+import { pipeline } from 'stream'
+import { URL } from 'url'
+import { promisify } from 'util'
+
+const objectConverter = (oldObject: any, keyConverter: (e: string) => string, valueConverter: (e: any) => any) => {
+ if (!oldObject || typeof oldObject !== 'object') {
+ return valueConverter(oldObject)
+ }
+
+ if (Array.isArray(oldObject)) {
+ return oldObject.map(e => objectConverter(e, keyConverter, valueConverter))
+ }
+
+ const newObject = {}
+ Object.keys(oldObject).forEach(oldKey => {
+ const newKey = keyConverter(oldKey)
+ newObject[newKey] = objectConverter(oldObject[oldKey], keyConverter, valueConverter)
+ })
+
+ return newObject
+}
+
+function mapToJSON (map: Map<any, any>) {
+ const obj: any = {}
+
+ for (const [ k, v ] of map) {
+ obj[k] = v
+ }
+
+ return obj
+}
+
+// ---------------------------------------------------------------------------