Automatically convert esmodules to commonjs

Author: djblue

package.json

@@ -17,6 +17,8 @@
     "vega-lite": "^5.1.1"
   },
   "devDependencies": {
+    "@babel/core": "^7.22.5",
+    "@babel/plugin-transform-modules-commonjs": "^7.22.5",
     "browserify": "^16.5.2",
     "source-map-support": "^0.5.20",
     "ws": "^8.2.3"

src/portal/ui/load.cljs

@@ -1,4 +1,7 @@
-(ns ^:no-doc portal.ui.load)
+(ns ^:no-doc portal.ui.load
+  (:require [clojure.string :as str]
+            ["@babel/core" :as babel]
+            ["@babel/plugin-transform-modules-commonjs" :as commonjs]))
 
 (defn- module-wrapper
   "https://nodejs.org/api/modules.html#the-module-wrapper"
@@ -41,6 +44,9 @@
       cache
       modules))))
 
+(defn- ->common-js [source]
+  (.-code (babel/transformSync source #js {:plugins #js [commonjs]})))
+
 (defn node-require
   ([module]
    (node-require nil module))
@@ -54,7 +60,7 @@
           (let [exports    #js {}
                 module-obj (Module. exports)]
             (swap! require-cache assoc file module-obj)
-            ((js/eval (module-wrapper value))
+            ((js/eval (module-wrapper (update value :source ->common-js)))
              exports #(node-require (:dir value) %) module-obj (:file value) (:dir value))
             (.-exports module-obj))))
       (catch :default e