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RegExp topics when it has the global flag g set, the test() function will advance the lastIndex #1619

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nader-zouaoui opened this issue Sep 13, 2023 · 0 comments · May be fixed by #1620
Open

RegExp topics when it has the global flag g set, the test() function will advance the lastIndex #1619

nader-zouaoui opened this issue Sep 13, 2023 · 0 comments · May be fixed by #1620

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@nader-zouaoui
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nader-zouaoui commented Sep 13, 2023 •
edited

Describe the bug
When setting a RegExp in the list of topics to subscribe to, and that regular expression has the global flag set. The output of the list of topics to subscribe to become indeterministic

To Reproduce
Here is a sample of topics and a regex that produce the problem

const topics = [
    "affiliate-AffiliateCreated",
    "payment-PaymentCreated",
    "products-ProductCreated",
    "booking-BookingCreated",
    "auth-UserCreated",
    "shop-ShopCreated",
    "wallet-TransactionCreated",
    "auth-UserNewSessionCreated",
    "comments-CommentCreated",
    "works-WorkCreated",
    "landing-page-LandingPageBannerItemCreated",
    "booking-AvailabilityCreated",
    "queue-QueueCreated",
    "blogs-BlogCreated",
    "categories-CategoriesCreated",
    "auth-UserCreatedNewSession",
    "auth-ClientCreated"
]
let rg = /(.*)(Created)(.*)/gi
console.log(topics.filter(topic=> rg.test(topic))

Expected behavior

It is supposed to return the same array.

Environment:
NodeJS 18..

Additional context
The description of the problem

image
@nader-zouaoui nader-zouaoui linked a pull request Sep 13, 2023 that will close this issue
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fix: ignore global flag on regexp topic nader-zouaoui/kafkajs
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@nader-zouaoui