gajus/usus

Multiple viewports, mobile + non-mobile

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#8 创建于 2017年7月8日

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 (10 评论) (1 反应) (0 负责人)JavaScript (800 star) (33 fork)batch import
enhancementhelp wanted

描述

Is there a way to call usus to obtain a single stylesheet with "critical" CSS for all possible viewport sizes, and mobile and retina options?

Motivation: We don't know the client's viewport size on the server side, so the critical CSS should include the necessary CSS for all viewport sizes.

贡献者指南

技术栈
javascriptnodejs
领域
performancebackend
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。
clear
前置要求
Understanding of critical CSSNode.js experience
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。
30
研究方向
Investigate how to generate critical CSS for different viewport sizes simultaneously. Look at the current implementation in usus, likely in the lib/ directory. Review the issue comments for any suggested approaches. Consider using Puppeteer's device emulation or rendering the page at multiple viewports and merging the critical CSS.