diff --git a/tests/baselines/reference/objectSpreadStrictNull.symbols b/tests/baselines/reference/objectSpreadStrictNull.symbols
deleted file mode 100644
index e920276794..0000000000
--- a/tests/baselines/reference/objectSpreadStrictNull.symbols
+++ /dev/null
@@ -1,80 +0,0 @@
-=== tests/cases/conformance/types/spread/objectSpreadStrictNull.ts ===
-function f(
->f : Symbol(f, Decl(objectSpreadStrictNull.ts, 0, 0))
-
-    definiteBoolean: { sn: boolean },
->definiteBoolean : Symbol(definiteBoolean, Decl(objectSpreadStrictNull.ts, 0, 11))
->sn : Symbol(sn, Decl(objectSpreadStrictNull.ts, 1, 22))
-
-    definiteString: { sn: string },
->definiteString : Symbol(definiteString, Decl(objectSpreadStrictNull.ts, 1, 37))
->sn : Symbol(sn, Decl(objectSpreadStrictNull.ts, 2, 21))
-
-    optionalString: { sn?: string },
->optionalString : Symbol(optionalString, Decl(objectSpreadStrictNull.ts, 2, 35))
->sn : Symbol(sn, Decl(objectSpreadStrictNull.ts, 3, 21))
-
-    optionalNumber: { sn?: number },
->optionalNumber : Symbol(optionalNumber, Decl(objectSpreadStrictNull.ts, 3, 36))
->sn : Symbol(sn, Decl(objectSpreadStrictNull.ts, 4, 21))
-
-    undefinedString: { sn: string | undefined },
->undefinedString : Symbol(undefinedString, Decl(objectSpreadStrictNull.ts, 4, 36))
->sn : Symbol(sn, Decl(objectSpreadStrictNull.ts, 5, 22))
-
-    undefinedNumber: { sn: number | undefined }) {
->undefinedNumber : Symbol(undefinedNumber, Decl(objectSpreadStrictNull.ts, 5, 48))
->sn : Symbol(sn, Decl(objectSpreadStrictNull.ts, 6, 22))
-
-    // optional
-    let optionalUnionStops: { sn: string | number } = { ...definiteBoolean, ...definiteString, ...optionalNumber };
->optionalUnionStops : Symbol(optionalUnionStops, Decl(objectSpreadStrictNull.ts, 8, 7))
->sn : Symbol(sn, Decl(objectSpreadStrictNull.ts, 8, 29))
->definiteBoolean : Symbol(definiteBoolean, Decl(objectSpreadStrictNull.ts, 0, 11))
->definiteString : Symbol(definiteString, Decl(objectSpreadStrictNull.ts, 1, 37))
->optionalNumber : Symbol(optionalNumber, Decl(objectSpreadStrictNull.ts, 3, 36))
-
-    let optionalUnionDuplicates: { sn: string | number } = { ...definiteBoolean, ...definiteString, ...optionalString, ...optionalNumber };
->optionalUnionDuplicates : Symbol(optionalUnionDuplicates, Decl(objectSpreadStrictNull.ts, 9, 7))
->sn : Symbol(sn, Decl(objectSpreadStrictNull.ts, 9, 34))
->definiteBoolean : Symbol(definiteBoolean, Decl(objectSpreadStrictNull.ts, 0, 11))
->definiteString : Symbol(definiteString, Decl(objectSpreadStrictNull.ts, 1, 37))
->optionalString : Symbol(optionalString, Decl(objectSpreadStrictNull.ts, 2, 35))
->optionalNumber : Symbol(optionalNumber, Decl(objectSpreadStrictNull.ts, 3, 36))
-
-    let allOptional: { sn?: string | number } = { ...optionalString, ...optionalNumber };
->allOptional : Symbol(allOptional, Decl(objectSpreadStrictNull.ts, 10, 7))
->sn : Symbol(sn, Decl(objectSpreadStrictNull.ts, 10, 22))
->optionalString : Symbol(optionalString, Decl(objectSpreadStrictNull.ts, 2, 35))
->optionalNumber : Symbol(optionalNumber, Decl(objectSpreadStrictNull.ts, 3, 36))
-
-    // undefined
-    let undefinedUnionStops: { sn: string | number } = { ...definiteBoolean, ...definiteString, ...undefinedNumber };
