asyncFactory: Function | void; // async component factory functionasyncMeta: Object | void;isAsyncPlaceholder: boolean;ssrContext: Object | void;fnContext: Component | void; // real context vm for functional nodesfnOptions: ?ComponentOptions; // for SSR cachingfnScopeId: ?string; // functional...
: string; } // 非空断言操作符 function nonNull(e?: Entity) { const s = e!.name; // 发生断言,抛出TypeError } try { nonNull(obj); } catch (e) { console.error("nonNull catch", e); // TypeError: Cannot read property 'name' of null } // 可选链 function optionalChaining(e?: E...
ban-type: [true, ["object","User {} instead."],["string"]] //禁止类型 member-access: [true , "no-public"||"check-accessor"|| "check-constructor" || "check-parameter-property" ] , //类成员必须声明 private public ... member-order: [true, {order:...}], //类声明排序 no-any...
JavaScript 的带来的困惑。...从 TypeScript 的名字就可以看出来,「类型」是其最核心的特性,TypeScript 也主要致力于解决JavaScript 的类型混乱问题。...= 1; foo.split(' '); // Property 'split' does not exist on type 'number'. // 编译时会报错(数字没有 split 方法),无法通过编译...大部分 Java...
let suits = ["hearts", "spades", "clubs", "diamonds"]; function pickCard(x: { suit: string; card: number }[]): number; function pickCard(x: number): { suit: string; card: number }; function pickCard(x: any): any { // Check to see if we're working with an object/array ...
import "reflect-metadata"; export const SerializeMetaKey = "Serialize"; //序列化装饰器 export function Serialize(name?: string) { return (target: Object, property: string): void => { Reflect.defineMetadata(SerializeMetaKey, name || property, target, property); }; } 代码似乎什么都没干,就...
{includeInlayParameterNameHints:'none'|'literals'|'all';includeInlayParameterNameHintsWhenArgumentMatchesName:boolean;includeInlayFunctionParameterTypeHints:boolean;includeInlayVariableTypeHints:boolean;includeInlayVariableTypeHintsWhenTypeMatchesName:boolean;includeInlayPropertyDeclarationTypeHints:boolean;includeInlay...
}returnnames.map(name => {url.searchParams.set("name", name)// ~~~// error!// Property 'searchParams' does not exist on type 'string | URL'.returnurl.toString(); }); } Here, TypeScript decided that it wasn’t "safe" to assume thaturlwasactuallyaURLobject in our callback functi...
status: overrides && overrides.hasOwnProperty('status') ? overrides.status! : Api.Status.Online, } typeNamesMapping ({ [typeName: string]: string }, defaultValue:{}) Allows you to define mappings to rename the types. This is useful when you want to override the generated type name. For ...
Convert parameters to destructured object- Rewrite a function that takes a long list of arguments to take a single arguments object. Generate get and set accessors- Encapsulate a selected class property by generating a getter and setter for it. ...