BREAKING: remove "emit" and "map" from deno info output (#25468)

The map field has been empty for years now and we don't want the emit
file to be exposed so it allows us to iterate on making the cache
faster. Additionally, it's racy/unreliable to rely on this information.
Instead, people should emit the TS files themselves using tools like
deno_emit, typescript, esbuild, etc.

Closes https://github.com/denoland/deno/issues/17703

1 files changed, 27 insertions, 0 deletions

diff --git a/cli/util/path.rs b/cli/util/path.rs
index 804b26f65..6f09cf1ea 100644
--- a/cli/util/path.rs
+++ b/cli/util/path.rs
@@ -42,6 +42,21 @@ pub fn get_extension(file_path: &Path) -> Option<String> {
     .map(|e| e.to_lowercase());
 }
 
+pub fn specifier_has_extension(
+  specifier: &ModuleSpecifier,
+  searching_ext: &str,
+) -> bool {
+  let Some((_, ext)) = specifier.path().rsplit_once('.') else {
+    return false;
+  };
+  let searching_ext = searching_ext.strip_prefix('.').unwrap_or(searching_ext);
+  debug_assert!(!searching_ext.contains('.')); // exts like .d.ts are not implemented here
+  if ext.len() != searching_ext.len() {
+    return false;
+  }
+  ext.eq_ignore_ascii_case(searching_ext)
+}
+
 pub fn get_atomic_dir_path(file_path: &Path) -> PathBuf {
   let rand = gen_rand_path_component();
   let new_file_name = format!(
@@ -378,6 +393,18 @@ mod test {
   }
 
   #[test]
+  fn test_specifier_has_extension() {
+    fn get(specifier: &str, ext: &str) -> bool {
+      specifier_has_extension(&ModuleSpecifier::parse(specifier).unwrap(), ext)
+    }
+
+    assert!(get("file:///a/b/c.ts", "ts"));
+    assert!(get("file:///a/b/c.ts", ".ts"));
+    assert!(!get("file:///a/b/c.ts", ".cts"));
+    assert!(get("file:///a/b/c.CtS", ".cts"));
+  }
+
+  #[test]
   fn test_to_percent_decoded_str() {
     let str = to_percent_decoded_str("%F0%9F%A6%95");
     assert_eq!(str, "🦕");