eclipse-theia/theia

[debug] Misleading error message when trying to debug JS without opening the file in editor

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#5,586 opened on 2019年6月26日

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debugenhancementhelp wanted

説明

Config:

{
  // Use IntelliSense to learn about possible attributes.
  // Hover to view descriptions of existing attributes.
  "version": "0.2.0",
  "configurations": [
      {
          "type": "node",
          "request": "launch",
          "name": "Launch Node.js Program",
          "program": "${file}"
      }
  ]
}

Theia: Start the debugging without an actual file opened in the editor:

debug-session-connection.ts:129 Uncaught Error: the debug session connection is disposed, id: 330c5b4f-10b7-42e3-8888-f09ff9c5c770
    at DebugSessionConnection.push.../../packages/debug/lib/browser/debug-session-connection.js.DebugSessionConnection.checkDisposed (debug-session-connection.ts:129)
    at DebugSessionConnection.push.../../packages/debug/lib/browser/debug-session-connection.js.DebugSessionConnection.newEmitter (debug-session-connection.ts:284)
    at DebugSessionConnection.push.../../packages/debug/lib/browser/debug-session-connection.js.DebugSessionConnection.getEmitter (debug-session-connection.ts:278)
    at DebugSessionConnection.push.../../packages/debug/lib/browser/debug-session-connection.js.DebugSessionConnection.doFire (debug-session-connection.ts:275)
    at DebugSessionConnection.push.../../packages/debug/lib/browser/debug-session-connection.js.DebugSessionConnection.handleEvent (debug-session-connection.ts:258)
    at DebugSessionConnection.push.../../packages/debug/lib/browser/debug-session-connection.js.DebugSessionConnection.handleMessage (debug-session-connection.ts:214)
    at WebSocketChannel.fireMessage (debug-session-connection.ts:146)
    at WebSocketChannel.../../packages/core/lib/common/messaging/web-socket-channel.js.WebSocketChannel.handleMessage (web-socket-channel.ts:49)
    at WebSocketConnectionProvider.socket.onmessage (ws-connection-provider.ts:74)
push.../../packages/debug/lib/browser/debug-session-connection.js.DebugSessionConnection.checkDisposed @ debug-session-connection.ts:129
push.../../packages/debug/lib/browser/debug-session-connection.js.DebugSessionConnection.newEmitter @ debug-session-connection.ts:284
push.../../packages/debug/lib/browser/debug-session-connection.js.DebugSessionConnection.getEmitter @ debug-session-connection.ts:278
push.../../packages/debug/lib/browser/debug-session-connection.js.DebugSessionConnection.doFire @ debug-session-connection.ts:275
push.../../packages/debug/lib/browser/debug-session-connection.js.DebugSessionConnection.handleEvent @ debug-session-connection.ts:258
push.../../packages/debug/lib/browser/debug-session-connection.js.DebugSessionConnection.handleMessage @ debug-session-connection.ts:214
(anonymous) @ debug-session-connection.ts:146
../../packages/core/lib/common/messaging/web-socket-channel.js.WebSocketChannel.handleMessage @ web-socket-channel.ts:49
WebSocketConnectionProvider.socket.onmessage @ ws-connection-provider.ts:74
10:43:40.588

Screen Shot 2019-06-26 at 10 45 46

VS Code: Screen Shot 2019-06-26 at 10 44 25

コントリビューターガイド

技術スタック
typescriptnodejs
領域
developer experiencetooling
Issue 種別
bug
難度新しい貢献者にとっての実装難度です。1 は非常に小さな変更、5 は専門的な作業です。
3
推定時間経験ある貢献者が調査、実装、テスト、pull request 準備にかけるおおよその時間範囲です。
1-3 hours
活動状況Issue が今どれだけ取り組みやすいかを示します。新しい、活発、古い、ブロック中、またはメンテナー入力待ちなどです。
stale
明確さ期待される変更、受け入れ条件、次の手順がどれだけ明確かを示します。
mostly clear
前提条件
understanding of debug session lifecycle in Theiaexperience with TypeScript
初心者向け度初回貢献者にどれだけ取り組みやすいかを 1-100 で推定したスコアです。
30
調査方針
Investigate the debug session connection.ts file around line 129 to understand why a disposed session error occurs when no file is open. The fix should catch this scenario and display a user friendly message like 'No file open' instead of the internal error. Check how VS Code handles the same situation for reference.