import { build } from "esbuild";
import { execSync } from "node:child_process";

let buildId;
try {
  buildId = execSync("git log -1 --format=%h-%cd --date=format:%Y%m%d%H%M").toString().trim();
} catch {
  buildId = "dev-" + Date.now();
}

await build({
  entryPoints: ["src/index.ts"], bundle: true, minify: true, format: "iife",
  outfile: "dist/v1.js", target: ["es2020"], // 代码依赖 globalThis（es2018 目标名不副实）
  // define 键必须用点链：esbuild 只做精确表达式匹配，裸键不会替换
  // globalThis.__BUILD_ID__ 成员访问（实测 0.24.2），裸键将恒为 "unknown"
  define: { "globalThis.__BUILD_ID__": JSON.stringify(buildId) },
});