Extend WrangleJson

extend-wrangler.ts

import { WranglerJson, WranglerJsonSpec } from "alchemy/cloudflare";
import { writeFile } from "fs/promises";
import prettier from "prettier";

interface ExtendedWranglerJsonSpec extends WranglerJsonSpec {
  migrations: {
    tag: string;
    new_sqlite_classes: string[];
  }[];
}

export async function addDurableObjectMigration(
  wranglerJson: WranglerJson,
  className: string,
  tag = "v1"
) {
  const updatedWranglerJsonc: ExtendedWranglerJsonSpec = {
    ...wranglerJson.spec,
    migrations: [
      {
        tag: tag,
        new_sqlite_classes: [className],
      },
    ],
  };

  const contents = await prettier.format(JSON.stringify(updatedWranglerJsonc), {
    parser: "json",
    editor: {
      tabWidth: 2,
      indentWidth: 2,
    },
  });

  await writeFile(wranglerJson.path, contents);
}