Features

• improve escape analysis on lambda expression (798121c, 972b9f0, f4ae267, f5dbb67, 6961c57, d0e3f69, 1fefe3f, ea7829d, d147d5d)
• extend simplification of ternary expression (1b74549)
• drop extraneous whitespace during beautify of loop statements (668f966)
• support destructured shorthand for default parameter (2340fef)
• improve escape analysis on default parameter (6577d64)
• prune unreachable expressions in destrucuturing assignment (f67dd31, aae1fcd, 1ad830f, 0d350b7, 92c3fdd, a7e7865, 8926a2f)
• address call & member resolution quirks under Internet Explorer (ef5f7fc)
• extend keep_quoted_props over numeric keys (65adeba)

Bug Fixes

• class literal (0668fad, 902997b)
• default parameter (0c48b84)
• destructuring syntax (85968de)
• for await...of loop (64ebf6e)
• if statement (611abff)
• object literal (08391b8)
• optional chaining operator (4ba8b66, 7fac839)
• property accessor (f18804f)
• rest parameter (450aaba)