esbuild.js

import esbuild from "esbuild";
import fs from "node:fs";
import path from "node:path";

const copyVtRouteGraphicsBundle = () => {
  const source = path.resolve(
    "node_modules",
    "route-graphics",
    "dist",
    "RouteGraphics.js",
  );
  const target = path.resolve("vt", "static", "RouteGraphics.js");

  if (!fs.existsSync(source)) {
    throw new Error(
      "Missing route-graphics dist bundle. Run `bun install` before building VT assets.",
    );
  }

  fs.mkdirSync(path.dirname(target), { recursive: true });
  fs.copyFileSync(source, target);
};

esbuild
  .build({
    bundle: true,
    minify: true,
    sourcemap: false,
    format: "esm",
    outfile: `./dist/RouteEngine.js`,
    entryPoints: [`src/index.js`],
  })
  .then(() => console.log("Build completed"))
  .catch(() => {
    console.log("Build failed");
  });

copyVtRouteGraphicsBundle();

esbuild
  .build({
    bundle: true,
    minify: true,
    sourcemap: true,
    format: "esm",
    outfile: `./vt/static/RouteEngine.js`,
    entryPoints: [`src/index.js`],
  })
  .then(() => console.log("Build completed"))
  .catch(() => {
    console.log("Build failed");
  });