fix(core): don't panic on non-existent cwd (#14957)

Co-authored-by: cjihrig <cjihrig@gmail.com>

3 files changed, 37 insertions, 2 deletions

diff --git a/cli/main.rs b/cli/main.rs
index 01dbba848..d9c4486f4 100644
--- a/cli/main.rs
+++ b/cli/main.rs
@@ -602,7 +602,7 @@ async fn eval_command(
   // deno_graph works off of extensions for local files to determine the media
   // type, and so our "fake" specifier needs to have the proper extension.
   let main_module =
-    resolve_url_or_path(&format!("./$deno$eval.{}", eval_flags.ext)).unwrap();
+    resolve_url_or_path(&format!("./$deno$eval.{}", eval_flags.ext))?;
   let permissions = Permissions::from_options(&flags.permissions_options());
   let ps = ProcState::build(Arc::new(flags)).await?;
   let mut worker = create_main_worker(
diff --git a/cli/tests/unit/process_test.ts b/cli/tests/unit/process_test.ts
index 5acb92226..e610095ff 100644
--- a/cli/tests/unit/process_test.ts
+++ b/cli/tests/unit/process_test.ts
@@ -2,6 +2,7 @@
 import {
   assert,
   assertEquals,
+  assertStrictEquals,
   assertStringIncludes,
   assertThrows,
 } from "./test_util.ts";
@@ -628,3 +629,35 @@ Deno.test(
     }
   },
 );
+
+Deno.test(
+  {
+    permissions: { run: true, read: true, write: true },
+    ignore: Deno.build.os === "windows",
+  },
+  async function non_existent_cwd(): Promise<void> {
+    const p = Deno.run({
+      cmd: [
+        Deno.execPath(),
+        "eval",
+        `const dir = Deno.makeTempDirSync();
+        Deno.chdir(dir);
+        Deno.removeSync(dir);
+        const p = Deno.run({cmd:[Deno.execPath(), "eval", "console.log(1);"]});
+        const { code } = await p.status();
+        p.close();
+        Deno.exit(code);
+        `,
+      ],
+      stdout: "piped",
+      stderr: "piped",
+    });
+
+    const { code } = await p.status();
+    const stderr = new TextDecoder().decode(await p.stderrOutput());
+    p.close();
+    p.stdout.close();
+    assertStrictEquals(code, 1);
+    assertStringIncludes(stderr, "invalid module path");
+  },
+);
diff --git a/core/module_specifier.rs b/core/module_specifier.rs
index ecdebbd74..3f329f53f 100644
--- a/core/module_specifier.rs
+++ b/core/module_specifier.rs
@@ -138,7 +138,9 @@ pub fn resolve_url_or_path(
 pub fn resolve_path(
   path_str: &str,
 ) -> Result<ModuleSpecifier, ModuleResolutionError> {
-  let path = current_dir().unwrap().join(path_str);
+  let path = current_dir()
+    .map_err(|_| ModuleResolutionError::InvalidPath(path_str.into()))?
+    .join(path_str);
   let path = normalize_path(&path);
   Url::from_file_path(path.clone())
     .map_err(|()| ModuleResolutionError::InvalidPath(path))