Pure Ts Tour Jun 2026

Run:

// Partial: make all properties optional function updateTodo(todo: Todo, fields: Partial<Todo>): Todo return ...todo, ...fields ;

Create src/features/1-basic-types.ts :

import "./features/1-basic-types"; import "./features/2-arrays-tuples-enums"; import "./features/3-functions"; import "./features/4-interfaces"; import "./features/5-union-intersection"; import "./features/6-generics"; import "./features/7-type-narrowing"; import "./features/8-utility-types";

interface Dog bark(): void;

console.log(identity("hello")); console.log(getLength([1, 2, 3]));

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// Typed parameters and return value function greet(name: string, greeting?: string): string return `$greeting ?? "Hello", $name`;

// Union type type Result = "success" | "error" | "loading"; let state: Result = "loading"; Run: // Partial: make all properties optional function