1 files changed, 34 insertions, 0 deletions
diff --git a/node_modules/@11ty/eleventy/src/Engines/FrontMatter/JavaScript.js b/node_modules/@11ty/eleventy/src/Engines/FrontMatter/JavaScript.js
new file mode 100644
index 0000000..b91ba36
--- /dev/null
+++ b/node_modules/@11ty/eleventy/src/Engines/FrontMatter/JavaScript.js
@@ -0,0 +1,34 @@
+import { RetrieveGlobals } from "node-retrieve-globals";
+
+// `javascript` Front Matter Type
+export default function (frontMatterCode, context = {}) {
+	let { filePath } = context;
+
+	// context.language would be nice as a guard, but was unreliable
+	if (frontMatterCode.trimStart().startsWith("{")) {
+		return context.engines.jsLegacy.parse(frontMatterCode, context);
+	}
+
+	let vm = new RetrieveGlobals(frontMatterCode, {
+		filePath,
+		// ignored if vm.Module is stable (or --experimental-vm-modules)
+		transformEsmImports: true,
+	});
+
+	// Future warning until vm.Module is stable:
+	// If the frontMatterCode uses `import` this uses the `experimentalModuleApi`
+	// option in node-retrieve-globals to workaround https://github.com/zachleat/node-retrieve-globals/issues/2
+	let data = {
+		page: {
+			// Theoretically fileSlug and filePathStem could be added here but require extensionMap
+			inputPath: filePath,
+		},
+	};
+
+	// this is async, but it’s handled in Eleventy upstream.
+	return vm.getGlobalContext(data, {
+		reuseGlobal: true,
+		dynamicImport: true,
+		// addRequire: true,
+	});
+}