diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 41ffbd4df5c..19d74390d57 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -1,6 +1,6 @@
 name: Lint
 
-on: [push]
+on: [push, pull_request]
 
 jobs:
   lint:
diff --git a/ecmascript/codegen/tests/references/15a12468ff312d51.js b/ecmascript/codegen/tests/references/15a12468ff312d51.js
index af1aad6c18e..4c94075c1e1 100644
--- a/ecmascript/codegen/tests/references/15a12468ff312d51.js
+++ b/ecmascript/codegen/tests/references/15a12468ff312d51.js
@@ -1 +1 @@
-622141790000000000000000;
+602214179000000000000000;
diff --git a/ecmascript/parser/src/lexer/number.rs b/ecmascript/parser/src/lexer/number.rs
index 6641e0713d5..3f510ef843e 100644
--- a/ecmascript/parser/src/lexer/number.rs
+++ b/ecmascript/parser/src/lexer/number.rs
@@ -87,13 +87,14 @@ impl<'a, I: Input> Lexer<'a, I> {
                 debug_assert!(self.cur().unwrap().is_digit(10));
             }
 
+            let mut raw = Raw(Some(String::new()));
             // Read numbers after dot
-            let dec_val = self.read_int(10, 0, &mut Raw(None))?;
+            let dec_val = self.read_int(10, 0, &mut raw)?;
             let mut s = String::new();
             write!(s, "{}.", val).unwrap();
 
-            if let Some(ref n) = dec_val {
-                write!(s, "{}", n).unwrap();
+            if let Some(..) = dec_val {
+                s.push_str(&raw.0.as_ref().unwrap());
             }
 
             val = s.parse().expect("failed to parse float using rust's impl");
@@ -402,6 +403,11 @@ mod tests {
         debug_assert_eq!(77777777777777777.1f64, num("77777777777777777.1"))
     }
 
+    #[test]
+    fn issue_480() {
+        debug_assert_eq!(9.09, num("9.09"))
+    }
+
     #[test]
     fn num_legacy_octal() {
         debug_assert_eq!(0o12 as f64, num("0012"));
diff --git a/ecmascript/parser/src/lexer/tests.rs b/ecmascript/parser/src/lexer/tests.rs
index 7a3dcdf9aa7..b490d5c7a04 100644
--- a/ecmascript/parser/src/lexer/tests.rs
+++ b/ecmascript/parser/src/lexer/tests.rs
@@ -1088,6 +1088,36 @@ fn issue_401() {
     );
 }
 
+#[test]
+fn issue_481() {
+    assert_eq!(
+        lex_tokens(
+            crate::Syntax::Es(crate::EsConfig {
+                jsx: true,
+                ..Default::default()
+            }),
+            "<span> {foo}</span>"
+        ),
+        vec![
+            Token::JSXTagStart,
+            Token::JSXName {
+                name: "span".into()
+            },
+            Token::JSXTagEnd,
+            JSXText { raw: " ".into() },
+            LBrace,
+            Word(Word::Ident("foo".into())),
+            RBrace,
+            JSXTagStart,
+            BinOp(Div),
+            JSXName {
+                name: "span".into()
+            },
+            JSXTagEnd,
+        ]
+    );
+}
+
 #[bench]
 fn lex_colors_js(b: &mut Bencher) {
     b.bytes = include_str!("../../colors.js").len() as _;
diff --git a/ecmascript/transforms/src/modules/amd.rs b/ecmascript/transforms/src/modules/amd.rs
index fcb251aa037..b3157490006 100644
--- a/ecmascript/transforms/src/modules/amd.rs
+++ b/ecmascript/transforms/src/modules/amd.rs
@@ -7,7 +7,7 @@ use crate::{
     util::{prepend_stmts, var::VarCollector, DestructuringFinder, ExprFactory},
 };
 use ast::*;
-use hashbrown::HashSet;
+use fxhash::FxHashSet;
 use serde::{Deserialize, Serialize};
 use std::iter;
 use swc_atoms::js_word;
@@ -55,7 +55,7 @@ impl Fold<Module> for Amd {
         }
 
         let mut exports = vec![];
-        let mut initialized = HashSet::default();
+        let mut initialized = FxHashSet::default();
         let mut export_alls = vec![];
         let mut emitted_esmodule = false;
         let mut has_export = false;
diff --git a/ecmascript/transforms/src/modules/common_js.rs b/ecmascript/transforms/src/modules/common_js.rs
index e712c689816..e487dd53c22 100644
--- a/ecmascript/transforms/src/modules/common_js.rs
+++ b/ecmascript/transforms/src/modules/common_js.rs
@@ -8,7 +8,7 @@ use crate::{
     util::{var::VarCollector, DestructuringFinder, ExprFactory},
 };
 use ast::*;
-use hashbrown::HashSet;
+use fxhash::FxHashSet;
 use swc_atoms::js_word;
 use swc_common::{Fold, FoldWith, VisitWith, DUMMY_SP};
 
