check ascii_only first

Author: ahaoboy

crates/swc_ecma_codegen/src/lib.rs

@@ -4285,7 +4285,9 @@ fn get_quoted_utf16(v: &str, ascii_only: bool, target: EsVersion) -> String {
                     // to make sure we output unicode that is safe for the target
                     // Es5 does not support code point escapes and so surrograte formula must be
                     // used
-                    if target <= EsVersion::Es5 {
+                    if !ascii_only {
+                        let _ = write!(buf, "{}", c);
+                    } else if target <= EsVersion::Es5 {
                         // https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
                         let h = ((c as u32 - 0x10000) / 0x400) + 0xd800;
                         let l = (c as u32 - 0x10000) % 0x400 + 0xdc00;