**Description:**
In the fast path, we don't even use the buffer.
```
Benchmarking es/lexer/cal-com
Benchmarking es/lexer/cal-com: Warming up for 3.0000 s
Benchmarking es/lexer/cal-com: Collecting 100 samples in estimated 5.5395 s (900 iterations)
Benchmarking es/lexer/cal-com: Analyzing
es/lexer/cal-com time: [6.1799 ms 6.2010 ms 6.2250 ms]
change: [-4.4027% -3.9504% -3.5372%] (p = 0.00 < 0.05)
Performance has improved.
Found 17 outliers among 100 measurements (17.00%)
4 (4.00%) high mild
13 (13.00%) high severe
```
**Description:**
We don't need to push a character at a time. This profiling result does not include improvements from
https://github.com/swc-project/swc/pull/9076.
```
Benchmarking es/lexer/cal-com
es/lexer/cal-com time: [6.4555 ms 6.4936 ms 6.5368 ms]
```
**Description:**
Coverage gets better if we generate fewer source map entries. This PR only fixes the issue for `"coverageProvider": "v8"`. Much more work is required for the default coverage provider I guess.
**Related issue:**
- #3854
**Description:**
This is a follow-up PR for https://github.com/swc-project/swc/pull/9062. This PR integrates swc-ecosystem-ci to publish pipeline. For faster debugging, I disabled the build process.
**Description:**
https://github.com/getsentry/rust-sourcemap/pull/91 should fix this
issue, but let's revert #9052 for now.
# Context
`swc_core` regressed.
Caught by https://github.com/vercel/next.js/pull/66902
```
⚠ Linting is disabled.
▲ Next.js 15.0.0-canary.34
✓ Checking validity of types
Creating an optimized production build ...
Panic: PanicInfo { payload: Any { .. }, message: Some(attempt to add with overflow), location: Location { file: "/Users/kdy1/.cargo/registry/src/index.crates.io-6f17d22bba15001f/sourcemap-8.0.1/src/encoder.rs", line: 89, col: 13 }, can_unwind: true, force_no_backtrace: false }
Backtrace: 0: backtrace::backtrace::libunwind::trace
at /Users/kdy1/.cargo/registry/src/index.crates.io-6f17d22bba15001f/backtrace-0.3.68/src/backtrace/libunwind.rs:93:5
backtrace::backtrace::trace_unsynchronized::<<backtrace::capture::Backtrace>::create::{closure#0}>
at /Users/kdy1/.cargo/registry/src/index.crates.io-6f17d22bba15001f/backtrace-0.3.68/src/backtrace/mod.rs:66:5
backtrace::backtrace::trace::<<backtrace::capture::Backtrace>::create::{closure#0}>
at /Users/kdy1/.cargo/registry/src/index.crates.io-6f17d22bba15001f/backtrace-0.3.68/src/backtrace/mod.rs:53:14
<backtrace::capture::Backtrace>::create
at /Users/kdy1/.cargo/registry/src/index.crates.io-6f17d22bba15001f/backtrace-0.3.68/src/capture.rs:176:9
<backtrace::capture::Backtrace>::new
at /Users/kdy1/.cargo/registry/src/index.crates.io-6f17d22bba15001f/backtrace-0.3.68/src/capture.rs:140:22
1: next_swc_napi::init::{closure#0}
at packages/next-swc/crates/napi/src/lib.rs:85:29
2: <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call
at /rustc/6f3df08aadf71e8d4bf7e49f5dc10dfa6f254cb4/library/alloc/src/boxed.rs:2077:9
std::panicking::rust_panic_with_hook
at /rustc/6f3df08aadf71e8d4bf7e49f5dc10dfa6f254cb4/library/std/src/panicking.rs:799:13
3: std::panicking::begin_panic_handler::{{closure}}
at /rustc/6f3df08aadf71e8d4bf7e49f5dc10dfa6f254cb4/library/std/src/panicking.rs
```
**Description:**
TsPropertySignature can not have params, type params, or an initializer.
**BREAKING CHANGE:**
Yes. Any users looking into these fields should stop - they are always empty.
---------
Co-authored-by: 강동윤 (Donny) <kdy1997.dev@gmail.com>
