babel-plugin-vue-tsx-functional v0.1.2

babel-plugin-vue-tsx-functional

Inspired by babel-sugar-functional-vue, and TypeScript friendly.

Motivation

babel-sugar-functiona-vue allows us writing functional component as pure arrow function like below.

const MyComponent = ctx => <div>{ctx.props.text}</div>;

But this is not suitable for TypeScript. First parameter must be RenderContext<Props>, though TypeScript supposes it as Props.

This plugin does almost same thing by more TypeScript-friendly way. Wrap arrow function by marker function __VueFC__ which provides appropriate type conversion and will removed by transpilation.

const MyComponent = __VueFC__<{ text: string }>(ctx => <div>{ctx.props.text}</div>);

Prerequisite

• TypeScript >= 3.5
• Vue >= 2.6
• vue-tsx-support >= 2.3.2
• @vue/babel-preset-app (or @vue/babel-preset-jsx and babel-helper-vue-jsx-merge-props)

Installation

1. Configure basic JSX transpilation according to (vuejs/jsx)https://github.com/vuejs/jsx

2. Install from npm.

   yarn add babel-plugin-vue-tsx-functional -D

3. And add to plugins list in your .babelrc (Don't forget lib/plugin)

"plugins": ["babel-plugin-vue-tsx-functional/lib/plugin"]

Example

Input

import { __VueFC__ } from "babel-plugin-vue-tsx-functional";

const MyComponent = __VueFC__<{ foo: string }>(ctx => {
  return <div>{ctx.props.foo}</div>;
})

Intermidiate output (transpiled by tsc --module es6 --jsx preserve)

import { __VueFC__ } from "babel-plugin-vue-tsx-functional";

const MyComponent = __VueFC__(ctx => {
  return <div class="test">{ctx.props.foo}</div>;
})

Intermidiate output (transpiled by this plugin)

import { __VueFC__ } from "babel-plugin-vue-tsx-functional";

const MyComponent = {
  functional: true,
  render(h, ctx) {
    return <div class="test">{ctx.props.foo}</div>;
  }
};

Output (transpiled by @vue/preset-jsx)

import { __VueFC__ } from "babel-plugin-vue-tsx-functional";

const MyComponent = {
  functional: true,
  render(h, ctx) {
    return h(
      "div", {
        class: "test"
      },
      [ctx.props.foo]
    );
  }
};

Options

funcName (string)

Specify marker function name. (default: __VueFC__)