fix(es/loader): Make tsc resolver work for bare specifier (#8550)

**Description:**

From the typescript
[baseUrl](https://www.typescriptlang.org/docs/handbook/modules/reference.html#baseurl)
doc: When using bare specifiers (module specifiers that don’t begin with
./, ../, or /), baseUrl has a higher precedence than node_modules
package lookups.

In the current tsc resolver implementation, when resolving bare module
specifiers, baseUrl was not used except for `paths`, this cause the
belowing resolution failed, but it worked when used in typescript
project.

`tsconfig.json` / `.swcrc`:
```json
{
    baseUrl: "."
    paths: {
        "@common/*": ["src/common/*"]
    }
}
```

File structure:
- ./src/common/helper.ts
- ./src/index.ts


./src/index.ts content:
```ts
 // tsc can resolve this, but tsc resolver cannot
import sth from "src/common/helper"
```

Author: XHMM

crates/swc_ecma_loader/src/resolvers/tsc.rs

@@ -310,7 +310,14 @@ where
             }
         }
 
-        if let Ok(v) = self.invoke_inner_resolver(&self.base_url_filename, module_specifier) {
+        let path = self.base_url.join(module_specifier);
+        #[cfg(windows)]
+        let path_string: String = path.to_string_lossy().replace("\\", "/");
+        #[cfg(not(windows))]
+        let path_string: String = path.to_string_lossy().to_string();
+
+        // https://www.typescriptlang.org/docs/handbook/modules/reference.html#baseurl
+        if let Ok(v) = self.invoke_inner_resolver(base, path_string.as_str()) {
             return Ok(v);
         }
 

crates/swc_ecma_loader/tests/tsc_resolver.rs

@@ -97,6 +97,98 @@ fn pattern_1() {
     }
 }
 
+#[test]
+fn base_url_works_for_bare_specifier() {
+    let mut map = HashMap::default();
+    map.insert("./src/common/helper".to_string(), "helper".to_string());
+
+    let r = TsConfigResolver::new(
+        TestResolver(map),
+        ".".into(),
+        vec![("@common/*".into(), vec!["src/common/*".into()])],
+    );
+
+    {
+        let resolved = r
+            .resolve(&FileName::Anon, "@common/helper")
+            .expect("should resolve");
+
+        assert_eq!(
+            resolved,
+            Resolution {
+                filename: FileName::Custom("helper".into()),
+                slug: None
+            }
+        );
+    }
+
+    {
+        let resolved = r
+            .resolve(&FileName::Anon, "src/common/helper")
+            .expect("should resolve");
+
+        assert_eq!(
+            resolved,
+            Resolution {
+                filename: FileName::Custom("helper".into()),
+                slug: None
+            }
+        );
+    }
+
+    {
+        let resolved = r
+            .resolve(&FileName::Anon, "./src/common/helper")
+            .expect("should resolve");
+
+        assert_eq!(
+            resolved,
+            Resolution {
+                filename: FileName::Custom("helper".into()),
+                slug: None
+            }
+        );
+    }
+}
+
+#[test]
+fn base_url_precedence() {
+    let mut map = HashMap::default();
+    map.insert("./jquery".to_string(), "jq in base url".to_string());
+    map.insert("jquery".to_string(), "jq in node module".to_string());
+    map.insert("react".to_string(), "react in node module".to_string());
+
+    let r = TsConfigResolver::new(TestResolver(map), ".".into(), vec![]);
+
+    {
+        let resolved = r
+            .resolve(&FileName::Anon, "jquery")
+            .expect("should resolve from base url");
+
+        assert_eq!(
+            resolved,
+            Resolution {
+                filename: FileName::Custom("jq in base url".into()),
+                slug: None
+            }
+        );
+    }
+
+    {
+        let resolved = r
+            .resolve(&FileName::Anon, "react")
+            .expect("should resolve from node modules");
+
+        assert_eq!(
+            resolved,
+            Resolution {
+                filename: FileName::Custom("react in node module".into()),
+                slug: None
+            }
+        );
+    }
+}
+
 struct TestResolver(AHashMap<String, String>);
 
 impl Resolve for TestResolver {