add-types-package-json.ts

import path from "path";
import fs from "fs";
import { getPackages } from "@monorepo-utils/package-utils";

const sourceDir = "src";

getPackages(__dirname).map(x => {
  let types = getTypesFile({
    sourceDir: path.resolve(x.location, sourceDir)
  });
  if (!types) {
    console.log(`Could not find a types file for '${x.location}'`);
    return;
  }
  types = path.relative(x.location, types);
  console.log(`Using ${types} for ${x.location}`);
  const oldTypes = x.packageJSON["types"];
  delete x.packageJSON["types"];
  delete x.packageJSON["publishConfig"];
  const publishConfig = oldTypes && { types: oldTypes };
  const newJSON = JSON.stringify(
    {
      name: x.packageJSON.name,
      types,
      ...(publishConfig && { publishConfig }),
      ...x.packageJSON
    },
    null,
    2
  );
  fs.writeFileSync(path.resolve(x.location, "package.json"), newJSON + "\n");
});

function getTypesFile({ sourceDir }) {
  const tsx = path.join(sourceDir, "index.tsx");
  if (fs.existsSync(tsx)) {
    return tsx;
  }
  const ts = path.join(sourceDir, "index.ts");
  if (fs.existsSync(ts)) {
    return ts;
  }
}