fix(oxfmt): render diagnostics with source in Stdin mode (#27130)

This makes stdin mode also print pretty error diagnostics.

Author: leaysgur

apps/oxfmt/src/cli/stdin_runner.rs

@@ -5,6 +5,8 @@ use std::{
     sync::Arc,
 };
 
+use oxc_diagnostics::{DiagnosticService, GraphicalReportHandler};
+
 use super::{CliRunResult, FormatCommand, Mode};
 use crate::core::{
     ConfigScopes, ExternalServices, FormatResult, JsConfigLoaderCb, ResolveOutcome,
@@ -115,7 +117,7 @@ impl StdinRunner {
             return CliRunResult::FormatSucceeded;
         }
 
-        let Some(kind) = classify_file_kind(Arc::from(filepath)) else {
+        let Some(kind) = classify_file_kind(Arc::from(filepath.as_path())) else {
             utils::print_and_flush(stderr, "Unsupported file type for stdin-filepath\n");
             return CliRunResult::InvalidOptionConfig;
         };
@@ -141,10 +143,16 @@ impl StdinRunner {
                 utils::print_and_flush(stdout, &code);
                 CliRunResult::FormatSucceeded
             }
-            FormatResult::Error(errors) => {
-                for err in errors {
-                    utils::print_and_flush(stderr, &format!("{err}\n"));
+            FormatResult::Error(diagnostics) => {
+                let handler = GraphicalReportHandler::new();
+                let mut output = String::new();
+                for error in
+                    DiagnosticService::wrap_diagnostics(&cwd, &filepath, &source_text, diagnostics)
+                {
+                    // Writing to `String` never fails
+                    let _ = handler.render_report(&mut output, error.as_ref());
                 }
+                utils::print_and_flush(stderr, &output);
                 CliRunResult::FormatFailed
             }
         }

apps/oxfmt/test/cli/stdin/0.snap.md

@@ -11,6 +11,7 @@ oxfmt --stdin-filepath test.ts
   - input.graphql
   - input.rb
   - input.ts
+  - invalid.js
 ```
 
 # Result

apps/oxfmt/test/cli/stdin/1.snap.md

@@ -11,6 +11,7 @@ oxfmt --stdin-filepath test.graphql
   - input.graphql
   - input.rb
   - input.ts
+  - invalid.js
 ```
 
 # Result

apps/oxfmt/test/cli/stdin/2.snap.md

@@ -11,6 +11,7 @@ oxfmt --stdin-filepath test.rb
   - input.graphql
   - input.rb
   - input.ts
+  - invalid.js
 ```
 
 # Result

apps/oxfmt/test/cli/stdin/3.snap.md

@@ -0,0 +1,39 @@
+# Input
+
+## Command
+```
+oxfmt --stdin-filepath invalid.js
+```
+
+## File tree
+```
+- fixtures/ <CWD>
+  - input.graphql
+  - input.rb
+  - input.ts
+  - invalid.js
+```
+
+# Result
+
+## Exit code
+2
+
+## stdout
+```
+
+```
+
+## stderr
+```
+
+  x Expected `}` but found `EOF`
+   ,-[invalid.js:2:1]
+ 1 | class {
+   :       |
+   :       `-- Opened here
+   `----
+```
+
+## File changes
+No changes

apps/oxfmt/test/cli/stdin/fixtures/invalid.js

@@ -0,0 +1 @@
+class {

apps/oxfmt/test/cli/stdin/options.json

@@ -1,5 +1,6 @@
 [
   { "args": ["--stdin-filepath", "test.ts"], "stdin": "input.ts" },
   { "args": ["--stdin-filepath", "test.graphql"], "stdin": "input.graphql" },
-  { "args": ["--stdin-filepath", "test.rb"], "stdin": "input.rb" }
+  { "args": ["--stdin-filepath", "test.rb"], "stdin": "input.rb" },
+  { "args": ["--stdin-filepath", "invalid.js"], "stdin": "invalid.js" }
 ]