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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"TS 5.8 TypeError: Cannot read properties of undefined (reading 'kind')","articleBody":"### 🔎 Search Terms\n\nTypeError: Cannot read properties of undefined (reading 'kind')\n\n### 🕗 Version \u0026 Regression Information\n\n- This changed between versions 5.7.3 and 5.8.2\n- This changed in commit or PR https://github.com/microsoft/TypeScript/pull/60052\n\n\n### ⏯ Playground Link\n\nhttps://www.typescriptlang.org/dev/bug-workbench/?ts=5.8.2#code/KYDwDg9gTgLgBDAnmYcDKMCGNUF44DeAsAFBxyYBccAdgK4C2ARsFANynlPUDOMUASxoBzDiQC+Y0qEiw4AYwA2mHjzgAVYH2Jk4PYDAzZgACj7HqRnAEoC4zgi3x8J4NUw1E1uLgB8hB3IAM2g4E3kIGj44AG0Aa2BEABo4ADdMRTpgAF04CCC4AHkmACtgeRgAOmAafgEtV2tvHXJWhAALAR5K-UMsHBMWttb4xOzqdMzgJMDW8WsxNvtdSVJl0iA\n\n### 💻 Code\n\n```ts\nexport type State = {\n  a: number;\n  b: string;\n};\n\nexport class Test{\n  setState(state: State){}\n  test = (e: any) =\u003e {\n    for (const [key, value] of Object.entries(e)) {\n      this.setState({\n        [key]: value,\n      });\n    }\n  };\n}\n```\n\n\n### 🙁 Actual behavior\n\nrunning `tsc` results in a crash:\n```\nTypeError: Cannot read properties of undefined (reading 'kind')\n```\n\n### 🙂 Expected behavior\n\nNo crash is expected, some type errors should be found instead.\n\n### Additional information about the issue\n\n_No response_","author":{"url":"https://github.com/zxbodya","@type":"Person","name":"zxbodya"},"datePublished":"2025-03-04T22:38:11.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/61351/TypeScript/issues/61351"}