feat(es/codegen): Introduce SpanRewriter

[kdy1]

Description:

This PR is a retry of #10261 with generics.

The idea is that, we can conditionally execute code using a macro.

#[node_impl]
impl MacroNode for Number {
    fn emit(&mut self, emitter: &mut Macro) -> Result {
        let lo = only_new!(emitter.wr.get_pos());

        emitter.emit_num_lit_internal(self, false)?;

        let hi = only_new!(emitter.wr.get_pos());

        Ok(only_new!(Number {
            span: Span::new(lo, hi),
            ..self.clone()
        }))
    }
}

expands to

impl crate::Node for Number {
    fn emit_with<W, S>(&self, emitter: &mut crate::Emitter<'_, W, S>) -> crate::Result
    where
        W: crate::text_writer::WriteJs,
        S: swc_common::SourceMapper + swc_ecma_ast::SourceMapperExt,
    {
        {
            let lo = ();
            emitter.emit_num_lit_internal(self, false)?;
            let hi = ();
            Ok(())
        }
    }

    fn with_new_span<W, S>(&self, e: &mut crate::NodeEmitter<'_, W, S>) -> crate::Result<Self>
    where
        W: crate::text_writer::SpannedWriteJs,
        S: swc_common::SourceMapper + swc_ecma_ast::SourceMapperExt,
    {
            let lo = emitter.wr.get_pos();
            emitter.emit_num_lit_internal(self, false)?;
            let hi = emitter.wr.get_pos();
            Ok(Number {
	            span: Span::new(lo, hi),
            	..self.clone()
        	})
    }
}

Related issue:

• Closes rspack: ES codegen that modifies span to emulate codegen + reparse #9976

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Latest commit: fb1d187

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[codspeed-hq]

CodSpeed Performance Report

Merging #10349 will degrade performances by 2.4%

_{Comparing kdy1/codegen-generic (fb1d187) with main (a0e89f0)}

Summary

⚡ 1 improvements
❌ 1 regressions
✅ 150 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
❌	deserialization of serde	2.4 µs	2.4 µs	-2.4%
⚡	serialization of serde	2.8 µs	2.7 µs	+3.28%