Microsoft/TypeScript

Unable to access ServiceWorkerGlobalScope via `self.`

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#14,877 建立於 2017年3月27日

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 (42 留言) (63 反應) (0 負責人)TypeScript (48,455 star) (6,726 fork)batch import
BugDomain: lib.d.tsHelp Wanted

描述

Since ServiceWorker related types sit in lib.webworker.d.ts, webworker lib need to be added to tsconfig.json.

{
  "compilerOptions": {
    "lib": [
      "es2017",
      "webworker"
    ]
  }
}

But in current lib.webworker.d.ts, it declare var self: WorkerGlobalScope;, so we can't access ServiceWorkerGlobalScope via self.

TypeScript Version: 2.2.1

Expected behavior:

Can access ServiceWorkerGlobalScope via self.(like self.clients)

Actual behavior:

Access with error.

image

貢獻者指南

技術棧
typescript
領域
frontendtooling
議題類型
bug
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。
1-3 hours
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。
clear
前置要求
TypeScript basicsService Worker APIlib declaration files
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。
30
研究方向
The issue requests that `self` in `lib.webworker.d.ts` should be of type `ServiceWorkerGlobalScope` instead of just `WorkerGlobalScope` when the `webworker` lib is used. To fix, locate the declaration `declare var self: WorkerGlobalScope;` in `lib.webworker.d.ts` and change it to a proper conditional type or an overload that covers `ServiceWorkerGlobalScope`. Check the current version of the file to see if any changes have been made. Also review the discussion in the issue comments for any proposed approaches or objections. Note that TypeScript's lib files are auto generated, so a fix might need to be done in the upstream source.