[sidepanel-js] ESM bundle crashes on Safari 14 because RegExp lookbehind detection is pre-evaluated
Open
Needs investigation
- Dominant language
- TypeScript
- Stars
- 4.4k
- Forks
- 439
- Avg merge
- 14h 32m
- Merged PRs (30d)
- 19
Description
## Description
Importing `@docsearch/sidepanel-js` causes the entire application to fail during module evaluation on Safari 14.1.2.
Safari reports:
```text
SyntaxError: Invalid regular expression: invalid group specifier name
RegExp
getRegex
(module code)
moduleEvaluation
Contributor guide
Research direction
Reproduce the import failure for @docsearch/sidepanel-js on Safari 14.1.2, then trace getRegex during ESM module evaluation to find where lookbehind detection is pre-evaluated. Done means importing the bundle no longer throws Safari's invalid regular expression error while preserving lookbehind detection in supported environments.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript, typescript
- Domain
- frontend
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Active
- Clarity
- Mostly clear
- Newbie friendliness
- 58/100