add editorconfig

.editorconfig

@@ -0,0 +1,8 @@
+root = true
+
+[*]
+charset = utf-8
+indent_size = 2
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true

src/async.ts

@@ -273,7 +273,7 @@ export namespace sum {
 
 //#region implementations
 
-abstract class BaseAsyncEnumerable<TElement> implements AsyncEnumerable<TElement> {
+export abstract class BaseAsyncEnumerable<TElement> implements AsyncEnumerable<TElement> {
   [Symbol.asyncIterator]() {
     return this.iterator();
   }

src/bitarray.ts

@@ -128,12 +128,10 @@ export class BitArray implements Iterable<boolean> {
   }
 
   public isFull() {
-    // return enumerable.sequence(this).all(bit => bit);
     return this.#bits.subarray(0, this.#wholeBytes).every(byte => byte === FULL_BYTE) && (this.#remainingBits === 0 || this.#bits[this.#wholeBytes] === this.#remainingBitsMask);
   }
 
   public isEmpty() {
-    // return enumerable.sequence(this).none(bit => bit);
     return this.#bits.every(byte => byte === 0);
   }
 
@@ -151,11 +149,6 @@ export class BitArray implements Iterable<boolean> {
   public and(other: BitArray) {
     this.#ensureSameSize(other);
 
-    // let i = 0;
-    // for (const byte of getBytes(other)) {
-    //   this.#bits[i++] &= byte;
-    // }
-
     for (let i = 0; i < this.#length; i++) {
       this.#bits[i] &= other.#bits[i];
     }
@@ -166,11 +159,6 @@ export class BitArray implements Iterable<boolean> {
   public or(other: BitArray) {
     this.#ensureSameSize(other);
 
-    // let i = 0;
-    // for (const byte of getBytes(other)) {
-    //   this.#bits[i++] |= byte;
-    // }
-
     for (let i = 0; i < this.#length; i++) {
       this.#bits[i] |= other.#bits[i];
     }
@@ -181,11 +169,6 @@ export class BitArray implements Iterable<boolean> {
   public xor(other: BitArray) {
     this.#ensureSameSize(other);
 
-    // let i = 0;
-    // for (const byte of getBytes(other)) {
-    //   this.#bits[i++] ^= byte;
-    // }
-
     for (let i = 0; i < this.#length; i++) {
       this.#bits[i] ^= other.#bits[i];
     }
@@ -208,11 +191,6 @@ export class BitArray implements Iterable<boolean> {
   public andNot(other: BitArray) {
     this.#ensureSameSize(other);
 
-    // let i = 0;
-    // for (const byte of getBytes(other)) {
-    //   this.#bits[i++] &= ~byte;
-    // }
-
     for (let i = 0; i < this.#length; i++) {
       this.#bits[i] &= ~other.#bits[i];
     }
@@ -223,14 +201,12 @@ export class BitArray implements Iterable<boolean> {
   public contains(other: BitArray) {
     this.#ensureSameSize(other);
 
-    // return enumerable.sequence(this).zip(enumerable.sequence(other)).where(([, b]) => b).all(([a, b]) => a && b);
     return arrayLike(this.#bits).zip(arrayLike(other.#bits)).all(([a, b]) => (a & b) === b);
   }
 
   public intersects(other: BitArray) {
     this.#ensureSameSize(other);
 
-    // return enumerable.sequence(this).zip(enumerable.sequence(other)).any(([a, b]) => a && b);
     return arrayLike(this.#bits).zip(arrayLike(other.#bits)).any(([a, b]) => (a & b) !== 0);
   }
 

src/collector.ts

@@ -6,11 +6,6 @@ export interface Collector<TElement, TAccumulator, TResult> {
   finalize(accumulator: TAccumulator): TResult;
 }
 
-// export interface Collector2<TElement, TResult> {
-//   accumulate(element: TElement): void;
-//   finalize(): TResult;
-// }
-
 class SimpleCollector<TElement, TAccumulator, TResult> implements Collector<TElement, TAccumulator, TResult> {
   readonly #initialize: () => TAccumulator;
   readonly #accumulate: (accumulator: TAccumulator, element: TElement) => void;

src/equality-map.ts

@@ -43,8 +43,8 @@ class NativeEqualityMap<K, V> implements EqualityMap<K, V> {
 }
 
 class CustomEqualityMap<K, V> implements EqualityMap<K, V> {
+  readonly #list: [K, V][] = [];
   readonly #keyComparer: Equater<K>;
-  readonly #list = new Array<[K, V]>();
 
   constructor(keyComparer: Equater<K>) {
     this.#keyComparer = keyComparer;
@@ -85,9 +85,7 @@ class CustomEqualityMap<K, V> implements EqualityMap<K, V> {
   }
 
   remove(key: K) {
-    const length = this.#list.length;
-
-    for (let i = 0; i < length; i++) {
+    for (let i = 0; i < this.#list.length; i++) {
       if (this.#keyComparer(key, this.#list[i][0])) {
         const removed = this.#list.splice(i, 1);
         return removed[0][1];
@@ -151,8 +149,8 @@ class NativeAsyncEqualityMap<K, V> implements AsyncEqualityMap<K, V> {
 }
 
