import { build } from "esbuild";
import fs from "node:fs";
import path from "node:path";
import { fileURLToPath } from "node:url";
const repoRoot = path.resolve(
path.dirname(fileURLToPath(import.meta.url)),
".."
);
const srcDir = path.join(repoRoot, "src");
const distDir = path.join(repoRoot, "dist");
function collectTsFiles(dir) {
/** @type {string[]} */
const results = [];
for (const entry of fs.readdirSync(dir, { withFileTypes: true })) {
if (entry.name.startsWith(".")) continue;
const fullPath = path.join(dir, entry.name);
if (entry.isDirectory()) {
results.push(...collectTsFiles(fullPath));
continue;
}
if (!entry.isFile()) continue;
if (entry.name.endsWith(".ts") && !entry.name.endsWith(".test.ts")) {
results.push(fullPath);
}
}
return results;
}
const entryPoints = collectTsFiles(srcDir);
await build({
entryPoints,
outdir: distDir,
outbase: srcDir,
bundle: true,
splitting: true,
format: "esm",
platform: "node",
target: "node20",
packages: "external",
sourcemap: false,
legalComments: "none",
});
// Ensure CLI entry has a proper shebang at the very top (esbuild may drop it when bundling).
const distIndexPath = path.join(distDir, "index.js");
if (fs.existsSync(distIndexPath)) {
const raw = fs.readFileSync(distIndexPath, "utf8");
const shebang = "#!/usr/bin/env node\n";
if (!raw.startsWith("#!")) {
fs.writeFileSync(distIndexPath, shebang + raw, "utf8");
} else if (!raw.startsWith(shebang)) {
// Normalize to our expected shebang.
const withoutFirstLine = raw.replace(/^#!.*\n/, "");
fs.writeFileSync(distIndexPath, shebang + withoutFirstLine, "utf8");
}
}
