更新

2026-08-11 17:41:36 +08:00
parent cfe4c82c90
commit 03fe4ddf9d
18771 changed files with 3617239 additions and 0 deletions
@@ -0,0 +1,67 @@
+(function () {
+
+  /*
+   * Named exports support for legacy module formats in SystemJS 2.0
+   * 
+   * Note: This extra is deprecated as the behaviour is now the default in core,
+   *       so will be removed in the next major.
+   */
+  (function (global) {
+    var systemJSPrototype = global.System.constructor.prototype;
+
+    // hook System.register to know the last declaration binding
+    var lastRegisterDeclare;
+    var systemRegister = systemJSPrototype.register;
+    systemJSPrototype.register = function (name, deps, declare) {
+      lastRegisterDeclare = typeof name === 'string' ? declare : deps;
+      systemRegister.apply(this, arguments);
+    };
+
+    var getRegister = systemJSPrototype.getRegister;
+    systemJSPrototype.getRegister = function () {
+      var register = getRegister.call(this);
+      // if it is an actual System.register call, then its ESM
+      // -> dont add named exports
+      if (!register || register[1] === lastRegisterDeclare || register[1].length === 0)
+        return register;
+
+      // otherwise it was provided by a custom instantiator
+      // -> extend the registration with named exports support
+      var registerDeclare = register[1];
+      register[1] = function (_export, _context) {
+        // hook the _export function to note the default export
+        var defaultExport, hasDefaultExport = false;
+        var declaration = registerDeclare.call(this, function (name, value) {
+          if (typeof name === 'object' && name && name.__useDefault)
+            defaultExport = name.default, hasDefaultExport = true;
+          else if (name === 'default')
+            defaultExport = value;
+          else if (name === '__useDefault')
+            hasDefaultExport = true;
+          _export(name, value);
+        }, _context);
+        // hook the execute function
+        var execute = declaration.execute;
+        if (execute)
+          declaration.execute = function () {
+            execute.call(this);
+            // do a bulk export of the default export object
+            // to export all its names as named exports
+
+            if (hasDefaultExport)
+              for (var exportName in defaultExport) {
+                if (
+                  Object.prototype.hasOwnProperty.call(defaultExport,  exportName) // Check if epoxrt name is not inherited, safe for Object.create(null)
+                  && exportName !== 'default' // default is not a named export
+                ) {
+                  _export(exportName, defaultExport[exportName]);
+                }
+              }
+          };
+        return declaration;
+      };
+      return register;
+    };
+  })(typeof self !== 'undefined' ? self : global);
+
+})();