41 lines
1.1 KiB
JavaScript
41 lines
1.1 KiB
JavaScript
|
|
/* ==== ECMAScript 6 variant ==== */
|
|
|
|
export default (base, ...mixins) => {
|
|
|
|
/* create aggregation class */
|
|
const merge = class __Merge extends base {
|
|
constructor (...args) {
|
|
/* call base class constructor */
|
|
super(...args)
|
|
|
|
/* call mixin's initializer */
|
|
mixins.forEach((mixin) => {
|
|
if (typeof mixin.prototype.initializer === 'function')
|
|
mixin.prototype.initializer.apply(this, args)
|
|
})
|
|
}
|
|
}
|
|
|
|
/* copy properties */
|
|
let copyProps = (target, source) => {
|
|
Object.getOwnPropertyNames(source)
|
|
.concat(Object.getOwnPropertySymbols(source))
|
|
.forEach((prop) => {
|
|
if (typeof prop.match ==='function') {
|
|
if (prop.match(/^(?:initializer|constructor|prototype|arguments|caller|name|bind|call|apply|toString|length)$/))
|
|
return
|
|
}
|
|
Object.defineProperty(target, prop, Object.getOwnPropertyDescriptor(source, prop))
|
|
})
|
|
}
|
|
|
|
/* copy all properties of all mixins into aggregation class */
|
|
mixins.forEach((mixin) => {
|
|
copyProps(merge.prototype, mixin.prototype)
|
|
copyProps(merge, mixin)
|
|
})
|
|
|
|
return merge
|
|
}
|