Module-Starter ESM Migration

Summary: Ref T2858

Reviewers: #testers, kuba-orlik

Reviewed By: #testers, kuba-orlik

Maniphest Tasks: T2858

Differential Revision: https://hub.sealcode.org/D1662

esbuild.js

@@ -1,7 +1,11 @@
-const { build } = require("esbuild");
-const glob = require("tiny-glob");
-const { promises: fs } = require("node:fs");
-const { extname, resolve, relative } = require("node:path");
+import * as esbuild from "esbuild";
+import { default as glob } from "tiny-glob";
+import { promises as fs } from "node:fs";
+import { extname, resolve, relative, dirname } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
 
 const watch = process.argv.at(-1) === "--watch";
 
@@ -40,15 +44,24 @@ const handle_absolute_paths = (project_dir) => ({
 	let entryPoints = Object.fromEntries(
 		(await glob("./src/**/*.ts")).map((e) => [e.replace(/\.ts$/, ""), e])
 	);
-	build({
+	
+	const buildOptions = {
 		entryPoints,
 		sourcemap: true,
+		bundle: false,
 		outdir: "./lib",
 		logLevel: "info",
 		platform: "node",
-		watch,
-		target: "node16",
+		target: "es2022",
 		format: "esm",
 		plugins: [handle_absolute_paths(__dirname)],
-	});
+	};
+	
+	if (watch) {
+		const context = await esbuild.context(buildOptions);
+		await context.watch();
+	} else {
+		await esbuild.build(buildOptions);
+	}
 })();
+

package.json

@@ -3,8 +3,14 @@
 	"version": "0.0.1",
 	"description": "module template",
 	"main": "lib/src/index.js",
+	"exports": {
+		".": {
+			"types": "./@types/index.d.ts",
+			"default": "./lib/src/index.js"
+		}
+	},
 	"scripts": {
-		"build": "node ./esbuild.cjs",
+		"build": "node ./esbuild.js",
 		"prepare": "rm -rf @types && npm run typecheck && npm run build-declarations && npm run build",
 		"pretest": "npm run build",
 		"test": "node test.cjs",

test.cjs

@@ -13,6 +13,7 @@ let mocha_options = [
 	"--timeout=10000",
 	"--require",
 	"source-map-support/register",
+	"--exit",
 ];
 
 if (args["test-report"]) {

tsconfig.json

@@ -1,7 +1,7 @@
 {
 	"compilerOptions": {
-		"module": "commonjs",
-		"moduleResolution": "node",
+		"module": "nodenext",
+		"moduleResolution": "nodenext",
 		"noImplicitAny": true,
 		"noImplicitThis": true,
 		"strictNullChecks": true,