Cherrypick Promise.try and Promise.withResolvers to the Hermes V1 branch (250829098.0.0-stable)#2020
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lavenzg merged 1 commit intoMay 14, 2026
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Summary: The PR is merged into stable, we need to port to current staging so that it will be still usable in next stable release. Our own Promise improvements are only included in static_h branch and will be available in next staging release. Reviewed By: tmikov Differential Revision: D105240151 fbshipit-source-id: ab1c080c8c58ead964c44dd63d1059ca2c481184
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It's working, React Native 0.86.x: |
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….withResolvers` (#57215) Summary: New methods `Promise.try` and `Promise.withResolvers` were added to the Hermes V1 branch, see: facebook/hermes#2020 I tested them on the latest RN 0.86.0, and they are working: ```tsx console.log({ 'ReactNativeVersion.getVersionString()':ReactNativeVersion.getVersionString(), 'Promise.try': Promise.try, 'Promise.withResolvers': Promise.withResolvers, }); //{ // "Promise.try": [Function anonymous], // "Promise.withResolvers": [Function anonymous], // "ReactNativeVersion.getVersionString()": "0.86.0" // } ``` - `es2024.promise` - includes `Promise.withResolvers` - `esnext.promise` - includes `Promise.try` ## Changelog: [GENERAL] [ADDED] - Add `Promise.try` + `Promise.withResolvers` typescript types Pull Request resolved: #57215 Test Plan: ``` edit `node_modules/react-native/typescript-config/tsconfig.json` add `es2024.promise` `esnext.promise` try to use new methods in ts files // no error expected ``` Reviewed By: robhogan Differential Revision: D108745447 Pulled By: fabriziocucci fbshipit-source-id: dfebe404ab45bc4cb9071692d2f13c42b2816e51
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Summary
Based on this conversations: #2018 (comment)
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