Fix Bugs and Add Tests

Author: graphemecluster

src/lib/es2015.core.d.ts

@@ -8,7 +8,7 @@ interface Array<T> {
      * @param thisArg If provided, it will be used as the this value for each invocation of
      * predicate. If it is not provided, undefined is used instead.
      */
-    find<S extends T>(predicate: (value: T, index: number, obj: T[]) => value is S, thisArg?: any): S | undefined;
+    find<S extends T>(predicate: (value: T, index: number, array: T[]) => value is S, thisArg?: any): S | undefined;
 
     /**
      * Returns the value of the first element in the array where predicate is true, and undefined
@@ -19,7 +19,7 @@ interface Array<T> {
      * @param thisArg If provided, it will be used as the this value for each invocation of
      * predicate. If it is not provided, undefined is used instead.
      */
-    find(predicate: (value: T, index: number, obj: T[]) => unknown, thisArg?: any): T | undefined;
+    find(predicate: (value: T, index: number, array: T[]) => unknown, thisArg?: any): T | undefined;
 
     /**
      * Returns the index of the first element in the array where predicate is true, and -1
@@ -30,7 +30,7 @@ interface Array<T> {
      * @param thisArg If provided, it will be used as the this value for each invocation of
      * predicate. If it is not provided, undefined is used instead.
      */
-    findIndex(predicate: (value: T, index: number, obj: T[]) => unknown, thisArg?: any): number;
+    findIndex(predicate: (value: T, index: number, array: T[]) => unknown, thisArg?: any): number;
 
     /**
      * Changes all array elements from `start` to `end` index to a static `value` and returns the modified array
@@ -40,7 +40,7 @@ interface Array<T> {
      * @param end index to stop filling the array at. If end is negative, it is treated as
      * length + end.
      */
-    fill(value: T, start?: number, end?: number): this;
+    fill(value: T, start?: number, end?: number): T[];
 
     /**
      * Returns the this object after copying a section of the array identified by start and end
@@ -51,7 +51,7 @@ interface Array<T> {
      * is treated as length + end.
      * @param end If not specified, length of the this object is used as its default value.
      */
-    copyWithin(target: number, start: number, end?: number): this;
+    copyWithin(target: number, start: number, end?: number): T[];
 }
 
 interface ArrayConstructor {
@@ -346,7 +346,7 @@ interface ReadonlyArray<T> {
      * @param thisArg If provided, it will be used as the this value for each invocation of
      * predicate. If it is not provided, undefined is used instead.
      */
-    find<S extends T>(predicate: (value: T, index: number, obj: readonly T[]) => value is S, thisArg?: any): S | undefined;
+    find<S extends T>(predicate: (value: T, index: number, array: readonly T[]) => value is S, thisArg?: any): S | undefined;
 
     /**
      * Returns the value of the first element in the array where predicate is true, and undefined
@@ -357,7 +357,7 @@ interface ReadonlyArray<T> {
      * @param thisArg If provided, it will be used as the this value for each invocation of
      * predicate. If it is not provided, undefined is used instead.
      */
-    find(predicate: (value: T, index: number, obj: readonly T[]) => unknown, thisArg?: any): T | undefined;
+    find(predicate: (value: T, index: number, array: readonly T[]) => unknown, thisArg?: any): T | undefined;
 
     /**
      * Returns the index of the first element in the array where predicate is true, and -1
@@ -368,7 +368,7 @@ interface ReadonlyArray<T> {
      * @param thisArg If provided, it will be used as the this value for each invocation of
      * predicate. If it is not provided, undefined is used instead.
      */
-    findIndex(predicate: (value: T, index: number, obj: readonly T[]) => unknown, thisArg?: any): number;
+    findIndex(predicate: (value: T, index: number, array: readonly T[]) => unknown, thisArg?: any): number;
 }
 
 interface RegExp {

src/lib/es2015.iterable.d.ts

@@ -223,15 +223,15 @@ interface String {
 interface Int8Array {
     [Symbol.iterator](): IterableIterator<number>;
     /**
-     * Returns an array of key, value pairs for every entry in the array
+     * Yields index, value pairs for every entry in the array.
      */
     entries(): IterableIterator<[number, number]>;
     /**
-     * Returns an list of keys in the array
+     * Yields each index in the array.
      */
     keys(): IterableIterator<number>;
     /**
-     * Returns an list of values in the array
+     * Yields each value in the array.
      */
     values(): IterableIterator<number>;
 }
@@ -257,15 +257,15 @@ interface Int8ArrayConstructor {
 interface Uint8Array {
     [Symbol.iterator](): IterableIterator<number>;
     /**
-     * Returns an array of key, value pairs for every entry in the array
+     * Yields index, value pairs for every entry in the array.
      */
     entries(): IterableIterator<[number, number]>;
     /**
-     * Returns an list of keys in the array
+     * Yields each index in the array.
      */
     keys(): IterableIterator<number>;
     /**
-     * Returns an list of values in the array
+     * Yields each value in the array.
      */
     values(): IterableIterator<number>;
 }
@@ -291,17 +291,17 @@ interface Uint8ArrayConstructor {
 interface Uint8ClampedArray {
     [Symbol.iterator](): IterableIterator<number>;
     /**
-     * Returns an array of key, value pairs for every entry in the array
+     * Yields index, value pairs for every entry in the array.
      */
     entries(): IterableIterator<[number, number]>;
 
     /**
-     * Returns an list of keys in the array
+     * Yields each index in the array.
      */
     keys(): IterableIterator<number>;
 
