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fix(compiler): warn when inline-template component has no children (fixvuejs#6703) (vuejs#6715)

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Lines changed: 1 addition & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -309,7 +309,7 @@ function genDirectives (el: ASTElement, state: CodegenState): string \| void {`
`309`	`309`	`functiongenInlineTemplate(el:ASTElement,state:CodegenState): ?string{`
`310`	`310`	`constast=el.children[0]`
`311`	`311`	`if(process.env.NODE_ENV!=='production'&&(`
`312`		`-el.children.length>1\|\|ast.type!==1`
	`312`	`+el.children.length!==1\|\|ast.type!==1`
`313`	`313`	`)){`
`314`	`314`	`state.warn('Inline-template components must have exactly one child element.')`
`315`	`315`	`}`

Lines changed: 7 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -455,7 +455,14 @@ describe('codegen', () => {`
`455`	`455`	`'<my-component inline-template><hr><hr></my-component>',`
`456`	`456`	`with(this){return _c('my-component',{inlineTemplate:{render:function(){with(this){return _c('hr')}},staticRenderFns:[]}})}`
`457`	`457`	`)`
	`458`	`+try{`
	`459`	`+assertCodegen(`
	`460`	`+'<my-component inline-template></my-component>',`
	`461`	`+''`
	`462`	`+)`
	`463`	`+}catch(e){}`
`458`	`464`	`expect('Inline-template components must have exactly one child element.').toHaveBeenWarned()`
	`465`	`+expect(console.error.calls.count()).toBe(2)`
`459`	`466`	`})`
`460`	`467`
`461`	`468`	`it('generate static trees inside v-for',()=>{`

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