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fix(es/minifier): Don't drop unused properties of top-level vars (#7638)

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**Related issue:**

 - Closes #7635.
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Donny/강동윤 2023-07-07 13:07:13 +09:00 committed by GitHub
parent e80c695c89
commit 19ba714ea1
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3 changed files with 8 additions and 1 deletions
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4
crates/swc_ecma_minifier/src/compress/optimize/unused.rs
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@ -835,6 +835,10 @@ impl Optimizer<'_> {
return None; return None;
} }
if self.ctx.top_level && !self.options.top_level() {
return None;
}
let name = v.name.as_ident()?; let name = v.name.as_ident()?;
let obj = v.init.as_mut()?.as_mut_object()?; let obj = v.init.as_mut()?.as_mut_object()?;

1
crates/swc_ecma_minifier/tests/fixture/projects/wmr/archive-1/chunks/index.bf24abaa/output.js
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@ -1,5 +1,6 @@
import { s as style, m } from "../index.f66dda46.js"; import { s as style, m } from "../index.f66dda46.js";
const process = { const process = {
browser: !0,
env: { env: {
FOO: "bar", FOO: "bar",
OVERRIDE: "11", OVERRIDE: "11",

4
crates/swc_ecma_minifier/tests/fixture/projects/wmr/archive-1/chunks/index.ddc4110d/output.js
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@ -1,5 +1,7 @@
import { s as style, y, m } from "../index.f66dda46.js"; import { s as style, y, m } from "../index.f66dda46.js";
const styles = {}; const styles = {
about: "about_migxty"
};
function About({ query, title }) { function About({ query, title }) {
return y(()=>(console.log("Mounted About: ", title), ()=>{ return y(()=>(console.log("Mounted About: ", title), ()=>{
console.log("Unmounting About: ", title); console.log("Unmounting About: ", title);