Reduce search-index.js size

src/librustdoc/Cargo.toml

@@ -9,6 +9,6 @@ path = "lib.rs"
 
 [dependencies]
 pulldown-cmark = { version = "0.1.2", default-features = false }
-minifier = "0.0.20"
+minifier = "0.0.21"
 tempfile = "3"
 parking_lot = "0.6.4"

src/librustdoc/html/render.rs

@@ -1223,7 +1223,10 @@ fn write_minify_replacer<W: Write>(dst: &mut W,
                                    -> io::Result<()> {
     if enable_minification {
         writeln!(dst, "{}",
-                 minifier::js::minify_and_replace_keywords(contents, keywords_to_replace))
+                 minifier::js::minify_and_replace_keywords(contents, keywords_to_replace)
+                              .apply(minifier::js::clean_tokens)
+                              .apply(minifier::js::aggregate_strings)
+                              .to_string())
     } else {
         writeln!(dst, "{}", contents)
     }