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TypeScript error

TS2520

Duplicate identifier '{0}'. Compiler uses declaration '{1}' to support async functions.

Reference entryTypeScriptFetched 25 Sept 2026

This is a reference entry from TypeScript diagnosticMessages.json. A full explanation with fixes has not been written yet.

The error message

Duplicate identifier '{0}'. Compiler uses declaration '{1}' to support async functions.

As listed by TypeScript diagnosticMessages.json

{0}, {1} and so on are filled in by the compiler.

Details

Category: Error
Severity: error

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Source: TypeScript diagnosticMessages.json. Data fetched 2026-09-25T01:43:12.672Z.