type errors

src/rt/rfwfs/collection.ts

@@ -14,33 +14,45 @@ interface EntryCollection<T> extends EntryCollectionManipulate {
 	readonly inner: Files<T>
 }
 
-function entry_trait<T extends Entry<T>>() {
-	const trait = {} as EntryCollection<T>
-	trait.sort = function() {
-		this.inner.sort((a,z) => a.name.localeCompare(z.name))
+function sort<E extends Entry<E>>(self: EntryCollection<E>) {
+	self.inner.sort((a,z) => a.name.localeCompare(z.name))
 }
-	trait.push = function(entry) {
-		const no_duplicates = entry_search(this.inner, entry.name)
+
+function push<E extends Entry<E>, T extends Entry<T>>(self: EntryCollection<E>, entry: Entry<T>) {
+	const no_duplicates = entry_search(self.inner, entry.name)
 	if (!no_duplicates) {
-			this.push(entry)
-			this.sort()
+		self.push(entry)
+		self.sort()
 		return true
 	}
 	return false
 }
-	trait.pop = function(file_name) {
-		const file_search = entry_search(this.inner, file_name)
+
+function get<E extends Entry<E>>(self: EntryCollection<E>, file_name: string) {
+	const file_search = entry_search(self.inner, file_name)
+	return file_search ? file_search.result : undefined
+}
+
+function pop<E extends Entry<E>>(self: EntryCollection<E>, file_name: string) {
+	const file_search = entry_search(self.inner, file_name)
 	if (file_search) {
-			this.inner.splice(file_search.index, 1)
+		self.inner.splice(file_search.index, 1)
 		return file_search.result
 	}
-		return
+	return undefined
 }
-	return trait
+
+function entry_collection<E extends Entry<E>>(inner: Files<E>): EntryCollection<E> {
+	const collection = { inner: inner } as EntryCollection<E>
+	collection.sort = function()          { return sort(this) }
+	collection.push = function(entry)     { return push(this, entry) }
+	collection.get  = function(file_name) { return get(this, file_name) }
+	collection.pop  = function(file_name) { return pop(this, file_name) }
+	return collection
 }
 
 export {
-	entry_trait,
+	entry_collection,
 	type EntryCollection,
 	type Files,
 }

src/rt/rfwfs/index.ts

@@ -1,15 +1,15 @@
 import { type Entry } from "./main"
 import { type Files } from "./collection"
 
-interface SearchResult<T> {
+interface Wrap<T extends Entry<T>> {
 	readonly result: T,
 	readonly index: number
 }
-function wrap_result<T>(result: T, index: number): SearchResult<T> {
+function wrap_result<T extends Entry<T>>(result: T, index: number): Wrap<T> {
 	return { result: result, index: index }
 }
 
-export default function entry_search<T>(cloned_file_collection: Files<T>, file_name: string): SearchResult<Entry<T>> | undefined {
+export default function entry_search<T extends Entry<T>>(cloned_file_collection: Files<T>, file_name: string): Wrap<Entry<T>> | undefined {
 	let start = 0
 	let end = cloned_file_collection.length-1
 	while (start<=end) {