->undefinedUnionStops : Symbol(undefinedUnionStops, Decl(objectSpreadStrictNull.ts, 13, 7))
->sn : Symbol(sn, Decl(objectSpreadStrictNull.ts, 13, 30))
->definiteBoolean : Symbol(definiteBoolean, Decl(objectSpreadStrictNull.ts, 0, 11))
->definiteString : Symbol(definiteString, Decl(objectSpreadStrictNull.ts, 1, 37))
->undefinedNumber : Symbol(undefinedNumber, Decl(objectSpreadStrictNull.ts, 5, 48))
-
-    let undefinedUnionDuplicates: { sn: string | number } = { ...definiteBoolean, ...definiteString, ...undefinedString, ...undefinedNumber };
->undefinedUnionDuplicates : Symbol(undefinedUnionDuplicates, Decl(objectSpreadStrictNull.ts, 14, 7))
->sn : Symbol(sn, Decl(objectSpreadStrictNull.ts, 14, 35))
->definiteBoolean : Symbol(definiteBoolean, Decl(objectSpreadStrictNull.ts, 0, 11))
->definiteString : Symbol(definiteString, Decl(objectSpreadStrictNull.ts, 1, 37))
->undefinedString : Symbol(undefinedString, Decl(objectSpreadStrictNull.ts, 4, 36))
->undefinedNumber : Symbol(undefinedNumber, Decl(objectSpreadStrictNull.ts, 5, 48))
-
-    let allUndefined: { sn: string | number | undefined } = { ...undefinedString, ...undefinedNumber };
->allUndefined : Symbol(allUndefined, Decl(objectSpreadStrictNull.ts, 15, 7))
->sn : Symbol(sn, Decl(objectSpreadStrictNull.ts, 15, 23))
->undefinedString : Symbol(undefinedString, Decl(objectSpreadStrictNull.ts, 4, 36))
->undefinedNumber : Symbol(undefinedNumber, Decl(objectSpreadStrictNull.ts, 5, 48))
-
-    let undefinedWithOptionalContinues: { sn: string | number | boolean } = { ...definiteBoolean, ...undefinedString, ...optionalNumber };
->undefinedWithOptionalContinues : Symbol(undefinedWithOptionalContinues, Decl(objectSpreadStrictNull.ts, 17, 7))
->sn : Symbol(sn, Decl(objectSpreadStrictNull.ts, 17, 41))
->definiteBoolean : Symbol(definiteBoolean, Decl(objectSpreadStrictNull.ts, 0, 11))
->undefinedString : Symbol(undefinedString, Decl(objectSpreadStrictNull.ts, 4, 36))
->optionalNumber : Symbol(optionalNumber, Decl(objectSpreadStrictNull.ts, 3, 36))
-}
-
diff --git a/tests/baselines/reference/objectSpreadStrictNull.types b/tests/baselines/reference/objectSpreadStrictNull.types
deleted file mode 100644
index f70f0a9cad..0000000000
--- a/tests/baselines/reference/objectSpreadStrictNull.types
+++ /dev/null
@@ -1,87 +0,0 @@
-=== tests/cases/conformance/types/spread/objectSpreadStrictNull.ts ===
-function f(
->f : (definiteBoolean: { sn: boolean; }, definiteString: { sn: string; }, optionalString: { sn?: string | undefined; }, optionalNumber: { sn?: number | undefined; }, undefinedString: { sn: string | undefined; }, undefinedNumber: { sn: number | undefined; }) => void
-
-    definiteBoolean: { sn: boolean },
->definiteBoolean : { sn: boolean; }
->sn : boolean
-
-    definiteString: { sn: string },
->definiteString : { sn: string; }
->sn : string
-
-    optionalString: { sn?: string },
->optionalString : { sn?: string | undefined; }
->sn : string | undefined
-
-    optionalNumber: { sn?: number },
->optionalNumber : { sn?: number | undefined; }
->sn : number | undefined
-
-    undefinedString: { sn: string | undefined },
->undefinedString : { sn: string | undefined; }
->sn : string | undefined
