EC
TS2615
TypeScriptERRORNotableTypeHIGH confidence

Type of property 'X' circularly references itself in mapped type 'X'.

Production Risk

Build will fail; resolve before shipping.

What this means

A type-checking error (TS2615): Type of property 'X' circularly references itself in mapped type 'X'.. This diagnostic is emitted by the TypeScript compiler when type of property 'X' circularly references itself in mapped type 'X'..

Why it happens
  1. 1The type definition is circular or infinitely recursive
How to reproduce

TypeScript compiler reports TS2615 during type checking.

trigger — this will error
trigger — this will error
// Triggers TS2615
// Type of property 'X' circularly references itself in mapped type 'X'.

expected output

error TS2615: Type of property 'X' circularly references itself in mapped type '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

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