esbuild.js

const esbuild = require("esbuild");

const production = process.argv.includes("--production");
const watch = process.argv.includes("--watch");

/** @type {import('esbuild').Plugin} */
const esbuildProblemMatcherPlugin = {
  name: "esbuild-problem-matcher",
  setup(build) {
    build.onStart(() => console.log("[watch] build started"));
    build.onEnd((result) => {
      result.errors.forEach(({ text, location }) => {
        console.error(`[ERROR] ${text}`);
        if (location) {
          console.error(`    ${location.file}:${location.line}:${location.column}`);
        }
      });
      console.log("[watch] build finished");
    });
  },
};

async function main() {
  // Only the extension host code is bundled. Runtime text assets -- the
  // webview templates under assets/webview/ and the test-host sources under
  // assets/testhost/ -- are NOT bundled or copied here: they are read from
  // disk at runtime via src/extensionAssets.ts relative to the extension
  // root, and they ship in the VSIX because .vscodeignore keeps assets/**.
  const ctx = await esbuild.context({
    // Two bundles: the extension host, and the analysis worker thread the host
    // spawns (out/analysisWorker.js) so full analysis passes run off-thread.
    entryPoints: ["src/extension.ts", "src/analysisWorker.ts"],
    bundle: true,
    format: "cjs",
    minify: production,
    sourcemap: !production,
    sourcesContent: false,
    platform: "node",
    outdir: "out",
    external: ["vscode"],
    logLevel: "silent",
    plugins: [esbuildProblemMatcherPlugin],
  });

  if (watch) {
    await ctx.watch();
  } else {
    await ctx.rebuild();
    await ctx.dispose();
  }
}

main().catch((e) => {
  console.error(e);
  process.exit(1);
});