Closed hyp3rflow closed 5 months ago
According to the step 2 of Number::toString spec, both signed zero should be regarded as normal zero resulting in "0".
Number::toString
"0"
Currently minifier evaluates correctly with simple program like (-0).toString(), but much complex example like below is not handled correctly.
(-0).toString()
console.log(-0 + [])
{ "jsc": { "parser": { "syntax": "ecmascript", "jsx": false }, "target": "es5", "loose": false, "minify": { "compress": { "arguments": false, "arrows": true, "booleans": true, "booleans_as_integers": false, "collapse_vars": true, "comparisons": true, "computed_props": true, "conditionals": true, "dead_code": true, "directives": true, "drop_console": false, "drop_debugger": true, "evaluate": true, "expression": false, "hoist_funs": false, "hoist_props": true, "hoist_vars": false, "if_return": true, "join_vars": true, "keep_classnames": false, "keep_fargs": true, "keep_fnames": false, "keep_infinity": false, "loops": true, "negate_iife": true, "properties": true, "reduce_funcs": false, "reduce_vars": false, "side_effects": true, "switches": true, "typeofs": true, "unsafe": false, "unsafe_arrows": false, "unsafe_comps": false, "unsafe_Function": false, "unsafe_math": false, "unsafe_symbols": false, "unsafe_methods": false, "unsafe_proto": false, "unsafe_regexp": false, "unsafe_undefined": false, "unused": true, "const_to_let": true, "pristine_globals": true }, "mangle": { "toplevel": false, "keep_classnames": false, "keep_fnames": false, "keep_private_props": false, "ie8": false, "safari10": false } } }, "module": { "type": "commonjs" }, "minify": false, "isModule": false }
https://play.swc.rs/?version=1.5.24&code=H4sIAAAAAAAAA0vOzyvOz0nVy8lP19A1UNBWiI7VBAAUpZKNFAAAAA%3D%3D&config=H4sIAAAAAAAAA42VzW7bMAyA732KwOcdtsOAYg%2Bw255BUCzKUSaJhkilCYq8%2B2jFTtOGNnYJYn78ESmSen%2FZ7boj9d2v3bv8lY%2FRFoJy%2FxYJXTLbs0g66JOlvoSRu28LPdKEvI0ETXS9kY5tGYCbFf2c1buISLCoz7IUcvCXx4A9prEA0YNMpOKvJshMn%2B1nVvBtAlzqo3yPGMHmDWIsmZAZBiia4x5jtCOBOdmieJlOaksg1EJMsDI4MxYcVZ5d4IBZYj5TB9aZHh0oKBToOZxAM5NYYpZJ0lPyadjBvg5Du%2BQv1nCysVpWYsK5XYmcVvF6wEBsfM1aCW9wpQY3OBf3q2XwpgDXkp%2Ftjhjyyp38BZAKREuUbQLNb9Pw0k9r1n7TMmQvLcsXhUt%2Fa1lmGKSoJgSvVHaqDBQO2m0WcLWHqbK9dpwZr5SPggMD3kuvKK7pLXB%2F0ILyZQT0CpD7tV7rqhsw9ylc4dNAbODfkiXrDTZrJMuHdUqXtMe4ESABH9BtKMhVMK7jIlviPK7zmh1Ia4BTVSo18LwEZAAYTWzL8qk3ZDzEoxki7j%2FWxKxwvS%2FhZPPQ5v1hXzKOEU4Q19r4P0Zkk8rZTlNXL5P9NL3wqjWllcELP75%2FejMklZfltyXVJXT1IaHWk9NbIi2UMB%2Bp%2B9Bcno97pC7Qn8X8FuP6D4cPrcHnBgAA
No response
console.log("0")
console.log("-0")
1.5.24
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.
Describe the bug
According to the step 2 of
Number::toString
spec, both signed zero should be regarded as normal zero resulting in"0"
.Currently minifier evaluates correctly with simple program like
(-0).toString()
, but much complex example like below is not handled correctly.Input code
Config
Playground link (or link to the minimal reproduction)
https://play.swc.rs/?version=1.5.24&code=H4sIAAAAAAAAA0vOzyvOz0nVy8lP19A1UNBWiI7VBAAUpZKNFAAAAA%3D%3D&config=H4sIAAAAAAAAA42VzW7bMAyA732KwOcdtsOAYg%2Bw255BUCzKUSaJhkilCYq8%2B2jFTtOGNnYJYn78ESmSen%2FZ7boj9d2v3bv8lY%2FRFoJy%2FxYJXTLbs0g66JOlvoSRu28LPdKEvI0ETXS9kY5tGYCbFf2c1buISLCoz7IUcvCXx4A9prEA0YNMpOKvJshMn%2B1nVvBtAlzqo3yPGMHmDWIsmZAZBiia4x5jtCOBOdmieJlOaksg1EJMsDI4MxYcVZ5d4IBZYj5TB9aZHh0oKBToOZxAM5NYYpZJ0lPyadjBvg5Du%2BQv1nCysVpWYsK5XYmcVvF6wEBsfM1aCW9wpQY3OBf3q2XwpgDXkp%2Ftjhjyyp38BZAKREuUbQLNb9Pw0k9r1n7TMmQvLcsXhUt%2Fa1lmGKSoJgSvVHaqDBQO2m0WcLWHqbK9dpwZr5SPggMD3kuvKK7pLXB%2F0ILyZQT0CpD7tV7rqhsw9ylc4dNAbODfkiXrDTZrJMuHdUqXtMe4ESABH9BtKMhVMK7jIlviPK7zmh1Ia4BTVSo18LwEZAAYTWzL8qk3ZDzEoxki7j%2FWxKxwvS%2FhZPPQ5v1hXzKOEU4Q19r4P0Zkk8rZTlNXL5P9NL3wqjWllcELP75%2FejMklZfltyXVJXT1IaHWk9NbIi2UMB%2Bp%2B9Bcno97pC7Qn8X8FuP6D4cPrcHnBgAA
SWC Info output
No response
Expected behavior
console.log("0")
Actual behavior
console.log("-0")
Version
1.5.24
Additional context
No response