ts-r
  • Error
  • Reported by the type checker

TS2559

Type '{0}' has no properties in common with type '{1}'.

A value is assigned to a type whose properties are all optional, but the value has none of them. Check you passed the right object.

What it means

A type whose properties are all optional (a "weak" type) would accept almost anything. To catch mistakes, assigning a value that shares no property with it is reported.

Example

index.ts
interface Options {
  verbose?: boolean;
  depth?: number;
}
const opts = { colour: true };
export const o: Options = opts;
ts-r-check -p tsconfig.json --pretty false ts-r output
index.ts(6,14): error TS2559: Type '{ colour: boolean; }' has no properties in common with type 'Options'.

Recorded by node scripts/verify-examples.mjs with ts-r built from commit 6deaf01. The example uses the default tsconfig: strict, target: es2022, module: esnext, moduleResolution: bundler.

How to fix

  • Pass an object with at least one of the expected properties (often a typo in a property name).
  • If the value really is unrelated, don't assign it to that type.