assets.js
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/* @flow */
import config from '../config'
import { warn, isPlainObject } from '../util/index'
export function initAssetRegisters (Vue: GlobalAPI) {
/**
* Create asset registration methods.
*/
config._assetTypes.forEach(type => {
Vue[type] = function (
id: string,
definition: Function | Object
): Function | Object | void {
if (!definition) {
return this.options[type + 's'][id]
} else {
/* istanbul ignore if */
if (process.env.NODE_ENV !== 'production') {
if (type === 'component' && config.isReservedTag(id)) {
warn(
'Do not use built-in or reserved HTML elements as component ' +
'id: ' + id
)
}
}
if (type === 'component' && isPlainObject(definition)) {
definition.name = definition.name || id
definition = this.options._base.extend(definition)
}
if (type === 'directive' && typeof definition === 'function') {
definition = { bind: definition, update: definition }
}
this.options[type + 's'][id] = definition
return definition
}
}
})
}