Posted on Jul 14 • Originally published at Lakshmananarumugam.com 1.Optional Chaining (?.):Optional chaining allows you to safely access nested properties or methods without worrying about null or undefined values. It short-circuits the evaluation if any intermediate property is null or undefined.2.Nullish Coalescing Operator (??):The nullish coalescing operator provides a default value when a variable is null or undefined.3.Type Assertion:Type assertion allows you to explicitly define the type of a variable when TypeScript is unable to infer it.4.Generics:Generics enable you to create reusable components that can work with a variety of types.5.keyof Operator:The keyof operator returns a union of all known property names of a given type.6.Type Guards:Type guards allow you to narrow down the type of a variable within a conditional block, based on a certain condition.7.Intersection Types:Intersection types allow you to combine multiple types into a single type, creating a new type that has all the properties and methods of the intersected types.8.Mapped Types:Mapped types allow you to create new types by transforming the properties of an existing type.9.String Literal Types and Union Types:TypeScript supports string literal types and union types, which can be used to define specific sets of values for a variable.10.Decorators:Decorators allow you to modify or extend the behavior of classes, methods, properties, and other declarations.11.Index Signatures:Index signatures allow you to define dynamic property names and their corresponding types in an interface or type.12.Type Inference with Conditional Statements:TypeScript can infer the types based on conditional statements, allowing for more concise code.13.Readonly Properties:TypeScript provides the readonly modifier to define properties that can't be modified after initialization.14.Type Aliases:Type aliases allow you to create custom names for existing types, providing more semantic meaning and improving code readability.15.Type Guards with Classes:Type guards can also be used with classes to narrow down the type of an object instance.Templates let you quickly answer FAQs or store snippets for re-use. Are you sure you want to hide this comment? It will become hidden in your post, but will still be visible via the comment's permalink. Hide child comments as well Confirm For further actions, you may consider blocking this person and/or reporting abuse Arsalan Mlaik - Jul 10 Joshua Nussbaum - Jul 10 Ampla Network - Jun 22 Dedar Alam - Jun 17 Once suspended, lakshmananarumugam will not be able to comment or publish posts until their suspension is removed. Once unsuspended, lakshmananarumugam will be able to comment and publish posts again. Once unpublished, all posts by lakshmananarumugam will become hidden and only accessible to themselves. If lakshmananarumugam is not suspended, they can still re-publish their posts from their dashboard. Note: Once unpublished, this post will become invisible to the public and only accessible to Lakshmanan Arumugam. They can still re-publish the post if they are not suspended. Thanks for keeping DEV Community safe. Here is what you can do to flag lakshmananarumugam: lakshmananarumugam consistently posts content that violates DEV Community's code of conduct because it is harassing, offensive or spammy. Unflagging lakshmananarumugam will restore default visibility to their posts. DEV Community — A constructive and inclusive social network for software developers. With you every step of your journey. Built on Forem — the open source software that powers DEV and other inclusive communities.Made with love and Ruby on Rails. DEV Community © 2016 - 2023. We're a place where coders share, stay up-to-date and grow their careers.