[oden] Tolerate parse errors better

src/script/typescript.rs

@@ -57,6 +57,20 @@ fn format_swc_diagnostic(source_map: &SourceMap, diagnostic: &Diagnostic) -> Str
     }
 }
 
+fn diagnostics_to_parse_error<'a>(
+    name: &str,
+    source_map: &SourceMap,
+    diagnostics: impl Iterator<Item = &'a Diagnostic>,
+) -> Error {
+    Error::ParseError(
+        name.into(),
+        diagnostics
+            .map(|d| format_swc_diagnostic(source_map, d))
+            .collect::<Vec<_>>()
+            .join("\n\n"),
+    )
+}
+
 fn ensure_no_fatal_swc_diagnostics<'a>(
     name: &str,
     source_map: &SourceMap,
@@ -66,13 +80,10 @@ fn ensure_no_fatal_swc_diagnostics<'a>(
         .filter(|d| is_fatal_swc_diagnostic(d))
         .collect::<Vec<_>>();
     if !fatal_diagnostics.is_empty() {
-        Err(Error::ParseError(
-            name.into(),
-            fatal_diagnostics
-                .iter()
-                .map(|d| format_swc_diagnostic(source_map, d))
-                .collect::<Vec<_>>()
-                .join("\n\n"),
+        Err(diagnostics_to_parse_error(
+            name,
+            source_map,
+            fatal_diagnostics.into_iter(),
         ))
     } else {
         Ok(())
@@ -109,8 +120,12 @@ pub fn transpile_to_javascript(path: &str, input: String) -> Result<String> {
 
     let module = parser
         .parse_module()
-        .map_err(|e| e.into_diagnostic(&handler).emit())
-        .expect("failed to parse module.");
+        .map_err(|e| e.into_diagnostic(&handler))
+        .map_err(|mut e| {
+            e.emit();
+            let diagnostics = diagnostics_cell.borrow();
+            diagnostics_to_parse_error(path, &cm, diagnostics.iter())
+        })?;
 
     let globals = Globals::default();
     GLOBALS.set(&globals, || {