1 files changed, 20 insertions, 0 deletions
diff --git a/src/compiler/codegen/utils.ts b/src/compiler/codegen/utils.ts
new file mode 100644
index 000000000..5a9316fa1
--- /dev/null
+++ b/src/compiler/codegen/utils.ts
@@ -0,0 +1,20 @@
+/**
+ * Codegen utils
+ */
+
+import type { VariableDeclarator } from '@babel/types';
+
+/** Is this an import.meta.* built-in? You can pass an optional 2nd param to see if the name matches as well. */
+export function isImportMetaDeclaration(declaration: VariableDeclarator, metaName?: string): boolean {
+  let { init } = declaration;
+  if (!init) return false; // definitely not import.meta
+  // this could be `await import.meta`; if so, evaluate that:
+  if (init.type === 'AwaitExpression') {
+    init = init.argument;
+  }
+  // continue evaluating
+  if (init.type !== 'CallExpression' || init.callee.type !== 'MemberExpression' || init.callee.object.type !== 'MetaProperty') return false;
+  // optional: if metaName specified, match that
+  if (metaName && (init.callee.property.type !== 'Identifier' || init.callee.property.name !== metaName)) return false;
+  return true;
+}