old_contents: "use strict";
  
  import clear from "rollup-plugin-clear";
  import resolve from "rollup-plugin-node-resolve";
  import commonjs from "rollup-plugin-commonjs";
  import typescript from "rollup-plugin-typescript2";
  import screeps from "rollup-plugin-screeps";
  
  let cfg;
  const dest = process.env.DEST;
  if (!dest) {
    console.log("No destination specified - code will be compiled but not uploaded");
  } else if ((cfg = require("./screeps.json")[dest]) == null) {
    throw new Error("Invalid upload destination");
  }
  
  export default {
    input: "src/main.ts",
    output: {
      file: "dist/main.js",
      format: "cjs",
      sourcemap: true
    },
  
    plugins: [
      clear({ targets: ["dist"] }),
      resolve(),
      commonjs(),
      typescript({tsconfig: "./tsconfig.json"}),
      screeps({config: cfg, dryRun: cfg == null})
    ]
  }
  
new_contents: "use strict";
  
  import clear from "rollup-plugin-clear";
  import resolve from "rollup-plugin-node-resolve";
  import commonjs from "rollup-plugin-commonjs";
  import typescript from "rollup-plugin-typescript2";
  import screeps from "rollup-plugin-screeps";
  
  let cfg;
  const dest = process.env.DEST;
  if (!dest) {
    console.log("No destination specified - code will be compiled but not uploaded");
  } else if ((cfg = require("./screeps.json")[dest]) == null) {
    throw new Error("Invalid upload destination");
  }
  
  export default {
    input: "src/main.ts",
    output: {
      file: "dist/main.js",
      format: "cjs",
      sourcemap: true
    },
  
    plugins: [
      clear({ targets: ["dist"] }),
      resolve(),
      commonjs(),
      typescript({tsconfig: "./tsconfig.json"}),
      screeps({configFile: cfg, dryRun: cfg == null})
    ]
  }
  
subject: Tweak rollup settings slightly