import { TypescriptCompilerOptions } from "../interfaces";
import { TypescriptCompiler } from "../plugin";

const Funnel: any = require("broccoli-funnel");
const MergeTrees: any = require("broccoli-merge-trees");

/**
 * Backwards compat filter behavior.
 *
 * Preserves the filter aspect of compiling only .ts
 * and passing through all other files.
 */
export default function filterLike(
  inputNode: any,
  options?: TypescriptCompilerOptions
) {
  const passthrough = new Funnel(inputNode, {
    annotation: "TypeScript passthrough",
    exclude: ["**/*.ts"],
  });
  const filter = new Funnel(inputNode, {
    annotation: "TypeScript input",
    include: ["**/*.ts"],
  });
  return new MergeTrees(
    [passthrough, new TypescriptCompiler(filter, options)],
    {
      annotation: "TypeScript passthrough + output",
      overwrite: true,
    }
  );
}