EC
TS2352
TypeScriptERRORNotableTypeHIGH confidence

Conversion of type 'X' to type 'X' may be a mistake because neither type suff...

Production Risk

Build will fail; resolve before shipping.

What this means

A type-checking error (TS2352): Conversion of type 'X' to type 'X' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.. This diagnostic is emitted by the TypeScript compiler when conversion of type 'X' to type 'X' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first..

Why it happens
  1. 1Incorrect TypeScript syntax or type usage
  2. 2Type mismatch between declared and actual value
How to reproduce

TypeScript compiler reports TS2352 during type checking.

trigger — this will error
trigger — this will error
// Triggers TS2352
// Conversion of type 'X' to type 'X' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.

expected output

error TS2352: Conversion of type 'X' to type 'X' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.

Fix

Address the TypeScript diagnostic

WHEN When this error is reported by the compiler

Address the TypeScript diagnostic
// Run the TypeScript compiler for details:
npx tsc --noEmit
// Use the TypeScript playground to test your code:
// https://www.typescriptlang.org/play

Why this works

Review the full error message and location; the TypeScript handbook provides guidance on each error category.

Sources
Official documentation ↗

TypeScript Compiler Diagnostics

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