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4 years ago
[![Build Status][travis-image]][travis-url]
[![Issue Count][codeclimate-image]][codeclimate-url]
[![Coverage Status][coverage-image]][coverage-url]
[![NPM version][npm-version-image]][npm-url]
[![NPM downloads][npm-downloads-image]][npm-url]
[![MIT License][license-image]][license-url]
## Important
This compiler will not work with older Riot.js versions.
It's designed to work with Riot.js > 4.0.0.
For Riot.js < 4.0.0 please check the [v3](https://github.com/riot/compiler/tree/v3) branch
## Installation
```
npm i @riotjs/compiler -D
```
## Usage
The riot compiler can compile only strings:
```js
import { compile } from '@riotjs/compiler'
const { code, map } = compile('<p>{hello}</p>')
```
You can compile your tags also using the new `registerPreprocessor` and `registerPostprocessor` APIs for example:
```js
import { compiler, registerPreprocessor, registerPostprocessor } from '@riotjs/compiler'
import pug from 'pug'
import buble from 'buble'
// process your tag template before it will be compiled
registerPreprocessor('template', 'pug', function(code, { options }) {
const { file } = options
console.log('your file path is:', file)
return {
code: pug.render(code),
// no sourcemap here
map: null
}
})
// your compiler output will pass from here
registerPostprocessor(function(code, { options }) {
const { file } = options
console.log('your file path is:', file)
// notice that buble.transform returns {code, map}
return buble.transform(code)
})
const { code, map } = compile('<p>{hello}</p>', {
// specify the template preprocessor
template: 'pug'
})
```
## API
### compile(string, options)
#### @returns `<Promise>{ code, map }` output that can be used by Riot.js
- *string*: is your tag source code
- *options*: the options should contain the `file` key identifying the source of the string to compile and
the `template` preprocessor to use as string
Note: specific preprocessors like the `css` or the `javascript` ones can be enabled simply specifying the `type` attribute
in the tag source code for example
```html
<my-tag>
<style type='scss'>
// ...
</style>
</my-tag>
```
### registerPreprocessor(type, id, preprocessorFn)
#### @returns `Object` containing all the preprocessors registered
- *type*: either one of `template` `css` or `javascript`
- *id*: unique preprocessor identifier
- *preprocessorFn*: function receiving the code as first argument and the current options as second
### registerPostprocessor(postprocessorFn)
#### @returns `Set` containing all the postprocessors registered
- *postprocessorFn*: function receiving the compiler output as first argument and the current options as second
[travis-image]: https://img.shields.io/travis/riot/compiler.svg?style=flat-square
[travis-url]: https://travis-ci.org/riot/compiler
[license-image]: https://img.shields.io/badge/license-MIT-000000.svg?style=flat-square
[license-url]: LICENSE
[npm-version-image]: https://img.shields.io/npm/v/@riotjs/compiler.svg?style=flat-square
[npm-downloads-image]: https://img.shields.io/npm/dm/@riotjs/compiler.svg?style=flat-square
[npm-url]: https://npmjs.org/package/@riotjs/compiler
[coverage-image]: https://img.shields.io/coveralls/riot/compiler/master.svg?style=flat-square
[coverage-url]: https://coveralls.io/r/riot/compiler?branch=master
[codeclimate-image]: https://api.codeclimate.com/v1/badges/37de24282e8d113bb0cc/maintainability
[codeclimate-url]: https://codeclimate.com/github/riot/compiler