🐛 Playground: typing special Unicode (Korean, Chinese, …) characters can crash the editor

[xnuk]

Environment information

Firefox 123 and/or Chromium 121, with:

• Arch Linux x64
• swaywm 1.8.1
• kime 3.0.2 (word_commit: false)

What happened?

For non-Korean users: try to add colon(:) at the end of the source code from here, and get a crash: https://biomejs.dev/playground/?code=SMVVsVjVOMGUxg%3D%3D

test.mp4

RangeError: Invalid position 34 in document of length 25
    lineAt https://biomejs.dev/_astro/PlaygroundLoader.660c0941.js:1
    YL https://biomejs.dev/_astro/PlaygroundLoader.660c0941.js:22
    update https://biomejs.dev/_astro/PlaygroundLoader.660c0941.js:22
    update https://biomejs.dev/_astro/PlaygroundLoader.660c0941.js:4
    applyTransaction https://biomejs.dev/_astro/PlaygroundLoader.660c0941.js:4
    yc https://biomejs.dev/_astro/PlaygroundLoader.660c0941.js:4
    ve https://biomejs.dev/_astro/PlaygroundLoader.660c0941.js:4
    applyTransaction https://biomejs.dev/_astro/PlaygroundLoader.660c0941.js:4
    get state https://biomejs.dev/_astro/PlaygroundLoader.660c0941.js:4
    update https://biomejs.dev/_astro/PlaygroundLoader.660c0941.js:9
    _dispatch https://biomejs.dev/_astro/PlaygroundLoader.660c0941.js:9
    dispatch https://biomejs.dev/_astro/PlaygroundLoader.660c0941.js:9
    Fr https://biomejs.dev/_astro/PlaygroundLoader.660c0941.js:23
    Tf https://biomejs.dev/_astro/client-v17.3be7a2b8.js:23
    unstable_runWithPriority https://biomejs.dev/_astro/client-v17.3be7a2b8.js:8
    on https://biomejs.dev/_astro/client-v17.3be7a2b8.js:19
    Xe https://biomejs.dev/_astro/client-v17.3be7a2b8.js:23
    Pf https://biomejs.dev/_astro/client-v17.3be7a2b8.js:23
    Yr https://biomejs.dev/_astro/client-v17.3be7a2b8.js:8
    onmessage https://biomejs.dev/_astro/client-v17.3be7a2b8.js:8
    EventHandlerNonNull* https://biomejs.dev/_astro/client-v17.3be7a2b8.js:8
    <anonymous> https://biomejs.dev/_astro/client-v17.3be7a2b8.js:8

Writing #1786, I found this issue. The editor is not good at Korean maybe? Also you can make some new errors if you tries to delete Korean characters (Firefox only I think):

 Uncaught RangeError: Position 37 is out of range for changeset of length 33
    mapPos https://biomejs.dev/_astro/PlaygroundLoader.0f4eb144.js:4
    map https://biomejs.dev/_astro/PlaygroundLoader.0f4eb144.js:5
    map https://biomejs.dev/_astro/PlaygroundLoader.0f4eb144.js:5
    update https://biomejs.dev/_astro/PlaygroundLoader.0f4eb144.js:10
    update https://biomejs.dev/_astro/PlaygroundLoader.0f4eb144.js:4
    applyTransaction https://biomejs.dev/_astro/PlaygroundLoader.0f4eb144.js:4
    yc https://biomejs.dev/_astro/PlaygroundLoader.0f4eb144.js:4
    ve https://biomejs.dev/_astro/PlaygroundLoader.0f4eb144.js:4
    applyTransaction https://biomejs.dev/_astro/PlaygroundLoader.0f4eb144.js:4
    get state https://biomejs.dev/_astro/PlaygroundLoader.0f4eb144.js:4
    update https://biomejs.dev/_astro/PlaygroundLoader.0f4eb144.js:9
    _dispatch https://biomejs.dev/_astro/PlaygroundLoader.0f4eb144.js:9
    dispatch https://biomejs.dev/_astro/PlaygroundLoader.0f4eb144.js:9
    P4 https://biomejs.dev/_astro/PlaygroundLoader.0f4eb144.js:9
    flush https://biomejs.dev/_astro/PlaygroundLoader.0f4eb144.js:9
    observer https://biomejs.dev/_astro/PlaygroundLoader.0f4eb144.js:9

Expected result

Not crashing, at least.

Code of Conduct

• I agree to follow Biome's Code of Conduct

[xnuk]

Plus, from empty playground, pasting transgender flag emoji (🏳️‍⚧️, String.fromCodePoint(0x1F3F3, 0xFE0F, 0x200D, 0x26A7, 0xFE0F)) makes crash.

[arendjr]

Note there is some more useful information about this in #1941. I’m closing that one as a duplicate.

[Sec-ant]

This is also the same issue with #1385

[arendjr]

Thanks, given the info there I’ll close this one as duplicate.