Add TypeScript types for TextEncoder/TextDecoder to global type declarations

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
78/100
Issue type
Feature
Clarity
Clearly specified
Activity status
Quiet
Tech stack
typescript
Domain
developer-experience, mobile

Research direction

Start by reading src/types/globals.d.ts and inspect how existing global APIs are declared. Add declarations for TextEncoder and TextDecoder, then verify that TypeScript users can reference both APIs without casts, DOM libraries, or custom declarations.

Written by the indexing model from the issue text.

Description

Needs: Attention Needs: Repro

Hey! Both TextEncoder and TextDecoder are now natively available in Hermes:

But neither is declared in React Native's TypeScript globals (src/types/globals.d.ts), so TypeScript users have to either cast through any, pull in lib: ["dom"], or add their own declarations to use these APIs without type errors.

Would be great to add the type declarations now that the runtime support is there. Happy to submit a PR if that helps.

Dominant language
C++
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Forks
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