fix(defineProps): defineProps generates unnecessary array of same types (#4353)

fix #4352
2021-08-17 05:40:00 +08:00
parent 77223df2d2
commit ad66295cb3
3 changed files with 9 additions and 8 deletions
--- a/packages/compiler-sfc/src/compileScript.ts
+++ b/packages/compiler-sfc/src/compileScript.ts
@@ -1703,7 +1703,7 @@ function inferRuntimeType(
      return [
        ...new Set(
          [].concat(
-            node.types.map(t => inferRuntimeType(t, declaredTypes)) as any
+            ...(node.types.map(t => inferRuntimeType(t, declaredTypes)) as any)
          )
        )
      ]
@@ -1716,11 +1716,7 @@ function inferRuntimeType(
 }

 function toRuntimeTypeString(types: string[]) {
-  return types.some(t => t === 'null')
-    ? `null`
-    : types.length > 1
-    ? `[${types.join(', ')}]`
-    : types[0]
+  return types.length > 1 ? `[${types.join(', ')}]` : types[0]
 }

 function extractRuntimeEmits(