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.
貢獻者指南
技術棧
javascript
領域
data
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-2 days
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
mostly clear
前置要求
JavaScript basicsUnderstanding of browser compat data
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
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.
