import { BuildConfig, defineBuildConfig } from "unbuild";
import { merge } from "lodash-es";

// OR tsup

const BaseConfig = {
  entries: [
    "src/index.ts",
    {
      input: "src/",
      outDir: "dist/esm/",
      format: "esm",
      ext: "mjs",
      declaration: true,
    },
    {
      input: "src/",
      outDir: "dist/cjs/",
      format: "cjs",
      ext: "cjs",
      declaration: true,
    },
  ],
  declaration: true,
  replace: {},
  rollup: {
    emitCJS: true,
    output: {
      exports: "named"
    }
  },
} as BuildConfig;


export function mergeConfig(targetConfig: BuildConfig) {
  return defineBuildConfig(merge(BaseConfig, targetConfig))
}