Natively support CommonJS at runtime (#3104)

* Natively support CommonJS at runtime

* cleanup how getters are handled, add fast path

* more consistent with node

* use * As

* Remove thrown modules on exception

* Handle exception better

---------

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/bundler.zig b/src/bundler.zig
index 9650f7f60..f3296134e 100644
--- a/src/bundler.zig
+++ b/src/bundler.zig
@@ -1203,6 +1203,7 @@ pub const Bundler = struct {
                         .minify_syntax = bundler.options.minify_syntax,
                         .minify_identifiers = bundler.options.minify_identifiers,
                         .transform_only = bundler.options.transform_only,
+                        .module_type = if (ast.exports_kind == .cjs) .cjs else .esm,
                     },
                     enable_source_map,
                 ),
@@ -1224,6 +1225,7 @@ pub const Bundler = struct {
                     .minify_syntax = bundler.options.minify_syntax,
                     .minify_identifiers = bundler.options.minify_identifiers,
                     .transform_only = bundler.options.transform_only,
+                    .module_type = if (ast.exports_kind == .cjs) .cjs else .esm,
                 },
                 enable_source_map,
             ),
@@ -1287,6 +1289,7 @@ pub const Bundler = struct {
         inject_jest_globals: bool = false,
 
         dont_bundle_twice: bool = false,
+        allow_commonjs: bool = false,
     };
 
     pub fn parse(
@@ -1390,6 +1393,8 @@ pub const Bundler = struct {
                 // @bun annotation
                 opts.features.dont_bundle_twice = this_parse.dont_bundle_twice;
 
+                opts.features.commonjs_at_runtime = this_parse.allow_commonjs;
+
                 opts.can_import_from_bundle = bundler.options.node_modules_bundle != null;
 
                 opts.tree_shaking = bundler.options.tree_shaking;