Microsoft/TypeScript

Poor error recovery in jsx elements

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#4,539 建立於 2015年8月29日

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 (1 留言) (0 反應) (0 負責人)TypeScript (48,455 star) (6,726 fork)batch import
BugDomain: JSX/TSXHelp Wanted

描述

var x = <div span=3 ></div>;

Error   TS1005  '{' expected.   TypeScriptHTMLApp6  c:\Users\mhegazy\Documents\Visual Studio 2015\Projects\TypeScriptHTMLApp6\TypeScriptHTMLApp6\file1.tsx  10
Error   TS17002 Expected corresponding JSX closing tag for 'div'.   TypeScriptHTMLApp6  c:\Users\mhegazy\Documents\Visual Studio 2015\Projects\TypeScriptHTMLApp6\TypeScriptHTMLApp6\file1.tsx  10
Error   TS17002 Expected corresponding JSX closing tag for 'div'.   TypeScriptHTMLApp6  c:\Users\mhegazy\Documents\Visual Studio 2015\Projects\TypeScriptHTMLApp6\TypeScriptHTMLApp6\file1.tsx  10
Error   TS1109  Expression expected.    TypeScriptHTMLApp6  c:\Users\mhegazy\Documents\Visual Studio 2015\Projects\TypeScriptHTMLApp6\TypeScriptHTMLApp6\file1.tsx  10
Error   TS2339  Property 'div' does not exist on type 'HTMLAttributes'. TypeScriptHTMLApp6  c:\Users\mhegazy\Documents\Visual Studio 2015\Projects\TypeScriptHTMLApp6\TypeScriptHTMLApp6\file1.tsx  10
Error   TS2322  Type 'boolean' is not assignable to type 'number'.  TypeScriptHTMLApp6  c:\Users\mhegazy\Documents\Visual Studio 2015\Projects\TypeScriptHTMLApp6\TypeScriptHTMLApp6\file1.tsx  10

貢獻者指南

技術棧
typescript
領域
developer experience
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。
half day
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
understanding of TypeScript parser internals
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。
20
研究方向
The issue demonstrates poor error recovery when parsing an invalid JSX attribute (e.g., `span=3` instead of `span={3}`), leading to multiple misleading errors. To improve recovery, examine the parser logic in `src/compiler/parser.ts` around JSX attribute parsing, particularly how the parser handles unexpected tokens and skips to the next element. Consider adding better heuristics to avoid cascading errors. Review any existing comments or test cases in the codebase related to JSX error recovery.