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Same variables in switch/case is corrupts code #12148
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I get this output: it's different, but still broken (it should be window.test = function () {
var e = "TEST";
switch (_e) {
case "TEST":
var _e = [];
_e.push('111');
alert(_e);
break;
default:
alert('666');
break;
}
}; |
Hey @mixalbl4-127! We really appreciate you taking the time to report an issue. The collaborators on this project attempt to help as many people as possible, but we're a limited number of volunteers, so it's possible this won't be addressed swiftly. If you need any help, or just have general Babel or JavaScript questions, we have a vibrant Slack community that typically always has someone willing to help. You can sign-up here for an invite." |
BEFORE YOU SUBMIT please read the following:
I'm submitting a bug report
Webpack Version:
4.44.2 - latest
Babel Core Version:
7.11.6 - latest
Babel Loader Version:
8.1.0 - latest
Please tell us about your environment:
Linux Mint 18.3
Current behavior:
index.js
converts to:
dist/out.js
const e = "TEST";
was removed!Expected/desired behavior:
since this variable is used in the switch, it should not be removed
webpack.config.js
Same issue for terser: assignment in switch statement corrupts program terser/terser#445
Same issue for vscode: Avoid shadowed variable declarations microsoft/vscode#80311
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