fix webpack externals

Signed-off-by: karthik2804 <[email protected]>

Author: karthik2804

plugins/webpack/index.js

@@ -1,28 +1,26 @@
 class SpinSdkPlugin {
     constructor() {
-        this.externals = {
-            "wasi:http/[email protected]": "wasi:http/[email protected]",
-            "wasi:cli/[email protected]": "wasi:cli/[email protected]",
-            "wasi:filesystem/[email protected]": "wasi:filesystem/[email protected]",
-            "fermyon:spin/[email protected]": "fermyon:spin/[email protected]",
-            "fermyon:spin/[email protected]": "fermyon:spin/[email protected]",
-            "fermyon:spin/[email protected]": "fermyon:spin/[email protected]",
-            "fermyon:spin/[email protected]": "fermyon:spin/[email protected]",
-            "fermyon:spin/[email protected]": "fermyon:spin/[email protected]",
-            "fermyon:spin/[email protected]": "fermyon:spin/[email protected]",
-            "fermyon:spin/[email protected]": "fermyon:spin/[email protected]",
-            "fermyon:spin/[email protected]": "fermyon:spin/[email protected]",
-            "wasi:config/[email protected]": "wasi:config/[email protected]",
-            "spin:postgres/[email protected]": "spin:postgres/[email protected]",
-        };
+        this.externals = [
+            /^wasi:.*/,
+            /^fermyon:.*/,
+            /^spin:.*/,
+        ];
     }
 
     apply(compiler) {
         // If externals are already defined, merge them with new externals
-        if (compiler.options.externals && typeof compiler.options.externals === 'object') {
-            this.externals = Object.assign({}, compiler.options.externals, this.externals);
+        const userExternals = compiler.options.externals;
+
+        if (Array.isArray(userExternals)) {
+            // Append to the existing array
+            compiler.options.externals = [...userExternals, ...this.externals];
+        } else if (typeof userExternals === 'object') {
+            // Wrap in an array and add the object as-is
+            compiler.options.externals = [userExternals, ...this.externals];
+        } else {
+            // Default: Just use our externals
+            compiler.options.externals = [...this.externals];
         }
-        compiler.options.externals = this.externals;
     }
 }