EC
TS2365
TypeScriptERRORNotableTypeHIGH confidence

Operator 'X' cannot be applied to types 'X' and 'X'.

Production Risk

Build will fail; resolve before shipping.

What this means

A type-checking error (TS2365): Operator 'X' cannot be applied to types 'X' and 'X'.. This diagnostic is emitted by the TypeScript compiler when operator 'X' cannot be applied to types 'X' and 'X'..

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

TypeScript compiler reports TS2365 during type checking.

trigger — this will error
trigger — this will error
// Triggers TS2365
// Operator 'X' cannot be applied to types 'X' and 'X'.

expected output

error TS2365: Operator 'X' cannot be applied to types 'X' and 'X'.

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

Content generated with AI assistance and reviewed for accuracy. Found an error? hello@errcodes.dev

← All TypeScript errors