**Description:**
This implements something similar to `__snapshots__` of `jest`. Instead of storing the expected result as a string literal, we now store it in `$crate/tests/__swc_snapshots__/$path_to_test__$test_name.js`.
**Related issue:**
- Closes#4509
**Description:**
## Bugfixes
- Exported `let`/`var` declarations in TypeScript namespaces should be mutable.
- Fix missing declaration of complex exported patterns in TypeScript namespaces.
- Preserve concrete TS namespaces.
## New Features
- Introducing [Verbatim Module Syntax](https://www.typescriptlang.org/tsconfig#verbatimModuleSyntax).
- Enum value will now be inlined whenever possible within a single module, optimizing runtime performance.
- Constant enums will be automatically eliminated when feasible, This can reduce bundle size.
- Added support for cross-referencing enum values.
## Deprecated
`TsEnumConfig` is deprecated
- The `treat_const_enum_as_enum` transform option is deprecated.
- The `ts_enum_is_readonly` assumption option is deprecated.
**BREAKING CHANGE:**
TypeScript Config is changed.
**Related issue:**
- Closes#5197
- Closes#5259
- Closes#7177
- Closes#7453
- Closes#7676
- Closes#7681
- Closes#7791
- Closes#7961
- We don't need a list of bindings to check if an identifier is unresolved.
- Checking if an identifier is unresolved is now one CPU instruction.
- Previously it was one hashmap operation.
- This PR also improves performance, by removing the hashmaps mentioned above.
swc_ecma_transforms_base:
- `resolver`: Handle some typescript nodes.
swc_ecma_transforms_typescript:
- `strip`: Use identifier span hygiene information for stripping types.
