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11 KiB
JavaScript
1 line
11 KiB
JavaScript
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(window["webpackJsonp"]=window["webpackJsonp"]||[]).push([["chunk-2d0e6c67"],{"99d5":function(e,t,a){"use strict";a.r(t);var i="Plans for the Next Iteration of Vue.js",n='<p>Last week at<a href="https://vuejs.london/summary" rel="nofollow">Vue.js London</a>I gave a brief sneak peek of what’s coming in the next major version of Vue. This post provides an in-depth overview of the plan.</p>\n<p><img class=" wscnph" src="https://wpimg.wallstcn.com/b8a1d7be-0b73-41b8-be8c-7c01c93cab66.png" data-wscntype="image" data-wscnh="742" data-wscnw="692" /></p>\n<h3>Why a new majorversion?</h3>\n<p>Vue 2.0 was released<a href="https://medium.com/the-vue-point/vue-2-0-is-here-ef1f26acf4b8" rel="nofollow">exactly two years ago</a>(how time flies!). During this period, the core has remained backwards compatible with five minor releases. We’ve accumulated a number of ideas that would bring improvements, but they were held off because they would result in breaking changes. At the same time, the JavaScript ecosystem and the language itself has been evolving rapidly. There are greatly improved tools that could enhance our workflow, and many new language features that could unlock simpler, more complete, and more efficient solutions to the problems Vue is trying to solve. What’s more exciting is that we are seeing ES2015 support becoming a baseline for all major evergreen browsers. Vue 3.0 aims to leverage these new language features to make Vue core smaller, faster, and more powerful.</p>\n<p>Vue 3.0 is currently in prototyping phase, and we have already implemented a runtime close to feature-parity with 2.x.<strong>Many of the items listed below are either already implemented, or confirmed to be feasible. Ones that are not yet implemented or still in exploration phase are marked with a *.</strong></p>\n<h3>The Details</h3>\n<h4>High-Level APIChanges</h4>\n<blockquote>TL;DR: Everything except render function API and scoped-slots syntax will either remain the same or can be made 2.x compatible via a compatibility build.</blockquote>\n<p>Since it’s a new major, there is going to be some breaking changes. However, we take backwards compatibility seriously, so we want to start communicating these changes as soon as possible. Here’s the currently planned public API changes:</p>\n<ul><li>Template syntax will remain 99% the same. There may be small tweaks in scoped slots syntax, but other than that we have no plans to change anything else for templates.</li><li>3.0 will support class-based components natively, with the aim to provide an API that is pleasant to use in native ES2015 without requiring any transpilation or stage-x features. Most current options will have a reasonable mapping in the class-based API. Stage-x features such as class fields and decorators can still be used optionally to enhance the authoring experience. In addition, the API is designed with TypeScript type inference in mind. The 3.x codebase will itself be written in TypeScript, and providing improved TypeScript support. (That said, usage of TypeScript in an application is still entirely optional.)</li><li>The 2.x object-based component format will still be supported by internally transforming the object to a corresponding class.</li><li>Mixins will still be supported.*</li><li>Top level APIs will likely receive an overhaul to avoid globally mutating the Vue runtime when installing plugins. Instead, plugins will be applied and scoped to a component tree. This will make it easier to test components that rely on specific plugins, and also make it possible to mount multiple Vue applications on the same page with different plugins, but using the same Vue runtime.*</li><li>Functional components can finally be plain functions —however, async components will now need to be explicitly created via a helper function.</li><li>The part that will receive the most changes is the Virtual DOM format used in render functions. We are currently collecting feedback from major library authors and will be sharing more details as we are more confident of the changes, but as long as yo
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