The unknown Type in TypeScript
TypeScript 3.0 introduced a new unknown type which is the type-safe counterpart of the any type.
Latest Posts
Importing JSON Modules in TypeScript
TypeScript 2.9 introduced a new --resolveJsonModule compiler option that lets us import JSON modules from within TypeScript modules.
Passing Generics to JSX Elements in TypeScript
TypeScript 2.9 added the ability to specify type arguments for generic JSX elements.
Mapped Type Modifiers in TypeScript
With TypeScript 2.8, mapped types have gained the ability to add or remove a particular modifier from a property. Previously, it was only possible to add modifiers to properties, but not remove them.
Conditional Types in TypeScript
TypeScript 2.8 introduced conditional types, a powerful and exciting addition to the type system.
JavaScript Promises in Depth
I'm proud to present "JavaScript Promises in Depth", my fourth egghead.io course!
Using Promise.prototype.finally() in TypeScript
ES2018 introduced a new Promise.prototype.finally() method to the standard library. Here's how to use it in TypeScript.
Syntax Highlighting for yarn.lock Files in Visual Studio Code
I recently built and published an extension for Visual Studio Code that provides syntax highlighting for yarn.lock files.
Per-File JSX Factories in TypeScript
TypeScript 2.8 allows you to specify JSX factory names on a per-file basis using a special comment at the beginning of the file.
Strict Property Initialization in TypeScript
TypeScript 2.7 introduced a new compiler option for strict property initialization checks in classes.
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