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Minifier converts array to string value incorrectly when void 0 is in array #8706

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hyp3rflow opened this issue Mar 7, 2024 · 1 comment · Fixed by #8733
Closed

Minifier converts array to string value incorrectly when void 0 is in array #8706

hyp3rflow opened this issue Mar 7, 2024 · 1 comment · Fixed by #8733
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@hyp3rflow
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Describe the bug

String representation of array should convert null or undefined to empty string.
Currently raw null or undefined is handled well, but with void 0 element, minifier cannot handle correctly.

Input code

console.log([void 0] + 'swc');

Config

No response

Playground link (or link to the minimal reproduction)

https://play.swc.rs/?version=1.4.6-nightly-20240307.1&code=H4sIAAAAAAAAA0vOzyvOz0nVy8lP14guy89MUTCIVdBWUC8uT1bXtOYCAGbAdn0fAAAA&config=H4sIAAAAAAAAA32UO3LjMAyG%2B5zCozrFjostcoDtcgYOTYIyvXxoCNCxJuO7L0TJj40hdRI%2B%2FAAJgPh%2B2%2B26E5ruY%2FfNn%2Fwz6IJQ7v9swTGRvrClAxM1muIH6t5v9IQTcjogNNN1Jh3p0gM1Fe5%2F7feLogs5I9wUiy365N34nNPkOBRAfLKxlUPWCInwf%2F3CSv6aAJX6bD%2FkHECnDaI0Kp8IeihSYJND0AOCOusiRJlOqovHLKWYYCWwaih5EHmynnxOnPOVWtBWmWxBQL6AIX8GSca5WJaQryfcp2ELh9r3rc8%2F1HDWoWoScsKltYRPK0Q9Zo%2BkXE1SCWe4UoMZLsX9qfROFaBa0qvulH1a6clfAK5A0IhJR5DiNg%2FH87SmdptKnxyPLI0C5%2FmWbpmg56Iq751Q2akyUMhL3Sxgq4GpskY6zoJXyofeggLneFaE0PjlyRylpDQOkJ0AuL%2FaSVM1A3V%2FhSt8ehAb%2BA%2FfkuQBWzyipuM6xTEecthIEIGO2W44cCsor%2BPCW%2BIyrPOaLPBogBVdKjbwugT4AVBWoe3Ll9ng58ERVR%2Fy4bEmFofrfQ9HnfrHe59X8dvi0MVsa4PLkp%2F6O6%2Fm393D6baF7wfvPH7elC3p9R%2BoYzQdMAYAAA%3D%3D

SWC Info output

No response

Expected behavior

console.log('swc');

Actual behavior

console.log('undefinedswc');

Version

1.4.5

Additional context

No response

@hyp3rflow hyp3rflow added the C-bug label Mar 7, 2024
@kdy1 kdy1 self-assigned this Mar 7, 2024
@kdy1 kdy1 added this to the Planned milestone Mar 7, 2024
kdy1 added a commit that referenced this issue Mar 12, 2024
@kdy1 kdy1 modified the milestones: Planned, v1.4.7 Mar 13, 2024
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swc-bot commented Apr 12, 2024

This closed issue has been automatically locked because it had no new activity for a month. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.

@swc-project swc-project locked as resolved and limited conversation to collaborators Apr 12, 2024
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