Support union of non identifier serialized type node with null/undefined/never

tests/baselines/reference/metadataOfUnionWithNull.js

@@ -25,6 +25,21 @@ class B {
 
     @PropDeco
     d: undefined | null;
+
+    @PropDeco
+    e: symbol | null;
+
+    @PropDeco
+    f: symbol | A;
+
+    @PropDeco
+    g: A | null;
+
+    @PropDeco
+    h: null | B;
+
+    @PropDeco
+    j: null | symbol;
 }
 
 //// [metadataOfUnionWithNull.js]
@@ -54,7 +69,7 @@ __decorate([
 ], B.prototype, "x");
 __decorate([
     PropDeco,
-    __metadata("design:type", Object)
+    __metadata("design:type", Boolean)
 ], B.prototype, "y");
 __decorate([
     PropDeco,
@@ -66,7 +81,7 @@ __decorate([
 ], B.prototype, "a");
 __decorate([
     PropDeco,
-    __metadata("design:type", Object)
+    __metadata("design:type", void 0)
 ], B.prototype, "b");
 __decorate([
     PropDeco,
@@ -76,3 +91,23 @@ __decorate([
     PropDeco,
     __metadata("design:type", void 0)
 ], B.prototype, "d");
+__decorate([
+    PropDeco,
+    __metadata("design:type", typeof Symbol === "function" ? Symbol : Object)
+], B.prototype, "e");
+__decorate([
+    PropDeco,
+    __metadata("design:type", Object)
+], B.prototype, "f");
+__decorate([
+    PropDeco,
+    __metadata("design:type", A)
+], B.prototype, "g");
+__decorate([
+    PropDeco,
+    __metadata("design:type", B)
+], B.prototype, "h");
+__decorate([
+    PropDeco,
+    __metadata("design:type", typeof Symbol === "function" ? Symbol : Object)
+], B.prototype, "j");

tests/baselines/reference/metadataOfUnionWithNull.symbols

@@ -53,4 +53,37 @@ class B {
 
     d: undefined | null;
 >d : Symbol(B.d, Decl(metadataOfUnionWithNull.ts, 22, 17))
+
+    @PropDeco
+>PropDeco : Symbol(PropDeco, Decl(metadataOfUnionWithNull.ts, 0, 0))
+
+    e: symbol | null;
+>e : Symbol(B.e, Decl(metadataOfUnionWithNull.ts, 25, 24))
+
+    @PropDeco
+>PropDeco : Symbol(PropDeco, Decl(metadataOfUnionWithNull.ts, 0, 0))
+
+    f: symbol | A;
+>f : Symbol(B.f, Decl(metadataOfUnionWithNull.ts, 28, 21))
+>A : Symbol(A, Decl(metadataOfUnionWithNull.ts, 0, 63))
+
+    @PropDeco
+>PropDeco : Symbol(PropDeco, Decl(metadataOfUnionWithNull.ts, 0, 0))
+
+    g: A | null;
+>g : Symbol(B.g, Decl(metadataOfUnionWithNull.ts, 31, 18))
+>A : Symbol(A, Decl(metadataOfUnionWithNull.ts, 0, 63))
+
+    @PropDeco
+>PropDeco : Symbol(PropDeco, Decl(metadataOfUnionWithNull.ts, 0, 0))
+
+    h: null | B;
+>h : Symbol(B.h, Decl(metadataOfUnionWithNull.ts, 34, 16))
+>B : Symbol(B, Decl(metadataOfUnionWithNull.ts, 3, 1))
+
+    @PropDeco
+>PropDeco : Symbol(PropDeco, Decl(metadataOfUnionWithNull.ts, 0, 0))
+
+    j: null | symbol;
+>j : Symbol(B.j, Decl(metadataOfUnionWithNull.ts, 37, 16))
 }

tests/baselines/reference/metadataOfUnionWithNull.types

@@ -56,5 +56,42 @@ class B {
 
     d: undefined | null;
 >d : null
+>null : null
+
+    @PropDeco
+>PropDeco : (target: Object, propKey: string | symbol) => void
+
+    e: symbol | null;
+>e : symbol
+>null : null
+
+    @PropDeco
+>PropDeco : (target: Object, propKey: string | symbol) => void
+
+    f: symbol | A;
+>f : symbol | A
+>A : A
+
+    @PropDeco
+>PropDeco : (target: Object, propKey: string | symbol) => void
+
+    g: A | null;
+>g : A
+>A : A
+>null : null
+
+    @PropDeco
+>PropDeco : (target: Object, propKey: string | symbol) => void
+
+    h: null | B;
+>h : B
+>null : null
+>B : B
+
+    @PropDeco
+>PropDeco : (target: Object, propKey: string | symbol) => void
+
+    j: null | symbol;
+>j : symbol
 >null : null
 }

tests/cases/compiler/metadataOfUnionWithNull.ts

@@ -26,4 +26,19 @@ class B {
 
     @PropDeco
     d: undefined | null;
+
+    @PropDeco
+    e: symbol | null;
+
+    @PropDeco
+    f: symbol | A;
+
+    @PropDeco
+    g: A | null;
+
+    @PropDeco
+    h: null | B;
+
+    @PropDeco
+    j: null | symbol;
 }