function tst1(){ console.log("Первый тест на TypeScript"); } tst1();

> tsc test1

> node test1

// Boolean let isDone: boolean = false; // Number let decimal: number = 6; let hex: number = 0xf00d; let binary: number = 0b1010; let octal: number = 0o744; // String let color: string = "blue"; color = 'red'; // Array let list: number[] = [1, 2, 3]; // Enum enum is a way of giving more friendly names to sets of numeric values enum Color {Red, Green, Blue} let c: Color = Color.Green; // Any let notSure: any = 4; notSure = "maybe a string instead"; notSure = false; // okay, definitely a boolean

// Named function function add(x, y) { return x + y; } // Anonymous function let myAdd = function(x, y) { return x + y; };

function add(x: number, y: number): number { return x + y; } let myAdd = function(x: number, y: number): number { return x + y; };

function buildName(firstName: string, lastName?: string) { if (lastName) return firstName + " " + lastName; else return firstName; } let result1 = buildName("Bob"); // Правильно работает let result2 = buildName("Bob", "Adams", "Sr."); // Ошибка let result3 = buildName("Bob", "Adams"); // Правильно

function buildName(firstName: string, lastName = "Smith") { return firstName + " " + lastName; } let result1 = buildName("Bob"); // Возвращает "Bob Smith" let result2 = buildName("Bob", undefined); // Возвращает "Bob Smith" let result3 = buildName("Bob", "Adams", "Sr."); // Ошибка: too many parameters let result4 = buildName("Bob", "Adams"); // Правильно

let myFunc2 = (testsParam) => {console.log(testsParam)} myFunc2("qqqqq");

interface myType1 { par1:number; par2:string; } let var22 :myType1 = {par1 :33, par2 : "Второй текст"}; console.log(var22.par1, var22.par2);

interface SquareConfig { color?: string; width?: number; } function createSquare(config: SquareConfig):{color: string; area: number} { let newSquare = {color: "white", area: 100}; if (config.color) { newSquare.color = config.color; } if(config.width) { newSquare.area = config.width * config.width; } return newSquare; } let mySquare = createSquare({color: "black"}); console.log(mySquare);

class Greeter { greeting: string; constructor(message: string) { this.greeting = message; } greet() { return "Hello, " + this.greeting; } } let  greeter = new Greeter("world");

let passcode = "secret passcode"; class Employee { private _fullName: string; get fullName(): string { return this._fullName; } set fullName(newName: string) { if (passcode && passcode == "secret passcode") { this._fullName = newName; } else { console.log("Error: Unauthorized update of employee!"); } } } let employee = new Employee(); employee.fullName = "Bob Smith"; if (employee.fullName) { console.log(employee.fullName); }

export class Employee { private _fullName: string; private _passwd: string; constructor (passwd: string) { this._passwd = passwd; } get fullName(): string { return this._fullName; } set fullName(newName: string) { if (this._passwd && this._passwd === 'secret passcode') { this._fullName = newName; } else { console.log('Error: Unauthorized update of employee!'); } } }

import { Employee } from './module1'; const passcode = 'secret passcode'; const employee = new Employee(passcode); employee.fullName = 'Bob Smith'; if (employee.fullName) { console.log(employee.fullName); }

{ "compilerOptions": { /* Basic Options */ "target": "es5", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */ "module": "commonjs", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */ // "lib": [], /* Specify library files to be included in the compilation. */ // "allowJs": true, /* Allow javascript files to be compiled. */ // "checkJs": true, /* Report errors in .js files. */ // "jsx": "preserve", /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */ // "declaration": true, /* Generates corresponding '.d.ts' file. */ // "sourceMap": true, /* Generates corresponding '.map' file. */ // "outFile": "./", /* Concatenate and emit output to single file. */ // "outDir": "./", /* Redirect output structure to the directory. */ // "rootDir": "./", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */ // "removeComments": true, /* Do not emit comments to output. */ // "noEmit": true, /* Do not emit outputs. */ // "importHelpers": true, /* Import emit helpers from 'tslib'. */ // "downlevelIteration": true, /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */ // "isolatedModules": true, /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */ /* Strict Type-Checking Options */ "strict": true, /* Enable all strict type-checking options. */ // "noImplicitAny": true, /* Raise error on expressions and declarations with an implied 'any' type. */ // "strictNullChecks": true, /* Enable strict null checks. */ // "strictFunctionTypes": true, /* Enable strict checking of function types. */ // "strictPropertyInitialization": true, /* Enable strict checking of property initialization in classes. */ // "noImplicitThis": true, /* Raise error on 'this' expressions with an implied 'any' type. */ // "alwaysStrict": true, /* Parse in strict mode and emit "use strict" for each source file. */ /* Additional Checks */ // "noUnusedLocals": true, /* Report errors on unused locals. */ // "noUnusedParameters": true, /* Report errors on unused parameters. */ // "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */ // "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */ /* Module Resolution Options */ // "moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */ // "baseUrl": "./", /* Base directory to resolve non-absolute module names. */ // "paths": {}, /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */ // "rootDirs": [], /* List of root folders whose combined content represents the structure of the project at runtime. */ // "typeRoots": [], /* List of folders to include type definitions from. */ // "types": [], /* Type declaration files to be included in compilation. */ // "allowSyntheticDefaultImports": true, /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */ "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */ // "preserveSymlinks": true, /* Do not resolve the real path of symlinks. */ /* Source Map Options */ // "sourceRoot": "./", /* Specify the location where debugger should locate TypeScript files instead of source locations. */ // "mapRoot": "./", /* Specify the location where debugger should locate map files instead of generated locations. */ // "inlineSourceMap": true, /* Emit a single file with source maps instead of having a separate file. */ // "inlineSources": true, /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */ /* Experimental Options */ // "experimentalDecorators": true, /* Enables experimental support for ES7 decorators. */ // "emitDecoratorMetadata": true, /* Enables experimental support for emitting type metadata for decorators. */ } }