feat: add support for dir-dependency message type (#524)

Author: bradlc

src/index.js

@@ -134,6 +134,9 @@ export default async function loader(content, sourceMap, meta) {
       case "context-dependency":
         this.addContextDependency(message.file);
         break;
+      case "dir-dependency":
+        this.addContextDependency(message.dir);
+        break;
       case "asset":
         if (message.content && message.file) {
           this.emitFile(

test/loader.test.js

@@ -101,6 +101,12 @@ describe("loader", () => {
           file: path.resolve(__dirname, "fixtures", "deps"),
           content: "",
           plugin,
+        },
+        {
+          type: "dir-dependency",
+          dir: path.resolve(__dirname, "fixtures", "deps2"),
+          content: "",
+          plugin,
         }
       );
     };
@@ -122,6 +128,9 @@ describe("loader", () => {
     expect(contextDependencies).toContain(
       path.resolve(__dirname, "fixtures", "deps")
     );
+    expect(contextDependencies).toContain(
+      path.resolve(__dirname, "fixtures", "deps2")
+    );
     expect(missingDependencies).toContain(
       path.resolve(__dirname, "fixtures", "missing-dep.html")
     );