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fix merged twice bug when passing extended constructor to … · vuejs/vue@5371617 · GitHub

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lines changed Original file line number Diff line number Diff line change

@@ -382,13 +382,13 @@ export function mergeOptions (

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}

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if (typeof child === 'function') {

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child = child.options

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child = child.extendOptions

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}

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normalizeProps(child, vm)

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normalizeInject(child, vm)

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normalizeDirectives(child)

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// Apply extends and mixins on the child options,

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// but only if it is a raw options object that isn't

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// the result of another mergeOptions call.

Original file line number Diff line number Diff line change

@@ -109,4 +109,32 @@ describe('Options mixins', () => {

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expect(vm.b).toBeDefined()

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expect(vm.$options.directives.c).toBeDefined()

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})

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it('should not mix global mixined lifecycle hook twice', () => {

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const spy = jasmine.createSpy('global mixed in lifecycle hook')

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Vue.mixin({

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created() {

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spy()

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}

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})

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const mixin1 = Vue.extend({

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methods: {

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a() {}

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}

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})

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const mixin2 = Vue.extend({

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mixins: [mixin1],

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})

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const Child = Vue.extend({

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mixins: [mixin2],

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})

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const vm = new Child()

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expect(typeof vm.$options.methods.a).toBe('function')

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expect(spy.calls.count()).toBe(1)

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})

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})

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