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perf(transformer/regexp): do not store parsed regexp #10748

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Merged
graphite-app merged 1 commit into from
May 2, 2025
Merged

perf(transformer/regexp): do not store parsed regexp #10748

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10 changes: 4 additions & 6 deletions crates/oxc_transformer/src/regexp/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -137,11 +137,12 @@ impl<'a> RegExp<'a, '_> {
return;
}

let literal_span = regexp.span;
let owned_pattern;
let pattern = match &mut regexp.regex.pattern {
RegExpPattern::Raw(raw) => {
#[expect(clippy::cast_possible_truncation)]
let pattern_len = raw.len() as u32;
let literal_span = regexp.span;
let pattern_span_start = literal_span.start + 1; // +1 to skip the opening `/`
let flags_span_start = pattern_span_start + pattern_len + 1; // +1 to skip the closing `/`
let flags_text = Span::new(flags_span_start, literal_span.end)
Expand All @@ -155,11 +156,8 @@ impl<'a> RegExp<'a, '_> {
ctx,
) {
Ok(pattern) => {
regexp.regex.pattern = RegExpPattern::Pattern(ctx.alloc(pattern));
let RegExpPattern::Pattern(pattern) = &regexp.regex.pattern else {
unreachable!()
};
pattern
owned_pattern = Some(pattern);
owned_pattern.as_ref().unwrap()
}
Err(error) => {
regexp.regex.pattern = RegExpPattern::Invalid(raw);
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