Merge pull request #135 from reesericci/patch-1

Add async/await & promise support to Bun runner

Author: byroot

lib/execjs/support/bun_runner.js

@@ -1,5 +1,5 @@
-(function(program, execJS) { (function() {execJS(program) }).call({}); })(function(self, global, process, module, exports, require, console, setTimeout, setInterval, clearTimeout, clearInterval, setImmediate, clearImmediate) { #{source}
-}, function(program) {
+(function(program, execJS) { (function() {execJS(program) }).call({}); })(async function(self, global, process, module, exports, require, console, setTimeout, setInterval, clearTimeout, clearInterval, setImmediate, clearImmediate) { #{source}
+}, async function(program) {
   // Force BunJS to use sloppy mode see https://github.com/oven-sh/bun/issues/4527#issuecomment-1709520894
   exports.abc = function(){}
   var __process__ = process;
@@ -11,7 +11,7 @@
   try {
     delete this.process;
     delete this.console;
-    result = program();
+    result = await program();
     process = __process__;
     if (typeof result == 'undefined' && result !== null) {
       printFinal('["ok"]');

test/test_execjs.rb

@@ -450,6 +450,15 @@ def test_uglify
       context.call("uglify", "function foo(bar) {\n  return bar;\n}")
   end
 
+  def test_async_bun
+    skip unless ENV["EXECJS_RUNTIME"] == "Bun"
+    source = <<-JS
+      async function testAsync() { return (await new Promise((resolve) => { resolve("it works!") } )) }
+    JS
+    context = ExecJS.compile(source)
+    assert_equal "it works!", context.call("testAsync")
+  end
+
   private
 
     def assert_output(expected, actual)