Microsoft/TypeScript

navigator.share is not always a function

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#42,809 创建于 2021年2月15日

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 (7 评论) (18 反应) (0 负责人)TypeScript (48,455 star) (6,726 fork)batch import
BugDomain: lib.d.tsHelp Wanted

描述

Bug Report

navigator.share is undefined is many browsers, yet TypeScript reports it as "the function is always defined"

🔎 Search Terms

navigator.share share

🕗 Version & Regression Information

Version 4.1.5 & Nightly

⏯ Playground Link

https://www.typescriptlang.org/play?#code/JYMwBAFAdghgbsA5jALgewE4DoDOALGDAUwEowBvAWACgw6wBjNKHNAGyKzbUQgHIAKniJhYKYHBH5CIkEVQBXYmGA4VAWwAOHdUSgoiAEz4kA3DQC+YImxwiqtekxbtO3XoOGjUEqQWVyisqqomgoGtpEuvpGJubUFkA

💻 Code

if (navigator.share) {
    console.log('The native share feature is implemented');
} else {
    console.log('The native share feature is not implemented');
}

🙁 Actual behavior

TypeScript reports it as "the function is always defined"

🙂 Expected behavior

If should report navigator.share as maybe being present.

贡献者指南

技术栈
typescript
领域
developer experience
议题类型
bug
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。
1-3 hours
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
Knowledge of TypeScript type definitionsFamiliarity with browser APIs
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。
60
研究方向
The issue is that TypeScript's type definition for the Navigator interface marks navigator.share as always present, but it's only available in certain browsers. To fix, update the definition in lib.dom.d.ts to make share optional (e.g., share?: ShareData => void). Check the MDN documentation to confirm. No existing linked PRs or assignees, so this is open for contribution.