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fix(es/minifier): Don't remove exports (#7856)

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Lewis Liu 2023-08-24 21:47:42 -07:00 committed by GitHub
parent 5ae2e810d8
commit ae8cd9430d
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5 changed files with 18 additions and 0 deletions
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4
crates/swc_ecma_minifier/src/compress/optimize/mod.rs
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@ -318,6 +318,10 @@ impl From<&Function> for FnMetadata {
impl Optimizer<'_> { impl Optimizer<'_> {
fn may_remove_ident(&self, id: &Ident) -> bool { fn may_remove_ident(&self, id: &Ident) -> bool {
if self.ctx.is_exported {
return false;
}
if id.span.ctxt != self.marks.top_level_ctxt { if id.span.ctxt != self.marks.top_level_ctxt {
return true; return true;
} }

4
crates/swc_ecma_minifier/tests/fixture/pr/7856/1/input.js Normal file
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@ -0,0 +1,4 @@
const a = () => "";
const b = {};
export const c = a;
b.c = c;

1
crates/swc_ecma_minifier/tests/fixture/pr/7856/1/output.js Normal file
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@ -0,0 +1 @@
export const c = ()=>"";

5
crates/swc_ecma_minifier/tests/fixture/pr/7856/2/input.js Normal file
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@ -0,0 +1,5 @@
export const a = 4;
export const b = 16;
export const c = 5;
export const d = () => a;

4
crates/swc_ecma_minifier/tests/fixture/pr/7856/2/output.js Normal file
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@ -0,0 +1,4 @@
export const a = 4;
export const b = 16;
export const c = 5;
export const d = ()=>4;