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IE11 compatibility: `Array.prototype.find` is not supported

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
typescript
Domain
build-system, web-dev

Research direction

No source file or test is named. Start by locating the Array.prototype.find usages and the primary and ES5 build configuration, then check how the library is tested for IE11 compatibility. Done means choosing and implementing one of the listed compatibility approaches so this is no longer the remaining IE11 blocker.

Written by the indexing model from the issue text.

Description

Array.prototype.find is not supported in IE11, and this is the only functions that is blocking for IE11.

I think we should consider either:

  • Polyfill Array.prototype.find in the primary build
    • import 'core-js/modules/es6.array.find';
  • Remove the use of Array.prototype.find
  • Polyfill Array.prototype.find in a separate ES5 build
    • Since this is the only function that is blocking for IE11, it won't increase the build size significantly to justify for a separate build
Dominant language
TypeScript
Stars
199
Forks
133
No merged PRs in 30d

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