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import { Interface } from '../index.js'
export default function compose(...ifaces: Interface[]): Interface {
const allKeys = new Set<keyof Interface>()
for (const iface of ifaces) {
for (const key of Object.keys(iface)) {
allKeys.add(key as keyof Interface)
}
}
const composed: any = {}
for (const key of allKeys) {
if (key.startsWith('filter')) {
composed[key] = async (items: any, ...args: any[]) => {
for (const iface of ifaces) {
const anyIface = iface as any
if (anyIface[key]) {
items = await anyIface[key](items, ...args)
}
}
return items
}
} else {
composed[key] = async (...args: any[]) => {
for (const iface of ifaces) {
const anyIface = iface as any
if (anyIface[key]) {
await anyIface[key](...args)
}
}
}
}
}
return composed
}
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