Error in Safari due to lookbehind assertion used in regex

[daks01]

lookbehind assertion is not supported in Safari:

• https://caniuse.com/js-regexp-lookbehind
• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp#browser_compatibility

a few years ago there was a similar Issue (closed now)

• WebKit error on markdown fenced code blocks regex #34

but still no babel plugin or corejs polyfill appeared

• Support lookbehinds DmitrySoshnikov/babel-plugin-transform-modern-regexp#5
• [RegExp] Lookbehind assertion zloirock/core-js#876

can you simulate lookbehind like this?

• https://github.com/beaugunderson/xregexp-lookbehind
• https://gist.github.com/slevithan/2387872

[sapegin]

Feel free to submit a pull request with a fix 👾

[daks01]

can you explain what this regex do?
it may be possible to write it without lookbehind assertion...
https://github.com/sapegin/richtypo.js/blob/master/packages/richtypo/src/richtypo.js#L6

upd: demo

[sapegin]

It catches all Markdown images and links, so we could exclude them from processing and readd at the end:

![Foo](http://bar)
[Foo](http://bar)

[daks01]

regex without lookbehind
https://extendsclass.com/regex/55c66ae

[sapegin]

We could try that, thanks!

[xpuu]

Oh, now I see. There's not just one regexp with lookbehind, but plenty of them. :(

[daks01]

Oh, now I see. There's not just one regexp with lookbehind, but plenty of them. :(

yep,(

[xpuu]

Hopefully lookbehind support in webkit should be released soon. 🙄

Joel Bruner 2023-01-13 11:50:22 PST
It's working now in Release 161 of Safari Technology Preview

[daks01]

xpuu
i came across several ways to emulate lookbehind in older browsers
https://blog.stevenlevithan.com/archives/mimic-lookbehind-javascript

maybe I will return to this issue in a month
who knows