To specify another value, you have to use a JSDoc comment block. Introduce Variable Use the Introduce Variable refactoring to replace an expression with a function-scoped variable (var), a block-scoped variable (let), or a block-scoped constant (const). This refactoring makes your source...
declarefunctionMaybePromise<T>(value:T):T|Promise<T>|PromiseLike<T>;asyncfunctiondoSomething():Promise<[number,number]>{constresult=awaitPromise.all([MaybePromise(100),MaybePromise(200)]);// Error!/// [number | Promise<100>, number | Promise<200>]/// is not assignable to type/// [nu...
} export default function doSomething(options: Options): void; Changing the export default to an export = creates an error: export interface Options { // ... } declare function doSomething(options: Options): void; export = doSomething; // ^^^ // Error: An export assignment cannot be us...
declarefunctionMaybePromise<T>(value:T):T|Promise<T>|PromiseLike<T>;asyncfunctiondoSomething():Promise<[number,number]>{constresult=awaitPromise.all([MaybePromise(100),MaybePromise(200)]);// Error!/// [number | Promise<100>, number | Promise<200>]/// is not assignable to type/// [nu...
"use strict";Object.defineProperty(exports,"__esModule",{value:true});exports.hello=void0;constworld='world';functionhello(who=world){return`Hello${who}!`;}exports.hello=hello; Copy Running the TypeScript compiler every time you make a change can be tedious. To fix this, you can put th...
functionhandler(arg:string){// ...}functiondoSomething(callback:(arg1:string,arg2:number)=>void){callback('hello',42);}// Expected error because 'doSomething' wants a callback of// 2 parameters, but 'handler' only accepts 1doSomething(handler); This...
Description : There is currently no Chinese translation of the latest official documents of TypeScript on the Internet, so there is such a translat...
Setting:typescript.inlayHints.functionLikeReturnTypes.enabled References CodeLens The TypeScript references CodeLens displays an inline count of reference for classes, interfaces, methods, properties, and exported objects: You can enable this by setting"typescript.referencesCodeLens.enabled": truein the...
; }; return Foo; }()); exports.sqr = function (x) { return x * x; }; Object.defineProperty(exports, "__esModule", { value: true }); exports.default = Subscription_1.Subscription; Better IntelliSenseJavaScript IntelliSense in Visual Studio 2017 will now display a lot ...
functiongetStickSetting(controls:CockpitControls){const{leftSideStick,rightSideStick}=controls;if(leftSideStick===0){returnrightSideStick;}returnleftSideStick;} But there’s a problem with this implementation: we can only be confident returning the left setting if the right one is neutral. So you sh...