reference doc in component data function warning (vuejs#4378)

chrisvfritz · yyx990803 · commit 4120d1adc210 · 2016-12-04T08:40:06.000+01:00
diff --git a/src/core/instance/state.js b/src/core/instance/state.js
@@ -77,7 +77,8 @@ function initData (vm: Component) {
   if (!isPlainObject(data)) {
     data = {}
     process.env.NODE_ENV !== 'production' && warn(
-      'data functions should return an object.',
+      'data functions should return an object:\n' +
+      'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function',
       vm
     )
   }

Original file line number	Diff line number	Diff line change
`@@ -77,7 +77,8 @@ function initData (vm: Component) {`
`77`	`77`	`if (!isPlainObject(data)) {`
`78`	`78`	`data = {}`
`79`	`79`	`process.env.NODE_ENV !== 'production' && warn(`
`80`		`- 'data functions should return an object.',`
	`80`	`+ 'data functions should return an object:\n' +`
	`81`	`+ 'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function',`
`81`	`82`	`vm`
`82`	`83`	`)`
`83`	`84`	`}`