TypeScript/tests/cases/fourslash/thisPredicateFunctionCompletions01.ts

51 lines
1.5 KiB
TypeScript

/// <reference path="fourslash.ts" />
//// class FileSystemObject {
//// isFile(): this is Item {
//// return this instanceof Item;
//// }
//// isDirectory(): this is Directory {
//// return this instanceof Directory;
//// }
//// isNetworked(): this is (Networked & this) {
//// return !!(this as Networked).host;
//// }
//// constructor(public path: string) {}
//// }
////
//// class Item extends FileSystemObject {
//// constructor(path: string, public content: string) { super(path); }
//// }
//// class Directory extends FileSystemObject {
//// children: FileSystemObject[];
//// }
//// interface Networked {
//// host: string;
//// }
////
//// const obj: FileSystemObject = new Item("/foo", "");
//// if (obj.isFile()) {
//// obj./*1*/;
//// if (obj.isNetworked()) {
//// obj./*2*/;
//// }
//// }
//// if (obj.isDirectory()) {
//// obj./*3*/;
//// if (obj.isNetworked()) {
//// obj./*4*/;
//// }
//// }
//// if (obj.isNetworked()) {
//// obj./*5*/;
//// }
const common: ReadonlyArray<string> = ["isFile", "isDirectory", "isNetworked", "path"];
verify.completions(
{ marker: "1", exact: ["content", ...common] },
{ marker: "2", exact: ["host", "content", ...common] },
{ marker: "3", exact: ["children", ...common] },
{ marker: "4", exact: ["host", "children", ...common] },
{ marker: "5", exact: ["host", ...common] },
);