feat(dev): support for /_vfs.json (#809)

unjs · Jan 16, 2023 · fb65747 · fb65747
1 parent b631d84
commit fb65747
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Showing 2 changed files with 45 additions and 22 deletions.
diff --git a/.eslintrc b/.eslintrc
@@ -9,6 +9,7 @@
     "quotes": 0,
     "keyword-spacing": 0,
     "no-undef": 0,
+    "indent": 0,
     "unicorn/catch-error-name": 0,
     "unicorn/no-null": 0,
     "unicorn/no-useless-undefined": 0,

diff --git a/src/dev/vfs.ts b/src/dev/vfs.ts
@@ -8,10 +8,41 @@ export function createVFSHandler(nitro: Nitro) {
       ...nitro.options.virtual,
     };
 
+    const url = event.node.req.url || "";
+    const isJson =
+      event.node.req.headers.accept?.includes("application/json") ||
+      url.startsWith(".json");
+    const id = decodeURIComponent(url.replace(/^(\.json)?\/?/, "") || "");
+
+    if (id && !(id in vfsEntries)) {
+      throw createError({ message: "File not found", statusCode: 404 });
+    }
+
+    let content = id ? vfsEntries[id] : undefined;
+    if (typeof content === "function") {
+      content = await content();
+    }
+
+    if (isJson) {
+      return {
+        rootDir: nitro.options.rootDir,
+        entries: Object.keys(vfsEntries).map((id) => ({
+          id,
+          path: "/_vfs.json/" + encodeURIComponent(id),
+        })),
+        current: id
+          ? {
+              id,
+              content,
+            }
+          : null,
+      };
+    }
+
     const items = Object.keys(vfsEntries)
       .map((key) => {
         const linkClass =
-          event.req.url === `/${encodeURIComponent(key)}`
+          url === `/${encodeURIComponent(key)}`
             ? "bg-gray-700 text-white"
             : "hover:bg-gray-800 text-gray-200";
         return `<li class="flex flex-nowrap"><a href="/_vfs/${encodeURIComponent(
@@ -22,38 +53,29 @@ export function createVFSHandler(nitro: Nitro) {
         )}</a></li>`;
       })
       .join("\n");
+
     const files = `
       <div>
         <p class="bg-gray-700 text-white text-bold border-b border-gray-500 text-center">virtual files</p>
         <ul class="flex flex-col">${items}</ul>
       </div>
       `;
 
-    const id = decodeURIComponent(event.req.url?.slice(1) || "");
-
-    let file = "";
-    if (id in vfsEntries) {
-      let contents = vfsEntries[id];
-      if (typeof contents === "function") {
-        contents = await contents();
-      }
-      file = editorTemplate({
-        readOnly: true,
-        language: id.endsWith("html") ? "html" : "javascript",
-        theme: "vs-dark",
-        value: contents,
-        wordWrap: "wordWrapColumn",
-        wordWrapColumn: 80,
-      });
-    } else if (id) {
-      throw createError({ message: "File not found", statusCode: 404 });
-    } else {
-      file = `
+    const file = id
+      ? editorTemplate({
+          readOnly: true,
+          language: id.endsWith("html") ? "html" : "javascript",
+          theme: "vs-dark",
+          value: content,
+          wordWrap: "wordWrapColumn",
+          wordWrapColumn: 80,
+        })
+      : `
         <div class="m-2">
           <h1 class="text-white">Select a virtual file to inspect</h1>
         </div>
       `;
-    }
+
     return `
 <!doctype html>
 <html>