fix: interop modules with primitive default export

package.json

@@ -102,6 +102,7 @@
     "estree-walker": "^3.0.3",
     "etag": "^1.8.1",
     "fast-glob": "^3.3.2",
+    "is-installed-globally": "^1.0.0",
     "mime": "^4.0.4",
     "mlly": "^1.7.3",
     "moment-timezone": "^0.5.46",

src/utils.ts

@@ -106,9 +106,10 @@ function interopDefault(mod: any): any {
 
   const def = mod.default;
   const defType = typeof def;
-  if (def === null || (defType !== "object" && defType !== "function")) {
+  if (def === null || def === undefined) {
     return mod;
   }
+  const defIsObj = defType === "object" || defType === "function";
 
   return new Proxy(mod, {
     get(target, prop, receiver) {
@@ -121,11 +122,13 @@ function interopDefault(mod: any): any {
       if (Reflect.has(target, prop)) {
         return Reflect.get(target, prop, receiver);
       }
-      let fallback = Reflect.get(def, prop, receiver);
-      if (typeof fallback === "function") {
-        fallback = fallback.bind(def);
+      if (defIsObj) {
+        let fallback = Reflect.get(def, prop, receiver);
+        if (typeof fallback === "function") {
+          fallback = fallback.bind(def);
+        }
+        return fallback;
       }
-      return fallback;
     },
     apply(target, thisArg, args) {
       if (typeof target === "function") {

test/__snapshots__/fixtures.test.ts.snap

@@ -11,6 +11,7 @@ exports[`fixtures > deps > stdout 1`] = `
 npm:defu {}
 npm:destr true
 npm:etag: true
+npm:is-installed-globally false
 npm:mime: true
 npm:typescript: true
 npm:moment-timezone true

test/fixtures/deps/iig.ts

@@ -0,0 +1,3 @@
+import isInstalledGlobally from "is-installed-globally";
+
+console.log("npm:is-installed-globally", isInstalledGlobally);

test/fixtures/deps/index.ts

@@ -3,6 +3,7 @@ import "./consola";
 import "./defu";
 import "./destr";
 import "./etag";
+import "./iig";
 import "./mime";
 import "./typescript";
 import "./moment";