TS2651
TypeScriptERRORNotableTypeHIGH confidence

A member initializer in a enum declaration cannot reference members declared ...

Production Risk

Build will fail; resolve before shipping.

What this means

A type-checking error (TS2651): A member initializer in a enum declaration cannot reference members declared after it, including members defined in other enums.. This diagnostic is emitted by the TypeScript compiler when a member initializer in a enum declaration cannot reference members declared after it, including members defined in other enums..

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

TypeScript compiler reports TS2651 during type checking.

trigger — this will error
trigger — this will error
// Triggers TS2651
// A member initializer in a enum declaration cannot reference members declared after it, including members defined in other enums.

expected output

error TS2651: A member initializer in a enum declaration cannot reference members declared after it, including members defined in other enums.

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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