Regex works in Node.js but not in Bun #17970
Description
What version of Bun is running?
1.2.4+fd9a5ea66
What platform is your computer?
Darwin 24.3.0 arm64 arm
What steps can reproduce the bug?
Run the following code using node and bun, you can observe that Node.js returns a result for the regex, while in bun, it logs null:
(async () => {
const res = await fetch('https://raw.githubusercontent.com/GitbookIO/integrations/c26e594ca86bc75eaa18c4cda995dab56e21008a/integrations/arcade/assets/arcade-preview.png');
const content = await res.arrayBuffer();
const base64 = Buffer.from(content).toString('base64');
const byteRegexp = /^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?$/;
console.log(base64.match(byteRegexp));
})()This regex might not be correct, but it should still return the same value.
What is the expected behavior?
Both Node.js and Bun should return the same results.
What do you see instead?
Bun returns null.
Additional information
No response