     /**
-     * Returns an list of values in the array
+     * Yields each value in the array.
      */
     values(): IterableIterator<number>;
 }
@@ -327,17 +327,17 @@ interface Uint8ClampedArrayConstructor {
 interface Int16Array {
     [Symbol.iterator](): IterableIterator<number>;
     /**
-     * Returns an array of key, value pairs for every entry in the array
+     * Yields index, value pairs for every entry in the array.
      */
     entries(): IterableIterator<[number, number]>;
 
     /**
-     * Returns an list of keys in the array
+     * Yields each index in the array.
      */
     keys(): IterableIterator<number>;
 
     /**
-     * Returns an list of values in the array
+     * Yields each value in the array.
      */
     values(): IterableIterator<number>;
 }
@@ -363,15 +363,15 @@ interface Int16ArrayConstructor {
 interface Uint16Array {
     [Symbol.iterator](): IterableIterator<number>;
     /**
-     * Returns an array of key, value pairs for every entry in the array
+     * Yields index, value pairs for every entry in the array.
      */
     entries(): IterableIterator<[number, number]>;
     /**
-     * Returns an list of keys in the array
+     * Yields each index in the array.
      */
     keys(): IterableIterator<number>;
     /**
-     * Returns an list of values in the array
+     * Yields each value in the array.
      */
     values(): IterableIterator<number>;
 }
@@ -397,15 +397,15 @@ interface Uint16ArrayConstructor {
 interface Int32Array {
     [Symbol.iterator](): IterableIterator<number>;
     /**
-     * Returns an array of key, value pairs for every entry in the array
+     * Yields index, value pairs for every entry in the array.
      */
     entries(): IterableIterator<[number, number]>;
     /**
-     * Returns an list of keys in the array
+     * Yields each index in the array.
      */
     keys(): IterableIterator<number>;
     /**
-     * Returns an list of values in the array
+     * Yields each value in the array.
      */
     values(): IterableIterator<number>;
 }
@@ -431,15 +431,15 @@ interface Int32ArrayConstructor {
 interface Uint32Array {
     [Symbol.iterator](): IterableIterator<number>;
     /**
-     * Returns an array of key, value pairs for every entry in the array
+     * Yields index, value pairs for every entry in the array.
      */
     entries(): IterableIterator<[number, number]>;
     /**
-     * Returns an list of keys in the array
+     * Yields each index in the array.
      */
     keys(): IterableIterator<number>;
     /**
-     * Returns an list of values in the array
+     * Yields each value in the array.
      */
     values(): IterableIterator<number>;
 }
@@ -465,15 +465,15 @@ interface Uint32ArrayConstructor {
 interface Float32Array {
     [Symbol.iterator](): IterableIterator<number>;
     /**
-     * Returns an array of key, value pairs for every entry in the array
+     * Yields index, value pairs for every entry in the array.
      */
     entries(): IterableIterator<[number, number]>;
     /**
-     * Returns an list of keys in the array
+     * Yields each index in the array.
      */
     keys(): IterableIterator<number>;
     /**
-     * Returns an list of values in the array
+     * Yields each value in the array.
      */
     values(): IterableIterator<number>;
 }
@@ -499,15 +499,15 @@ interface Float32ArrayConstructor {
 interface Float64Array {
     [Symbol.iterator](): IterableIterator<number>;
     /**
-     * Returns an array of key, value pairs for every entry in the array
+     * Yields index, value pairs for every entry in the array.
      */
     entries(): IterableIterator<[number, number]>;
     /**
-     * Returns an list of keys in the array
+     * Yields each index in the array.
      */
     keys(): IterableIterator<number>;
     /**
-     * Returns an list of values in the array
+     * Yields each value in the array.
      */
     values(): IterableIterator<number>;
 }

src/lib/es2019.array.d.ts

@@ -38,7 +38,7 @@ interface Array<T> {
      * @param thisArg An object to which the this keyword can refer in the callback function. If
      * thisArg is omitted, undefined is used as the this value.
      */
-    flatMap<U> (callback: (value: T, index: number, array: T[]) => U | ReadonlyArray<U>, thisArg?: any): U[]
+    flatMap<U>(callback: (value: T, index: number, array: T[]) => U | ReadonlyArray<U>, thisArg?: any): U[]
 
     /**
      * Returns a new array with all sub-array elements concatenated into it recursively up to the

src/lib/es2020.bigint.d.ts

@@ -350,13 +350,13 @@ interface BigInt64Array {
      */
     subarray(begin?: number, end?: number): BigInt64Array;
 
-    /** Converts the array to a string by using the current locale. */
+    /** Returns a string representation of the array in the current locale. */
     toLocaleString(): string;
 
     /** Returns a string representation of the array. */
     toString(): string;
 
-    /** Returns the primitive value of the specified object. */
+    /** Returns the primitive value of the array. */
     valueOf(): BigInt64Array;
 
     /** Yields each value in the array. */
@@ -627,13 +627,13 @@ interface BigUint64Array {
      */
     subarray(begin?: number, end?: number): BigUint64Array;
 
-    /** Converts the array to a string by using the current locale. */
+    /** Returns a string representation of the array in the current locale. */
     toLocaleString(): string;
 
     /** Returns a string representation of the array. */
     toString(): string;
 
-    /** Returns the primitive value of the specified object. */
+    /** Returns the primitive value of the array. */
     valueOf(): BigUint64Array;
 
     /** Yields each value in the array. */