esbuild.js

/* eslint-disable @typescript-eslint/no-var-requires */
async function start(watch) {
  await require("esbuild").build({
    entryPoints: ["src/index.ts", "./src/server.ts"],
    bundle: true,
    watch,
    minify: process.env.NODE_ENV === "production",
    sourcemap: process.env.NODE_ENV === "development",
    define: {},
    mainFields: ["module", "main"],
    external: ["coc.nvim"],
    platform: "node",
    // keep same node version which coc.nvim support
    target: "node10.12",
    outdir: "./out",
    plugins: [],
  });
}

let watch = false;

if (process.argv.length > 2 && process.argv[2] === "--watch") {
  console.log("watching...");
  watch = {
    onRebuild(error) {
      if (error) {
        console.error("watch build failed:", error);
      } else {
        console.log("watch build succeeded");
      }
    },
  };
}

start(watch)
  .then(() => {
    console.log("build succeeded");
  })
  .catch(() => {
    console.error("build failed");
  });