Yes other than Closure, parameter lists allow anything between ( ) In TS, parameter names are required and types can be omitted (defaults to any). In Flow, they are optional.
Airtable’s codebase follows an ethos of continual evolution. We’re unafraid of ripping out old code when it no longer meets our needs or introducing new technologies and patterns to reflect the current state of the art. Today, we’re going to provide an overview of some of the step-change moments in the history of our codebase, and dive deep into the largest of these changes: our migration to TypeS
On Sunday March 6, we migrated Stripe’s largest JavaScript codebase (powering the Stripe Dashboard) from Flow to TypeScript. In a single pull request, we converted more than 3.7 million lines of code. The next day, hundreds of engineers came in to start writing TypeScript for their projects. Seriously unreal. I remember a short time ago laughing at the idea of typescript ever landing at Stripe, an
How opaque types in Flow and TypeScript can make your code better, faster, more secure and easier to refactor. @author Charles Pick @date December 06, 2017 What’s an opaque type? In Flow and TypeScript, types are transparent by default - if two types are structurally identical they are deemed to be compatible. For example, the following types are compatible: Username and Password are both strings,
Adapted from “Phantom type” Haskell Wiki A phantom type is a parametrised type whose parameters do not all appear on the right-hand side of its definition, e.g class Data<M> { value: string; constructor(value: string) { this.value = value } }Here Data is a phantom type, because the M parameter doesn’t appear in its implementation. Why? An example: validating user inputSay you have a use(input: str
Hello! (And sorry for the radio silence.)A lot of our open-source users are rightfully observing that the Flow team has effectively stopped paying attention to an ever-growing list of issues and PRs on GitHub. And while there has been a lot of activity in terms of GitHub commits during this time, there has been little to no communication about our roadmap. We understand that this state of affairs
We recently ported MemSQL Studio's 30 thousand lines of JavaScript from using Flow to TypeScript. In this article, I describe why we ported our codebase, how it took place and how it has been working out for us. Disclaimer: my goal with this blog post is not to condemn Flow or usage of Flow. I highly admire the project, and I think that there is enough space in the JavaScript community for both ty
What happened that made TypeScript viable for me and worth migrating paypal-scripts for. Note: There was a lot of misunderstanding about this post so I want to make it clear that most of PayPal still uses JavaScript and this post is just to announce that PayPal engineers can now very easily choose between TypeScript and JavaScript for their projects without fiddling around with tooling. NOTE: This
the morning paper a random walk through Computer Science research, by Adrian Colyer Made delightfully fast by strattic Fast and precise type checking for JavaScript Chaudhuri et al., OOPSLA’17 In this paper we present the design and implementation of Flow, a fast and precise type checker for JavaScript that is used by thousands of developers on millions of lines of code at Facebook every day. In a
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