Like it's done for already available browsers, see this and this files.
I have no ideas where I can find the data source, so required your help.
贡献者指南
技术栈
javascript
领域
data
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-2 days
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
mostly clear
前置要求
JavaScript basicsUnderstanding of browser compat data
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
45
研究方向
The issue requests adding compat data for missed browsers like Yandex Browser, similar to existing mappings in `packages/core js compat/src/mapping.mjs` and `scripts/build compat/data.mjs`. The contributor is unsure where to find data sources; researching public browser compat databases such as caniuse or MDN compat data would help. Additionally, checking the existing browser mappings in those files to understand the format is recommended.
