swc_ecma_codegen:
- Don't panic on `Pat::Invalid`.
- Fix codegen of unary minus. (#2213)
swc_ecma_minifier:
- Remove identifier of function expressions if a variable with same name exists.
- `sequences`: Merge into the argument of a throw statement.
- Use `ignore_return_value` for `void` expressions.
- Improve inlining.
- Drop last `return` if the return value is not used.
- `sequences`: Merge `c++; use(c)` as `use(++c)`.
- `sequences`: Merge assignments with an operator.
- `comparisons`: Optimize the comparison operator if type is equivalent.
- Fix `negate_cost`.
- `unused`: Fix order or variable initalizer when variables are dropped.
- Fix `top_retain` option.
- `if_return`: Don't merge nested if it's wrong to do so. (#2214)
- Fix negation of `if_return`.
swc_ecma_minifier:
- Test mangler using execution test suite.
- `mangler`: Preserve `arguments`.
- `mangler`: Handle shorthand. (#2051)
- `mangler`: Handle object pattern properties.
- `precompress`: Don't drop function declarations if the variable with same name is in different scope. (#2011)
