No overload matches this call

Option 1: Match arguments to an existing overload

format(42);           // matches overload 1: (number) => string
format("hi", "pre:"); // matches overload 2: (string, string) => string

Option 2: Add an overload that covers the missing case

function format(value: number): string;
function format(value: string, prefix: string): string;
function format(value: string): string; // new overload
function format(value: any, prefix?: string): string {
  return prefix ? prefix + value : String(value);
}

Option 3: Use a single signature with optional/union params

function format(value: number | string, prefix?: string): string {
  return prefix ? prefix + value : String(value);
}

What does TS2769 mean?

TS2769 means you called an overloaded function with arguments that don't match any of its declared overload signatures. TypeScript tries each overload and reports this when all fail.

How do I read the TS2769 error message?

TypeScript lists each overload and why it failed. Read the reasons for each overload to understand which argument is wrong. Usually the last overload listed tells you the most about the actual mismatch.

TS2769 with React JSX — how to fix?

Common when passing props of the wrong type. TypeScript tries each overload of createElement and reports TS2769 when none match. Check which prop is the wrong type and fix it.

TS2769 in lodash/library calls — how to fix?

Library overloads can be complex. Check the library docs for the expected argument types. If the types are wrong, update @types/library to the latest version.

How do I write good TypeScript overloads to avoid TS2769 for callers?

Cover all expected call patterns with explicit overloads. Keep the implementation signature (the last one) as the widest type. Order overloads from most specific to least specific.