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Automatic type acquisition -- concerns Some background: given a type reference, i.e. in tsconfig.json "types" : ["jquery"], or /// <reference types="jquery" />, here are the lookup locations to resolve"jquery"` reference: location specified by --typesRoot if defined node_modules node_module@types automatic type definition inclusion in compilations, include all "types" packages automatically value
In TypeScript 2.0, we want to make acquiring declaration files easier. We'd like to consolidate .d.ts management with general dependency management through npm. Background TypeScript uses declaration files (files ending in .d.ts, also called "definition" files) to describe the shape and functionality of other libraries. Usually, new declaration files are submitted to DefinitelyTyped, a community-d
Currently, TS can't find modules when you use a file extension in the import name (import {Foo} from './foo.ts';) - SystemJS updated and file extensions are now required (though the spec issue is still under discussion) on imports (without setting some legacy settings in System.config). So when compiling with --module, you can either have a functioning typechecker (no extensions on your imports) o
This PR introduces a never type that represents the type of values that never occur. Specifically, never is the return type for functions that never return and never is the type of variables under type guards that are never true. The never type has the following characteristics: never is a subtype of and assignable to every type. No type is a subtype of or assignable to never (except never itself)
This quick start guide will teach you how to wire up TypeScript with React and webpack . We assume that you're already using Node.js with npm . Lay out the project Let's start out with a new directory. We'll name it proj for now, but you can change it to whatever you want. To start, we're going to structure our project in the following way: proj/ +- src/ | +- components/ | +- dist/ TypeScript file
Proposal: support non-structural typing (e.g. new user-defined base-types, or some form of basic nominal typing). This allows programmer to have more refined types supporting frequently used idioms such as: Indexes that come from different tables. Because all indexes are strings (or numbers), it's easy to use the an index variable (intended for one table) with another index variable intended for a
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