fix: do not drop SFC runtime behavior code in global builds

fix #873

packages/runtime-core/src/componentProxy.ts

@@ -124,7 +124,6 @@ export const PublicInstanceProxyHandlers: ProxyHandler<any> = {
       }
       return publicGetter(target)
     } else if (
-      __BUNDLER__ &&
       (cssModule = type.__cssModules) &&
       (cssModule = cssModule[key])
     ) {

packages/runtime-core/src/helpers/scopeId.ts

@@ -8,20 +8,15 @@ export let currentScopeId: string | null = null
 const scopeIdStack: string[] = []
 
 export function pushScopeId(id: string) {
-  if (__BUNDLER__) {
   scopeIdStack.push((currentScopeId = id))
 }
-}
 
 export function popScopeId() {
-  if (__BUNDLER__) {
   scopeIdStack.pop()
   currentScopeId = scopeIdStack[scopeIdStack.length - 1] || null
 }
-}
 
 export function withScopeId(id: string): <T extends Function>(fn: T) => T {
-  if (__BUNDLER__) {
   return ((fn: Function) =>
     withCtx(function(this: any) {
       pushScopeId(id)
@@ -29,7 +24,4 @@ export function withScopeId(id: string): <T extends Function>(fn: T) => T {
       popScopeId()
       return res
     })) as any
-  } else {
-    return undefined as any
-  }
 }

packages/runtime-core/src/renderer.ts

@@ -563,7 +563,6 @@ function baseCreateRenderer(
       }
 
       // scopeId
-      if (__BUNDLER__) {
       if (scopeId) {
         hostSetScopeId(el, scopeId)
       }
@@ -573,7 +572,6 @@ function baseCreateRenderer(
       if (treeOwnerId && treeOwnerId !== scopeId) {
         hostSetScopeId(el, treeOwnerId + '-s')
       }
-      }
 
       // children
       if (shapeFlag & ShapeFlags.TEXT_CHILDREN) {