TypeScript 2.8: Mapped Type Modifiers
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.
Latest Posts
TypeScript 2.8: Conditional Types
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.
TypeScript 2.8: Per-File JSX Factories
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.
TypeScript 2.7: Strict Property Initialization
TypeScript 2.7 introduced a new compiler option for strict property initialization checks in classes.
TypeScript 2.7: Numeric Separators
TypeScript 2.7 brought support for numeric separators. Within a numeric literal, you can now group digits by putting an underscore between them.
TypeScript 2.6: JSX Fragment Syntax
TypeScript 2.6 added support for JSX fragments. Within .tsx files, you can now use the new <>...</> syntax to create a fragment.
TypeScript 2.5: Optional catch Binding
TypeScript 2.5 implemented the optional catch binding proposal, which changes the ECMAScript grammar to allow for the omission of the variable binding within a catch clause.
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