/// <reference types="node" /> // TypeScript Test class Student { fullName: string; constructor(public firstName: string, public middleInitial: string, public lastName: string) { this.fullName = firstName + " " + middleInitial + " " + lastName; } } interface Person { firstName: string; lastName: string; } function greeter(person : Person) { return "Hello, " + person.firstName + " " + person.lastName; } let user = new Student("Jane", "M.", "User"); document.body.innerHTML = greeter(user); JSON.stringify() console.log("Hello world"); import http = require("http"); import path = require("path"); import URL = url.URL; import { Readable, Writable } from "stream"; import { isBuffer, isString, isObject } from "util"; const port = 8__88___8; const baseUrl = new URL(`http://localhost:${port}/`); const rootDir = path.dirname(__dirname); const defaultBrowser = os.platform() === "win32" ? "edge" : "chrome"; let browser: "edge" | "chrome" | "none" = defaultBrowser; let grep: string | undefined; interface FileBasedTestConfiguration { [setting: string]: string; } function swapCase(s: string): string { return s.replace(/\w/g, (ch) => { const up = ch.toUpperCase(); return ch === up ? ch.toLowerCase() : up; }); } for (var i in pieces) { switch (true) { case /^\"?Accession\"?/.test(pieces[i]): numeration[0] = i; break; } } const enum ResponseCode { Success = 200, BadRequest = 400 } // Substitutions export function isInOpenInterval(start: number, end: number) { return tersible(a => a > start && a < end, () => `(${start}...${end})`) } const bar = `${x} ${y}`; // readonly function f1(mt: [number, number], rt: readonly [number, number]) { } function f2(ma: string[], ra: readonly string[], mt: [string, string], rt: readonly [string, string]) { } type ReadWrite<T> = { -readonly [P in keyof T] : T[P] }; // const assertion let obj = { x: 10, y: [20, 30], z: { a: { b: 42 } } } as const; let r2 = { x: 20, y: 10 } as const; let r2 = {...p} as const; let p1 = { x: 10, y: 20 as const }; let p2 = { 10 as const, 'foo' as const }; // Definite assignment operator class Cl { one?: string; two!: string; } let x! = 1; // Function with multiple arguments const children = [].map<Set<Map<number, string>>>(element => { if (!this.identityProvider) { return element; } return element; }); // Numerics var a = 0xA; var b = 0b1; var c = 0o7; var d = 1.1E+3; var e = 1.E+3; var f = .1E+3; var g = 1E+3; var h = 1.1; var i = 1.; var j = .1; var k = 1; var l = 1__.e+3_22 | .2____e2 | 0o1_23 | 11__. ; // Bigint const binBig = 0b101n; const octBig = 0o567n; const hexBig = 0xC0Bn; const decBig = 123n; // Types let a: null = null; let b: number = 123; let c: number = 123.456; let d: string = `Geeks`; let e: undefined = undefined; let f: boolean = true; let g: number = 0b111001; // Binary let h: number = 0o436; // Octal let i: number = 0xadf0d; // Hexa-Decimal const query = query<[number], number>(` SELECT * FROM statistics WHERE unit_id = $1`) function runQuery() { const query = createQuery<[number[]], Table<Columns>>(` some SQL here `) return database.execute(query) } aa: <sdf/> string ?<ssd/> string string // Don't highlight aa: string assa | string string ; string aa: { string string } // Don't highlight aa: [ string string ] aa: ( string string ) // Don't highlight aa: string <string> interface a { aa: /* comment */ string, bb: /* comment */ number, cc: // comment void, dd: any, } null, <{[key]: () => any}> null null, <{[key]: () =>{a: number}}> null // Correctly highlighting regular expressions dt = ((dt[0] * 1e9 + dt[1]) / 1e6).toFixed(3).replace(/\.?0+$/, '') + 'ms'; (a[0] / 2) / (2) // Type guards function isNumber(x: any): x is number { return typeof x === "number"; }