@@ -40,7 +40,7 @@ impl Fold<Vec<ModuleItem>> for CommonJs {
         }
 
         let mut exports = vec![];
-        let mut initialized = HashSet::default();
+        let mut initialized = FxHashSet::default();
         let mut export_alls = vec![];
 
         for item in items {
diff --git a/ecmascript/transforms/src/modules/umd.rs b/ecmascript/transforms/src/modules/umd.rs
index 7878d9d986d..6aef2bcf2d6 100644
--- a/ecmascript/transforms/src/modules/umd.rs
+++ b/ecmascript/transforms/src/modules/umd.rs
@@ -9,7 +9,7 @@ use crate::{
     util::{prepend_stmts, var::VarCollector, DestructuringFinder, ExprFactory},
 };
 use ast::*;
-use hashbrown::HashSet;
+use fxhash::FxHashSet;
 use std::sync::Arc;
 use swc_atoms::js_word;
 use swc_common::{Fold, FoldWith, Mark, SourceMap, VisitWith, DUMMY_SP};
@@ -53,7 +53,7 @@ impl Fold<Module> for Umd {
         }
 
         let mut exports = vec![];
-        let mut initialized = HashSet::default();
+        let mut initialized = FxHashSet::default();
         let mut export_alls = vec![];
         let mut emitted_esmodule = false;
         let mut has_export = false;
diff --git a/ecmascript/transforms/src/modules/util.rs b/ecmascript/transforms/src/modules/util.rs
index 6888de94200..6b25ec8aaf4 100644
--- a/ecmascript/transforms/src/modules/util.rs
+++ b/ecmascript/transforms/src/modules/util.rs
@@ -1,5 +1,6 @@
 use crate::util::{undefined, DestructuringFinder, ExprFactory};
 use ast::*;
+use fxhash::FxHashSet;
 use hashbrown::{hash_map::Entry, HashMap, HashSet};
 use indexmap::IndexMap;
 use inflector::Inflector;
@@ -718,7 +719,7 @@ pub(super) fn use_strict() -> Stmt {
 /// ```js
 /// exports.default = exports.foo = void 0;
 /// ```
-pub(super) fn initialize_to_undefined(exports: Ident, initialized: HashSet<JsWord>) -> Box<Expr> {
+pub(super) fn initialize_to_undefined(exports: Ident, initialized: FxHashSet<JsWord>) -> Box<Expr> {
     let mut rhs = undefined(DUMMY_SP);
 
     for name in initialized.into_iter() {
diff --git a/ecmascript/transforms/src/react/jsx.rs b/ecmascript/transforms/src/react/jsx.rs
index a20b95d2d21..b90805c946c 100644
--- a/ecmascript/transforms/src/react/jsx.rs
+++ b/ecmascript/transforms/src/react/jsx.rs
@@ -172,6 +172,7 @@ impl Jsx {
                 if s.value.is_empty() {
                     return None;
                 }
+
                 Lit::Str(s).as_arg()
             }
             JSXElementChild::JSXExprContainer(JSXExprContainer {
@@ -392,11 +393,14 @@ fn to_prop_name(n: JSXAttrName) -> PropName {
 }
 
 fn jsx_text_to_str(t: JsWord) -> JsWord {
+    if t == *" " {
+        return t;
+    }
     if !t.contains(' ') && !t.contains('\n') {
         return t;
     }
 
-    let mut buf = String::new();
+    let mut buf = String::from("");
     for s in t.replace("\n", " ").split_ascii_whitespace() {
         buf.push_str(s);
         buf.push(' ');
diff --git a/ecmascript/transforms/src/react/jsx/tests.rs b/ecmascript/transforms/src/react/jsx/tests.rs
index 8a27ee1d6a3..a5878639e58 100644
--- a/ecmascript/transforms/src/react/jsx/tests.rs
+++ b/ecmascript/transforms/src/react/jsx/tests.rs
@@ -1066,3 +1066,17 @@ test!(
 var _react = _interopRequireDefault(require('react'));
 _react.default.createElement('div', null);"
 );
+
+test!(
+    ::swc_ecma_parser::Syntax::Es(::swc_ecma_parser::EsConfig {
+        jsx: true,
+        ..Default::default()
+    }),
+    |_| tr(Options {
+        use_builtins: true,
+        ..Default::default()
+    }),
+    issue_481,
+    "<span> {foo}</span>;",
+    "React.createElement('span', null, ' ', foo);"
+);