 class CustomAsyncEqualityMap<K, V> implements AsyncEqualityMap<K, V> {
+  readonly #list: [K, V][] = [];
   readonly #keyComparer: MaybeAsyncEquater<K>;
-  readonly #list = new Array<[K, V]>();
 
   constructor(keyComparer: MaybeAsyncEquater<K>) {
     this.#keyComparer = keyComparer;
@@ -193,9 +191,7 @@ class CustomAsyncEqualityMap<K, V> implements AsyncEqualityMap<K, V> {
   }
 
   async remove(key: K) {
-    const length = this.#list.length;
-
-    for (let i = 0; i < length; i++) {
+    for (let i = 0; i < this.#list.length; i++) {
       if (await this.#keyComparer(key, this.#list[i][0])) {
         const removed = this.#list.splice(i, 1);
         return removed[0][1];

src/equality-set.ts

@@ -41,8 +41,8 @@ class NativeEqualitySet<T> implements EqualitySet<T> {
 }
 
 class CustomEqualitySet<T> implements EqualitySet<T> {
-  readonly #equater: Equater<T>;
   readonly #list: T[] = [];
+  readonly #equater: Equater<T>;
 
   constructor(equater: Equater<T>) {
     this.#equater = equater;
@@ -137,8 +137,8 @@ class NativeAsyncEqualitySet<T> implements AsyncEqualitySet<T> {
 }
 
 class CustomAsyncEqualitySet<T> implements AsyncEqualitySet<T> {
-  readonly #equater: MaybeAsyncEquater<T>;
   readonly #list: T[] = [];
+  readonly #equater: MaybeAsyncEquater<T>;
 
   constructor(equater: MaybeAsyncEquater<T>) {
     this.#equater = equater;

src/random.ts

@@ -1,19 +1,11 @@
 import { BitArray } from "./bitarray.js";
 import { asArray } from "./utils.js";
 
-export interface ElementPredicate<T = any> {
-  (index: number, obj: T): boolean;
-}
+export type ElementPredicate<T = any> = (index: number, obj: T) => boolean;
+export type ElementWeight<T = any> = (index: number, obj: T) => number;
+export type RandomGenerator = () => number;
 
-export interface ElementWeight<T = any> {
-  (index: number, obj: T): number;
-}
-
-export interface RandomGenerator {
-  (): number;
-}
-
-export interface RandomOptions<T> {
+export interface RandomOptions<T = any> {
   predicate?: ElementPredicate<T>;
   weight?: ElementWeight<T>;
   random?: RandomGenerator;
@@ -23,7 +15,7 @@ export const alwaysTrue: ElementPredicate = () => true;
 export const weightOfOne: ElementWeight = () => 1.0;
 export const mathRandom: RandomGenerator = () => Math.random();
 
-const defaultOptions = Object.freeze<Required<RandomOptions<any>>>({
+const defaultOptions = Object.freeze<Required<RandomOptions>>({
   predicate: alwaysTrue,
   weight: weightOfOne,
   random: mathRandom
@@ -50,7 +42,7 @@ function mergeOptions<T>(first: RandomOptions<T> | undefined, second: RandomOpti
 
 function withDefaultOptions<T>(options: RandomOptions<T> | undefined): Required<RandomOptions<T>> {
   if (!options) {
-    return { ...defaultOptions };
+    return defaultOptions;
   }
 
   return {
@@ -98,7 +90,7 @@ export class RandomPicker<T> {
   public constructor(elements: T[], options?: RandomOptions<T>) {
     this.#elements = elements;
     this.#flags = new BitArray(elements.length);
-    this.#options = withDefaultOptions(mergeOptions({ predicate: (i, o) => this.#flags.get(i) }, options));
+    this.#options = withDefaultOptions(mergeOptions({ predicate: i => this.#flags.get(i) }, options));
 
     this.reset();
   }

src/sync.ts

@@ -295,7 +295,7 @@ class EnumerableMarker {
 
 }
 
-abstract class BaseEnumerable<TElement> extends EnumerableMarker implements Enumerable<TElement> {
+export abstract class BaseEnumerable<TElement> extends EnumerableMarker implements Enumerable<TElement> {
   [Symbol.iterator]() {
     return this.iterator();
   }

src/utils.ts

@@ -54,8 +54,7 @@ export function defaultArrayComparer<T>(a: T, b: T) {
     return -1;
   }
 
-  const aStr = a === null ? "null" : a.toString();
-  const bStr = b === null ? "null" : b.toString();
+  const aStr = `${a}`, bStr = `${b}`;
 
   return aStr > bStr ? 1 : aStr < bStr ? -1 : 0;
 }
@@ -81,7 +80,7 @@ export function* asGenerator<T>(iterator: Iterator<T>) {
     const next = iterator.next();
 
     if (next.done) {
-      break;
+      return next.value;
     }
 
     yield next.value;
@@ -93,7 +92,7 @@ export async function* asAsyncGenerator<T>(iterator: MaybeAsyncIterator<T>) {
     const next = await iterator.next();
 
     if (next.done) {
-      break;
+      return next.value;
     }
 
     yield next.value;