Merge branch 'main' into jsx

gengo/src/generated.rs

@@ -20,8 +20,16 @@ impl Generated {
         self.globs.iter().any(|g| g.matches_path(filepath.as_ref()))
     }
 
-    fn is_generated_with_read<P: AsRef<Path>>(&self, _filepath: P, _contents: &[u8]) -> bool {
-        false
+    fn is_generated_with_read<P: AsRef<Path>>(&self, _filepath: P, contents: &[u8]) -> bool {
+        self.likely_minified(contents)
+    }
+
+    fn likely_minified(&self, contents: &[u8]) -> bool {
+        // NOTE If the first 10 lines are really long, it's probably minified.
+        contents
+            .split(|&b| b == b'\n')
+            .take(10)
+            .any(|line| line.len() > 250)
     }
 
     fn globs() -> Vec<Pattern> {
@@ -52,4 +60,13 @@ mod tests {
         let generated = Generated::new();
         assert_eq!(generated.is_generated_no_read(filepath), expected);
     }
+
+    #[test]
+    fn test_likely_minified() {
+        let generated = Generated::new();
+        let header: Vec<u8> = b"/*!\n  * This is my license etc etc\n */".to_vec();
+        let contents = b"console.log('hello, world!');".repeat(50);
+        let contents = [header, contents].concat();
+        assert!(generated.likely_minified(&contents));
+    }
 }