react-intl VS MobX

I am developing an application with react/redux, and I started using library react-intl for formatting messages and dates.

I have been struggling mocking React-Intl library with Jest because I'm having this error when I run tests:

export function categoryIdToCategoryName(categoryId) {let name;switch (categoryId) { case constants.RISK_CATEGORY_LOW: name = 'low'; break; case constants.RISK_CATEGORY_MEDIUM: name = 'medium'; break; case constants.RISK_CATEGORY_HIGH: name = 'high'; break; case constants.RISK_CATEGORY_CRITICAL: name = 'critical'; break; default: console.warn('see: /utils/risk.js', 'categoryIdToCategoryName:', categoryId); name = 'unknown'; } return name;} I would like to translate this texts - [low, medium, high, critical] using https://github.com/yahoo/react-intl. So I defined messages

I'm using React-Intl with webpack and I need the Intl shim to support Safari and IE, but I don't want to load it for browsers that already support the Intl spec.

React Intl

States can also be organized in some central places (aka. stores). You can use Tini Store (very simple, ~50 lines) or other state management solutions such as MobX, TinyX, ...

Similarly to Promises/A+, this effort focuses on aligning the JavaScript ecosystem. If this alignment is successful, then a standard could emerge, based on that experience. Several framework authors are collaborating here on a common model which could back their reactivity core. The current draft is based on design input from the authors/maintainers of Angular, Bubble, Ember, FAST, MobX, Preact, Qwik, RxJS, Solid, Starbeam, Svelte, Vue, Wiz, and more…

MobX

Mutable-based: leverages proxy to create mutable data sources which can be directly written to or reactively read from. Candidates in this group are MobX and Valtio.

Looks good! FWIW I always felt the observable pattern much more intuitive than the redux/reducer style. Something like https://mobx.js.org/

Things get hairy in both, but redux pattern feels so ridiculously ceremonially to effectively manage a huge global state object with a false sense of "purity".

Observables otoh say "fuck it, I'm mutating everything, do what you want with it".

MobX Documentation

There's also others libraries like https://github.com/mobxjs/mobx which aren't specific to RN but can be used in any JS environment.

Valtio is like simplified MobX

Link: https://mobx.js.org