Proposal: Get the type of any expression with typeof · Issue #6606 · microsoft/TypeScript
Working Implementation for this Proposal Try it out: npm install yortus-typescript-typeof View the diff: here. Problem Scenario TypeScript's type inference covers most cases very well. However there remain some situations where there is no obvious way to reference an anonymous type, even though the compiler is able to infer it. Some examples: I have a strongly-typed collection but the element type
Proposal: Variadic Kinds -- Give specific types to variadic functions · Issue #5453 · microsoft/TypeScript
Variadic Kinds Give Specific Types to Variadic Functions This proposal lets Typescript give types to higher-order functions that take a variable number of parameters. Functions like this include concat, apply, curry, compose and almost any decorator that wraps a function. In Javascript, these higher-order functions are expected to accept variadic functionsas arguments. With the ES2015 and ES2017 s
API Breaking Changes
TypeScript is now itself implemented using modules (though, the package still contains bundled outputs). The exported API is no longer defined as a "configurable" object, so operations which attempt to modify the package at runtime such as const ts = require("ts"); ts.readJson = ... will throw. The output files have changed significantly; if you are patching TypeScript, you will definitely need to
Consider allowing access to UMD globals from modules · Issue #10178 · microsoft/TypeScript
Feedback from #7125 is that some people actually do mix and match global and imported UMD libraries, which we didn't consider to be a likely scenario when implementing the feature. Three plausible options: Do what we do today - bad because there's no good workaround Allow some syntax or configuration to say "this UMD global is actually available globally" - somewhat complex, but doable Allow acces
Release 0.18.0 · avajs/ava
This release is one of the biggest, most feature-packed release we’ve had in a long time. We have prepared lots of tasty things for you - snapshot testing, magic assert, precompiling test helpers, improvements to Babel transpilation, and more. Our team and contributors have been working hard to deliver all this goodness. We can’t wait to hear your feedback and don’t hesitate to suggest new ideas a
TypeScript and <script type="module"></script> · Issue #13422 · microsoft/TypeScript
A first implementation of <script type="module"><script> just landed in Safari Technology Preview 21, so I tried to use it on a TypeScript / Angular project, to finally get rid of system.js. First issue, resolved but unconvenient : ES6 modules paths must include the '.js' extension. Fortunately, TS 2.0+ knows how to resolve import { Something } from './test.js' into import { Something } from './te
Mixin classes by ahejlsberg · Pull Request #13743 · microsoft/TypeScript
This PR expands upon #13604 to add support for mixin classes and constructors. The PR includes type system support for the ECMAScript 2015 mixin class pattern described here and here as well as rules for combining mixin construct signatures with regular construct signatures in intersection types. In the following, the term mixin constructor type refers to a type that has a single construct signatu
TypeScript extensibility · Issue #6508 · microsoft/TypeScript
TypeScript Extensibility This is an umbrella issue for tracking the design of an extensibility model for TypeScript. There have already been a number of issues opened with regards to supporting Angular2 via such a model, (especially for richer template editing support), so this will be the initial focus. This not only ensures rich support for a key TypeScript scenario, but by solving real problems
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Check non-undefined properties are initialized in the constructor with `--strictNullChecks` · Issue #8476 · microsoft/TypeScript
GitHub - andrei-markeev/ts2c: Convert Javascript/TypeScript to C
New --strict master option by ahejlsberg · Pull Request #14486 · microsoft/TypeScript
Emit `__esModule` for every ES6 module emitted. · Issue #13709 · microsoft/TypeScript
GitHub - niieani/typescript-vs-flowtype: Differences between Flowtype and TypeScript -- syntax and usability
GitHub - protobufjs/protobuf.js: Protocol Buffers for JavaScript & TypeScript.
Asynchronous Iterations · Issue #11326 · microsoft/TypeScript
Breaking Changes
Return value of super() calls not used for `this` · Issue #7574 · microsoft/TypeScript
Allow deriving from object and intersection types by ahejlsberg · Pull Request #13604 · microsoft/TypeScript
Improved checking of nullable operands in expressions by ahejlsberg · Pull Request #13483 · microsoft/TypeScript
TypeScript/src/compiler/core.ts at main · microsoft/TypeScript
