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79 lines
1.7 KiB
79 lines
1.7 KiB
## @vue/babel-sugar-composition-api-render-instance
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> Ported from [luwanquan/babel-preset-vca-jsx](https://github.com/luwanquan/babel-preset-vca-jsx) by [@luwanquan](https://github.com/luwanquan)
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Babel syntactic sugar for replacing `this` with `getCurrentInstance()` in Vue JSX with @vue/composition-api
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### Babel Compatibility Notes
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- This repo is only compatible with Babel 7.x
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### Usage
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Install the dependencies:
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```sh
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# for yarn:
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yarn add @vue/babel-sugar-composition-api-render-instance
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# for npm:
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npm install @vue/babel-sugar-composition-api-render-instance --save
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```
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In your `.babelrc`:
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```json
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{
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"plugins": ["@vue/babel-sugar-composition-api-render-instance"]
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}
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```
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However it is recommended to use the [configurable preset](../babel-preset-jsx/README.md) instead.
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### Details
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This plugin automatically replaces `this` in `setup()` with `getCurrentInstance()`. This is required for JSX to work in @vue/composition-api as `this` is not available in `setup()`
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Input:
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```jsx
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defineComponent({
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setup() {
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return () => <MyComponent vModel={a.b} />
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}
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})
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```
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Output (without @vue/babel-sugar-composition-api-render-instance):
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```jsx
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defineComponent({
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setup() {
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return () => <MyComponent model={{
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value: a.b,
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callback: $$v => {
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this.$set(a, "b", $$v);
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}
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}} />
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}
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})
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```
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Output (with @vue/babel-sugar-composition-api-render-instance):
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```jsx
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import { getCurrentInstance } from "@vue/composition-api";
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defineComponent({
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setup() {
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const __currentInstance = getCurrentInstance();
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return () => <MyComponent model={{
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value: a.b,
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callback: $$v => {
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__currentInstance.$set(a, "b", $$v);
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}
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}} />
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}
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})
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```
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