EC
TS1062
TypeScriptERRORNotableSyntaxHIGH confidence

Type is referenced directly or indirectly in the fulfillment callback of its ...

Production Risk

Build will fail; resolve before shipping.

What this means

A syntax error (TS1062): Type is referenced directly or indirectly in the fulfillment callback of its own 'then' method.. This diagnostic is emitted by the TypeScript compiler when type is referenced directly or indirectly in the fulfillment callback of its own 'then' method..

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

TypeScript compiler reports TS1062 during type checking.

trigger — this will error
trigger — this will error
// Triggers TS1062
// Type is referenced directly or indirectly in the fulfillment callback of its own 'then' method.

expected output

error TS1062: Type is referenced directly or indirectly in the fulfillment callback of its own 'then' method.

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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