TypeScript Deep Dive
  • README
  • Getting Started
    • Why TypeScript
  • JavaScript
    • Equality
    • References
    • Null vs. Undefined
    • this
    • Closure
    • Number
    • Truthy
  • Future JavaScript Now
    • Classes
      • Classes Emit
    • Arrow Functions
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    • let
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    • Destructuring
    • Spread Operator
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  • Project
    • Compilation Context
      • tsconfig.json
      • Which Files?
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      • File Module Details
      • global.d.ts
    • Namespaces
    • Dynamic Import Expressions
  • Node.js QuickStart
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  • TypeScript's Type System
    • JS Migration Guide
    • @types
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    • lib.d.ts
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  • JSX
    • React
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  • Options
    • noImplicitAny
    • strictNullChecks
  • Errors in TypeScript
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    • Common Errors
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  • TIPs
    • String Based Enums
    • Nominal Typing
    • Stateful Functions
    • Currying
    • Type Instantiation
    • Lazy Object Literal Initialization
    • Classes are Useful
    • Avoid Export Default
    • Limit Property Setters
    • outFile caution
    • JQuery tips
    • static constructors
    • singleton pattern
    • Function parameters
    • Build Toggles
    • Barrel
    • Create Arrays
    • Typesafe Event Emitter
  • StyleGuide
  • TypeScript Compiler Internals
    • Program
    • AST
      • TIP: Visit Children
      • TIP: SyntaxKind enum
      • Trivia
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      • Parser Functions
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    • Emitter
      • Emitter Functions
      • Emitter SourceMaps
    • Contributing
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Future JavaScript Now

One of the main selling points of TypeScript is that it allows you to use a bunch of features from ES6 and beyond in current (ES3 and ES5 level) JavaScript engines (like current browsers and Node.js). Here we deep dive into why these features are useful followed by how these features are implemented in TypeScript.

Note: Not all of these features are slated for immediate addition to JavaScript but provide great utility to your code organization and maintenance. Also note that you are free to ignore any of the constructs that don't make sense for your project, although you will end up using most of them eventually ;)

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Last updated 5 years ago