-
-    undefinedNumber: { sn: number | undefined }) {
->undefinedNumber : { sn: number | undefined; }
->sn : number | undefined
-
-    // optional
-    let optionalUnionStops: { sn: string | number } = { ...definiteBoolean, ...definiteString, ...optionalNumber };
->optionalUnionStops : { sn: string | number; }
->sn : string | number
->{ ...definiteBoolean, ...definiteString, ...optionalNumber } : { sn: string | number; }
->definiteBoolean : { sn: boolean; }
->definiteString : { sn: string; }
->optionalNumber : { sn?: number | undefined; }
-
-    let optionalUnionDuplicates: { sn: string | number } = { ...definiteBoolean, ...definiteString, ...optionalString, ...optionalNumber };
->optionalUnionDuplicates : { sn: string | number; }
->sn : string | number
->{ ...definiteBoolean, ...definiteString, ...optionalString, ...optionalNumber } : { sn: string | number; }
->definiteBoolean : { sn: boolean; }
->definiteString : { sn: string; }
->optionalString : { sn?: string | undefined; }
->optionalNumber : { sn?: number | undefined; }
-
-    let allOptional: { sn?: string | number } = { ...optionalString, ...optionalNumber };
->allOptional : { sn?: string | number | undefined; }
->sn : string | number | undefined
->{ ...optionalString, ...optionalNumber } : { sn?: string | number | undefined; }
->optionalString : { sn?: string | undefined; }
->optionalNumber : { sn?: number | undefined; }
-
-    // undefined
-    let undefinedUnionStops: { sn: string | number } = { ...definiteBoolean, ...definiteString, ...undefinedNumber };
->undefinedUnionStops : { sn: string | number; }
->sn : string | number
->{ ...definiteBoolean, ...definiteString, ...undefinedNumber } : { sn: string | number; }
->definiteBoolean : { sn: boolean; }
->definiteString : { sn: string; }
->undefinedNumber : { sn: number | undefined; }
-
-    let undefinedUnionDuplicates: { sn: string | number } = { ...definiteBoolean, ...definiteString, ...undefinedString, ...undefinedNumber };
->undefinedUnionDuplicates : { sn: string | number; }
->sn : string | number
->{ ...definiteBoolean, ...definiteString, ...undefinedString, ...undefinedNumber } : { sn: string | number; }
->definiteBoolean : { sn: boolean; }
->definiteString : { sn: string; }
->undefinedString : { sn: string | undefined; }
->undefinedNumber : { sn: number | undefined; }
-
-    let allUndefined: { sn: string | number | undefined } = { ...undefinedString, ...undefinedNumber };
->allUndefined : { sn: string | number | undefined; }
->sn : string | number | undefined
->{ ...undefinedString, ...undefinedNumber } : { sn: string | number | undefined; }
->undefinedString : { sn: string | undefined; }
->undefinedNumber : { sn: number | undefined; }
-
-    let undefinedWithOptionalContinues: { sn: string | number | boolean } = { ...definiteBoolean, ...undefinedString, ...optionalNumber };
->undefinedWithOptionalContinues : { sn: string | number | boolean; }
->sn : string | number | boolean
->{ ...definiteBoolean, ...undefinedString, ...optionalNumber } : { sn: string | number | boolean; }
->definiteBoolean : { sn: boolean; }
->undefinedString : { sn: string | undefined; }
->optionalNumber : { sn?: number | undefined; }
-}
-