript

You may also look at not using the import type { PluginDriver } syntax and just use import { PluginDriver }, more info here:

• Should I explicitly separate "import" and "import type" statements? microsoft/TypeScript#39861 (comment)