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False-positive that produces invalid regular expression #66

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EvgenyOrekhov opened this issue Jul 19, 2020 · 4 comments
Open

False-positive that produces invalid regular expression #66

EvgenyOrekhov opened this issue Jul 19, 2020 · 4 comments

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@EvgenyOrekhov
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/\]/u is getting optimized to /]/u which produces Parsing error: Invalid regular expression: /]/: Lone quantifier brackets.
@kasugaiasuka
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Same issue, /\{.*\}/u.exec("abc{foo}xyz") is optimized to /{.*}/u.exec("abc{foo}xyz") which produces Uncaught SyntaxError: Invalid regular expression: /{.*}/: Lone quantifier brackets.

The u flag disables Annex B extension, and makes regex behave like strict mode.
I noticed this problem because require-unicode-regexp recommended u to me.

@BrainMaestro
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Please report this issue to the upstream library https://github.com/DmitrySoshnikov/regexp-tree

@EvgenyOrekhov
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Upstream issue: DmitrySoshnikov/regexp-tree#224.

@BrainMaestro
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Great! Once it's fixed, I will be happy to publish an update that includes the fix

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3 participants
@BrainMaestro @EvgenyOrekhov @kasugaiasuka