fix(semantic): fix incorrect semantic example (#2198)

crates/oxc_semantic/examples/simple.rs

@@ -1,5 +1,6 @@
-use std::{env, path::Path};
+use std::{env, path::Path, sync::Arc};
 
+use itertools::Itertools;
 use oxc_allocator::Allocator;
 use oxc_parser::Parser;
 use oxc_semantic::SemanticBuilder;
@@ -7,17 +8,31 @@ use oxc_span::SourceType;
 
 // Instruction:
 // create a `test.js`,
-// run `cargo run -p oxc_query --example simple`
+// run `cargo run -p oxc_semantic --example simple`
-// or `cargo watch -x "run -p oxc_query --example simple"`
+// or `just watch "run -p oxc_semantic --example simple"`
 
 fn main() {
     let name = env::args().nth(1).unwrap_or_else(|| "test.js".to_string());
     let path = Path::new(&name);
-    let source_text = std::fs::read_to_string(path).unwrap_or_else(|_| panic!("{name} not found"));
+    let source_text =
+        Arc::new(std::fs::read_to_string(path).unwrap_or_else(|_| panic!("{name} not found")));
     let allocator = Allocator::default();
     let source_type = SourceType::from_path(path).unwrap();
     let ret = Parser::new(&allocator, &source_text, source_type).parse();
 
     let program = allocator.alloc(ret.program);
-    SemanticBuilder::new(&source_text, source_type).with_trivias(ret.trivias).build(program);
+    let semantic = SemanticBuilder::new(&source_text, source_type)
+        .with_check_syntax_error(true)
+        .with_trivias(ret.trivias)
+        .build(program);
+
+    if !semantic.errors.is_empty() {
+        let error_message: String = semantic
+            .errors
+            .into_iter()
+            .map(|error| error.with_source_code(Arc::clone(&source_text)).to_string())
+            .join("\n\n");
+
+        panic!("Semantic analysis failed:\n\n{error_message}",);
+    }
 }