}// 👍 const enumconstenumRoles{Admin,User,Operator, }//number enumenumDirection{Up=1,Down,Left,Right}// TypeScript enum 枚举实现原理,反向映射// Direction ={// 1: "Up", 2: "Down", 3: "Left", 4: "Right",// Up: 1, Down: 2, Left: 3, Right: 4,// }logString(Level.A);...
number enum with change index enum DirectionIndex { Up = 3, Down, Left, Right } // ??? string & number mixed enum enum DirectionMixed { Up = "up", Down = 1, Left, Right } // ??? string enum enum Level { A = "perfect", B = "good", C = "bad", } // ??? const enu...
type DescribableFunction = { description:string(someArg:string):string// call signature}functiondoSomething(fn: DescribableFunction):void{ console.log(fn.description +' returned '+fn(6)); } ArkTS classDescribableFunction{description:stringpublicinvoke(someArg:string):string{...
To view the description of a problem in the editor, hover over the highlighted code. To resolve the detected problem, click ESLint: Fix '<rule name>' or press AltShiftEnter. To resolve all the detected problems in the current file, click More actions (AltEnter) and select ESLint: Fix ...
"preserveConstEnums": true }, "include": ["src/**/*"] } For a list of the recommended bases, check the documentationhereor in thisrepository. Getting into action So, now that we know how to configure typescript, let’s set up a small project. ...
The quickstart application is preconfigured with the dependent@syncfusion/ej2package in the~/package.jsonfile. Use the following command to install the dependent npm packages from the command prompt. NPM npm install Import the Syncfusion CSS styles ...
enum Types { Foo, Bar } interface Things { [k in Types]: boolean; quu: string; } then is there a suggested alternative pattern that achieves the same goal -- namely being able to define an object shape where the key may be any of a list of acceptable values?
npm install reflect-metadata and make sure to import it before you use routing-controllers: import'reflect-metadata'; Install framework: a. If you want to use routing-controllers withexpress.js, then install it and all required dependencies: ...
close]: '关', [StatusEnum.open]: '开', }; const text = STATUS_TEXT_MAP[StatusEnum....
(function (Enum) { Enum[Enum["A"] = 0] = "A"; Enum[Enum["B"] = 1] = "B"; Enum["C"] = "C"; Enum["D"] = "D"; Enum[Enum["E"] = 8] = "E"; Enum[Enum["F"] = 9] = "F"; })(Enum || (Enum = {})); 通过观察上述生成的 ES5 代码,我们可以发现数字枚举相对...