Async Explicit Resource Management

Note

This is only built-ins for this proposal, using syntax support requires transpiler support.

Less than 1 minute

Explicit Resource Management

Note

This is only built-ins for this proposal, using syntax support requires transpiler support.

Less than 1 minute

setTimeout and setInterval

`setTimeout` and `setInterval`

Additional arguments fix for IE9-:

// Before:
setTimeout(log.bind(null, 42), 1000);
// After:
setTimeout(log, 1000, 42);

Less than 1 minute

Accessible Object.prototype.hasOwnProperty

Accessible `Object.prototype.hasOwnProperty`

Types

interface ObjectConstructor {
  hasOwn(object: object, key: PropertyKey): boolean;
}

Less than 1 minute

Array find from last

Types

interface Array<T> {
  findLast(callbackfn: (value: T, index: number, target: Array<T>) => boolean, thisArg?: any): T;
  findLastIndex(callbackfn: (value: T, index: number, target: Array<T>) => boolean, thisArg?: any): number;
}

interface TypedArray {
  findLast(callbackfn: (value: any, index: number, target: ) => boolean, thisArg?: any): any;
  findLastIndex(callbackfn: (value: any, index: number, target: ) => boolean, thisArg?: any): number;
}

Less than 1 minute

Array.prototype.flat & Array.prototype.flatMap

`Array.prototype.flat` & `Array.prototype.flatMap`

Types

interface Array<T> {
  flat(depthArg: number): Array<T>;
  flatMap<U>(
    mapFn: (value: T, index: number, target: Array<T>) => U | Array<U>,
    thisArg: any
  ): Array<U>;
}

Less than 1 minute

Array.prototype.includes

`Array.prototype.includes`

Types

interface Array<T> {
  includes(searchElement: T, from?: number): boolean;
}

interface TypedArray {
  includes(searchElement: number, from?: number): boolean;
}

Less than 1 minute

Symbol.asyncIterator for asynchronous iteration

`Symbol.asyncIterator` for asynchronous iteration

Types

interface SymbolConstructor {
  readonly asyncIterator: unique symbol;
}

Less than 1 minute

New collections methods

Modules

About 2 min

Symbol.metadata for decorators metadata proposal

`Symbol.metadata` for decorators metadata proposal

Module

Less than 1 minute

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