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tests/cases/compiler/nestedExcessPropertyChecking.ts(6,7): error TS2322: Type 'C1' is not assignable to type 'A1 & B1'.
Types of property 'x' are incompatible.
Type '{ c: string; }' has no properties in common with type '{ a?: string | undefined; } & { b?: string | undefined; }'.
tests/cases/compiler/nestedExcessPropertyChecking.ts(13,7): error TS2559: Type 'C2' has no properties in common with type 'A2 & B2'.
tests/cases/compiler/nestedExcessPropertyChecking.ts(17,5): error TS2559: Type 'E' has no properties in common with type '{ nope?: any; }'.
tests/cases/compiler/nestedExcessPropertyChecking.ts(18,5): error TS2559: Type '"A"' has no properties in common with type '{ nope?: any; }'.
tests/cases/compiler/nestedExcessPropertyChecking.ts(30,22): error TS2559: Type 'false' has no properties in common with type 'OverridesInput'.
tests/cases/compiler/nestedExcessPropertyChecking.ts(40,9): error TS2559: Type 'false' has no properties in common with type 'OverridesInput'.
==== tests/cases/compiler/nestedExcessPropertyChecking.ts (6 errors) ====
type A1 = { x: { a?: string } };
type B1 = { x: { b?: string } };
type C1 = { x: { c: string } };
const ab1: A1 & B1 = {} as C1; // Error
~~~
!!! error TS2322: Type 'C1' is not assignable to type 'A1 & B1'.
!!! error TS2322: Types of property 'x' are incompatible.
!!! error TS2322: Type '{ c: string; }' has no properties in common with type '{ a?: string | undefined; } & { b?: string | undefined; }'.
type A2 = { a?: string };
type B2 = { b?: string };
type C2 = { c: string };
const ab2: A2 & B2 = {} as C2; // Error
~~~
!!! error TS2559: Type 'C2' has no properties in common with type 'A2 & B2'.
enum E { A = "A" }
let x: { nope?: any } = E.A; // Error
~
!!! error TS2559: Type 'E' has no properties in common with type '{ nope?: any; }'.
let y: { nope?: any } = "A"; // Error
~
!!! error TS2559: Type '"A"' has no properties in common with type '{ nope?: any; }'.
// Repros from #51043
type OverridesInput = {
someProp?: 'A' | 'B'
}
const foo1: Partial<{ something: any }> & { variables: {
overrides?: OverridesInput;
} & Partial<{
overrides?: OverridesInput;
}>} = { variables: { overrides: false } }; // Error
~~~~~~~~~
!!! error TS2559: Type 'false' has no properties in common with type 'OverridesInput'.
!!! related TS6500 tests/cases/compiler/nestedExcessPropertyChecking.ts:27:5: The expected type comes from property 'overrides' which is declared here on type '{ overrides?: OverridesInput | undefined; } & Partial<{ overrides?: OverridesInput | undefined; }>'
interface Unrelated { _?: any }
interface VariablesA { overrides?: OverridesInput; }
interface VariablesB { overrides?: OverridesInput; }
const foo2: Unrelated & { variables: VariablesA & VariablesB } = {
variables: {
overrides: false // Error
~~~~~~~~~
!!! error TS2559: Type 'false' has no properties in common with type 'OverridesInput'.
!!! related TS6500 tests/cases/compiler/nestedExcessPropertyChecking.ts:35:24: The expected type comes from property 'overrides' which is declared here on type 'VariablesA & VariablesB'
}
};
// Simplified repro from #52252
type T1 = {
primary: { __typename?: 'Feature' } & { colors: { light: number, dark: number } },
};
type T2 = {
primary: { __typename?: 'Feature' } & { colors: { light: number } },
};
type Query = T1 & T2;
const response: Query = {
primary: {
colors: {
light: 1,
dark: 3,
},
},
};
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