chore: fix flow

yyx990803 · hefeng · commit 3fc29bcc2993 · 2019-01-25T17:42:31.000+08:00
diff --git a/src/core/util/next-tick.js b/src/core/util/next-tick.js
@@ -86,7 +86,7 @@ export function withMacroTask (fn: Function): Function {
   })
 }
 
-export function nextTick (cb?: Function, ctx?: Object): ?Promise {
+export function nextTick (cb?: Function, ctx?: Object) {
   let _resolve
   callbacks.push(() => {
     if (cb) {

Original file line number	Diff line number	Diff line change
`@@ -86,7 +86,7 @@ export function withMacroTask (fn: Function): Function {`
`86`	`86`	`})`
`87`	`87`	`}`
`88`	`88`
`89`		`-export function nextTick (cb?: Function, ctx?: Object): ?Promise {`
	`89`	`+export function nextTick (cb?: Function, ctx?: Object) {`
`90`	`90`	`let _resolve`
`91`	`91`	`callbacks.push(() => {`
`92`	`92`	`if (cb) {`