Update ast.zig

src/ast.zig

@@ -155,8 +155,9 @@ pub const NameMinifier = struct {
     head: std.ArrayList(u8),
     tail: std.ArrayList(u8),
 
-    pub const default_head = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_$";
-    pub const default_tail = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_$";
+    // Characters ordered by frequency of use in JavaScript code for better gzip compression
+    pub const default_head: [54]u8 align(64) = "etnriaoscludfpmhg_vybxSCwTEDOkAjMNPFILRzBVHUWGKqJYXZQ$".*;
+    pub const default_tail: [64]u8 align(64) = "etnriaoscludfpmhg_vybxSCwTEDOkAjMNPFILRzBVHUWGKqJYXZQ$1024368579".*;
 
     pub fn init(allocator: std.mem.Allocator) NameMinifier {
         return .{

src/renamer.zig

@@ -814,6 +814,7 @@ pub const ExportRenamer = struct {
     pub fn clearRetainingCapacity(this: *ExportRenamer) void {
         this.used.clearRetainingCapacity();
         this.string_buffer.reset();
+        this.count = 0;
     }
 
     pub fn deinit(this: *ExportRenamer) void {