support import.meta in system transform

packages/babel-plugin-transform-modules-systemjs/src/index.js

@@ -87,6 +87,20 @@ export default declare((api, options) => {
         }
       },
 
+      MetaProperty(path, state) {
+        if (
+          path.node.meta.name === "import" &&
+          path.node.property.name === "meta"
+        ) {
+          path.replaceWith(
+            t.memberExpression(
+              t.identifier(state.contextIdent),
+              t.identifier("meta"),
+            ),
+          );
+        }
+      },
+
       ReferencedIdentifier(path, state) {
         if (
           path.node.name == "__moduleName" &&

packages/babel-plugin-transform-modules-systemjs/test/fixtures/dynamic-import/import-meta/input.mjs

@@ -0,0 +1 @@
+console.log(import.meta.url);

packages/babel-plugin-transform-modules-systemjs/test/fixtures/dynamic-import/import-meta/output.mjs

@@ -0,0 +1,10 @@
+System.register([], function (_export, _context) {
+  "use strict";
+
+  return {
+    setters: [],
+    execute: function () {
+      console.log(_context.meta.url);
+    }
+  };
+});

packages/babel-plugin-transform-modules-systemjs/test/fixtures/dynamic-import/options.json

@@ -1,3 +1,3 @@
 {
-  "plugins": ["external-helpers", "syntax-dynamic-import", "transform-modules-systemjs"]
+  "plugins": ["external-helpers", "syntax-dynamic-import", "syntax-import-meta", "transform-modules-systemjs"]
 }