Poor error recovery in jsx elements

Description

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

Contributor guide

Tech stack

typescript

Domain

developer experience

Issue type

bug

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

3

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

half day

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

stale

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

mostly clear

Prerequisites

understanding of TypeScript parser internals

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

20

Research direction

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.