cd up/and/down

app/nose/bin/cd.ts

@@ -1,25 +1,42 @@
-import { join, dirname } from "path"
-import { readdirSync } from "fs"
+import { dirname, resolve, isAbsolute } from "path"
+import { statSync } from "fs"
 import { projectDir } from "@/project"
 import { getState, setState } from "@/session"
 
-export default async function (path: string) {
-  if (path.endsWith("/")) path = path.slice(0, path.length - 1)
-  const cwd = getState("cwd")
-  const root = cwd || projectDir()
+export default async function (path?: string) {
+  const root = projectDir()
+  const cwd = getState("cwd") || root
 
-  if (path == "..") {
-    if (root === projectDir()) return
-
-    setState("cwd", dirname(cwd))
+  if (!path || path.trim() === "") {
+    setState("cwd", root)
     return
   }
 
-  for (const file of readdirSync(root, { withFileTypes: true })) {
-    if (file.name === path && file.isDirectory()) {
-      setState("cwd", join(root, file.name))
+  if (path.endsWith("/")) path = path.slice(0, -1)
+
+  if (path === ".") return
+  if (path === "..") {
+    if (cwd !== root) {
+      const parent = dirname(cwd)
+      if (parent.startsWith(root)) {
+        setState("cwd", parent)
+      }
+    }
     return
   }
+
+  const target = isAbsolute(path) ? resolve(path) : resolve(cwd, path)
+
+  if (!target.startsWith(root))
+    return ""
+
+  try {
+    const stat = statSync(target)
+    if (stat.isDirectory()) {
+      setState("cwd", target)
+      return
+    }
+  } catch {
   }
 
   return { error: `${path} doesn't exist` }