polish: improve robustness of inject option

src/core/util/options.js

@@ -338,6 +338,16 @@ function normalizeInject (options: Object, vm: ?Component) {
  const normalized = options.inject = {}
  if (Array.isArray(inject)) {
  for (let i = 0; i < inject.length; i++) {
+ if (typeof inject[i] !== 'string') {
+ if (process.env.NODE_ENV !== 'production') {
+ warn(
+ `Invalid value for option "inject": expected an Array of string, ` +
+ `but found ${toRawType(inject[i])}.`,
+ vm
+ );
+ }
+ continue;
+ }
  normalized[inject[i]] = { from: inject[i] }
  }
  } else if (isPlainObject(inject)) {

test/unit/features/options/inject.spec.js

@@ -673,4 +673,19 @@ describe('Options provide/inject', () => {
  })
  expect(`Injection "constructor" not found`).toHaveBeenWarned()
  })
+
+ it('should warn when inject with none-string Array', () => {
+ const obj = { a: 1 }
+ const vm = new Vue({
+ template: `<child/>`,
+ provide: {},
+ components: {
+ child: {
+ inject: [obj],
+ template: `<div>{{ 123 }}</div>`,
+ },
+ },
+ }).$mount()
+ expect(`Invalid value for option "inject": expected an Array of string`).toHaveBeenWarned()
+ })
 })