diff --git a/tests/baselines/reference/declarationEmitObjectAssignedDefaultExport.types b/tests/baselines/reference/declarationEmitObjectAssignedDefaultExport.types
index b95d5a76463..9d05d21a2fd 100644
--- a/tests/baselines/reference/declarationEmitObjectAssignedDefaultExport.types
+++ b/tests/baselines/reference/declarationEmitObjectAssignedDefaultExport.types
@@ -78,9 +78,9 @@ export const C = styled.div``;
 
 export default Object.assign(A, {
 >Object.assign(A, {    B,    C}) : string & import("tests/cases/compiler/node_modules/styled-components/index").StyledComponentBase<"div", import("tests/cases/compiler/node_modules/styled-components/index").DefaultTheme, {}, never> & import("tests/cases/compiler/node_modules/styled-components/node_modules/hoist-non-react-statics/index").NonReactStatics<"div"> & { B: import("tests/cases/compiler/node_modules/styled-components/index").StyledComponent<"div", import("tests/cases/compiler/node_modules/styled-components/index").DefaultTheme, {}, never>; C: import("tests/cases/compiler/node_modules/styled-components/index").StyledComponent<"div", import("tests/cases/compiler/node_modules/styled-components/index").DefaultTheme, {}, never>; }
->Object.assign : { <T, U>(target: T, source: U): T & U; <T, U, V>(target: T, source1: U, source2: V): T & U & V; <T, U, V, W>(target: T, source1: U, source2: V, source3: W): T & U & V & W; (target: object, ...sources: any[]): any; }
+>Object.assign : { <T extends {}, U>(target: T, source: U): T & U; <T extends {}, U, V>(target: T, source1: U, source2: V): T & U & V; <T extends {}, U, V, W>(target: T, source1: U, source2: V, source3: W): T & U & V & W; (target: object, ...sources: any[]): any; }
 >Object : ObjectConstructor
->assign : { <T, U>(target: T, source: U): T & U; <T, U, V>(target: T, source1: U, source2: V): T & U & V; <T, U, V, W>(target: T, source1: U, source2: V, source3: W): T & U & V & W; (target: object, ...sources: any[]): any; }
+>assign : { <T extends {}, U>(target: T, source: U): T & U; <T extends {}, U, V>(target: T, source1: U, source2: V): T & U & V; <T extends {}, U, V, W>(target: T, source1: U, source2: V, source3: W): T & U & V & W; (target: object, ...sources: any[]): any; }
 >A : import("tests/cases/compiler/node_modules/styled-components/index").StyledComponent<"div", import("tests/cases/compiler/node_modules/styled-components/index").DefaultTheme, {}, never>
 >{    B,    C} : { B: import("tests/cases/compiler/node_modules/styled-components/index").StyledComponent<"div", import("tests/cases/compiler/node_modules/styled-components/index").DefaultTheme, {}, never>; C: import("tests/cases/compiler/node_modules/styled-components/index").StyledComponent<"div", import("tests/cases/compiler/node_modules/styled-components/index").DefaultTheme, {}, never>; }