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FreeLearn TypeScript – Full Tutorial
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The full tutorial moves from installing TypeScript into the type system itself: primitive types, type inference, functions, objects, type aliases, readonly and optional properties, arrays, union types, tuples, enums and interfaces. The second half turns to classes, access modifiers, abstract classes, generics and then type narrowing, with a closing section on exhaustiveness checking.
Several sections address habits that cause trouble in plain JavaScript projects, such as the warning against using any and the comparison of interfaces with type aliases. Working through the sequence means the later generics and narrowing lessons build on vocabulary established early on.
The description links a GitHub repository for the code shown, so keep an editor open alongside the video. Beginners who have never run a TypeScript project may want to pause at the setup section until their local tooling works.
Learn how to program with TypeScript in this full course for beginners. TypeScript is a typed superset of JavaScript that compiles to plain JavaScript. TypeScript provides better error checking than JavaScript. This is because TypeScript uses a static type system, which means that the type of a variable is checked before the code is executed.
💻 GitHub Repo: https://github.com/hiteshchoudhary/typescript-youtube-22
✏️ Hitesh Choudhary created this course. Check out his channel: https://www.youtube.com/c/HiteshChoudharydotcom
❤️ Try interactive TypeScript courses we love, right in your browser: https://scrimba.com/freeCodeCamp-TypeScript (Made possible by a grant from our friends at Scrimba)
⭐️ Contents ⭐️
⌨️ (0:00:00) Why to learn TypeScript
⌨️ (0:07:08) TypeScript is not what you think
⌨️ (0:15:25) How to install TypeScript
⌨️ (0:27:33) Your first intro to TypeScript docs
⌨️ (0:39:21) Number, boolean, and type inference
⌨️ (0:39:21) Number, boolean, and type inference
⌨️ (0:46:52) Don't use ANY
⌨️ (0:51:30) Do you really know functions
⌨️ (1:02:55) A better way to write function
⌨️ (1:15:38) Bad behavior of objects
⌨️ (1:25:14) Type Aliases
⌨️ (1:32:28) READONLY and optional
⌨️ (1:42:13) Array
⌨️ (1:50:03) Union Types in TS
⌨️ (2:04:46) Tuples
⌨️ (2:14:33) Enums
⌨️ (2:24:03) interface
⌨️ (2:33:52) Interface vs Type
⌨️ (2:39:08) How to setup Typescript for real projects
⌨️ (2:53:44) Classes
⌨️ (3:02:06) Private Public
⌨️ (3:08:12) Getters and Setters
⌨️ (3:15:25) Protected
⌨️ (3:19:34) Why Interface is important
⌨️ (3:26:05) Abstract class
⌨️ (3:35:36) Generics
⌨️ (3:47:58) Generics in Array and Arrow functions
⌨️ (3:56:07) Generic Classes
⌨️ (4:07:16) Type Narrowing
⌨️ (4:17:04) The in operator narrowing
⌨️ (4:22:17) Instanceof and Type Predicates
⌨️ (4:31:35) Discriminated Union and Exhaustiveness Checking with never
⌨️ (4:42:54) TypeScript End
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