RangeError: Maximum call stack size exceeded

[Page-]

Bug Report

🔎 Search Terms

🕗 Version & Regression Information

• This is a crash
• This changed between versions 4.6.4 and 4.7.2

⏯ Playground Link

Playground link with relevant code

💻 Code

interface Request {
	body: any
}

const x: { [uuid: string]: number } = {};

(req: Request) => {
	x[uuid]++;

	const uuid = req.body.common_name;
}

🙁 Actual behavior

RangeError: Maximum call stack size exceeded
at resolveNameHelper (C:\ts-test\node_modules\typescript\lib\tsc.js:41378:21)
at resolveName (C:\ts-test\node_modules\typescript\lib\tsc.js:41165:20)
at resolveEntityName (C:\ts-test\node_modules\typescript\lib\tsc.js:42315:42)
at tryGetElementAccessExpressionName (C:\ts-test\node_modules\typescript\lib\tsc.js:58553:30)
at getAccessedPropertyName (C:\ts-test\node_modules\typescript\lib\tsc.js:58533:24)
at isMatchingReference (C:\ts-test\node_modules\typescript\lib\tsc.js:58516:78)
at getTypeAtFlowAssignment (C:\ts-test\node_modules\typescript\lib\tsc.js:59549:21)
at getTypeAtFlowNode (C:\ts-test\node_modules\typescript\lib\tsc.js:59476:32)
at getFlowTypeOfReference (C:\ts-test\node_modules\typescript\lib\tsc.js:59440:51)
at getFlowTypeOfAccessExpression (C:\ts-test\node_modules\typescript\lib\tsc.js:63184:28)

🙂 Expected behavior

The error message:

Block-scoped variable 'uuid' used before its declaration.ts(2448)

[q42jaap]

I found this too:

function fn(propsStrings: Record<string, unknown>) {
  for (const key of Object.keys(propsStrings)) {
    const value = propsStrings[value];
  }
}

Seems to be the same issue?

[jakebailey]

Yes, that appears to be the same thing.