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115 lines
4.0 KiB
115 lines
4.0 KiB
2 years ago
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<p align="center"><img src="https://cdn.rawgit.com/jstransformers/jstransformer/2bb6dc6c410e8683a17a4af5f1b73bcbee95aada/logo.svg" width="300px" height="299px" /></p>
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<h1 align="center">JSTransformer</h1>
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<p align="center">Normalize the API of any jstransformer</p>
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<p align="center"><a href="https://travis-ci.org/jstransformers/jstransformer"><img src="https://img.shields.io/travis/jstransformers/jstransformer/master.svg" alt="Build Status"></a>
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<a href="https://david-dm.org/jstransformers/jstransformer"><img src="https://img.shields.io/david/jstransformers/jstransformer.svg" alt="Dependency Status"></a>
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<a href="https://david-dm.org/jstransformers/jstransformer#info=devDependencies"><img src="https://img.shields.io/david/dev/jstransformers/jstransformer.svg" alt="Developers' Dependency Status"></a>
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<a href="https://coveralls.io/r/jstransformers/jstransformer?branch=master"><img src="https://img.shields.io/coveralls/jstransformers/jstransformer/master.svg" alt="Coverage Status"></a>
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<a href="https://www.npmjs.org/package/jstransformer"><img src="https://img.shields.io/npm/v/jstransformer.svg" alt="NPM version"></a></p>
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## Installation
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npm install jstransformer
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## Usage
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```js
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var transformer = require('jstransformer');
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var marked = transformer(require('jstransformer-marked'));
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var options = {};
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var res = marked.render('Some **markdown**', options);
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// => {body: 'Some <strong>markdown</strong>', dependencies: []}
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```
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This gives the same API regardless of the jstransformer passed in.
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## API
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A transformer, once normalised using this module, will implement the following methods. Note that if the underlying transformer cannot be used to implement the functionality, it may ultimately just throw an error.
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### Returned object from `.render*`
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```js
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{body: String, dependencies: Array.<String>}
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```
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- `body` represents the result as a string
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- `dependencies` is an array of files that were read in as part of the render process (or an empty array if there were no dependencies)
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### `.render`
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```js
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transformer.render(str, options, locals);
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=> {body: String, dependencies: Array.<String>}
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```
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_requires the underlying transform to implement `.render` or `.compile`_
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Transform a string and return an object.
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### `.renderAsync`
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```js
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transformer.renderAsync(str[, options], locals, callback);
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```
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```js
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transformer.renderAsync(str[, options], locals);
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=> Promise({body: String, dependencies: Array.<String>})
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```
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_requires the underlying transform to implement `.renderAsync` or `.render`_
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Transform a string asynchronously. If a callback is provided, it is called as `callback(err, data)`, otherwise a Promise is returned.
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### `.renderFile`
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```js
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transformer.renderFile(filename, options, locals)
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=> {body: String, dependencies: Array.<String>}
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```
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_requires the underlying transform to implement `.renderFile`, `.render`, `.compileFile`, or `.compile`_
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Transform a file and return an object.
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### `.renderFileAsync`
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```js
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transformer.renderFileAsync(filename[, options], locals, callback);
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```
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```js
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transformer.renderFileAsync(filename[, options], locals);
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=> Promise({body: String, dependencies: Array.<String>})
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```
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_requires the underlying transform to implement `.renderFileAsync`, `.renderFile`, `.renderAsync`, `.render`, `.compileFileAsync`, `.compileFile`, `.compileAsync`, or `.compileFile`_
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Transform a file asynchronously. If a callback is provided, it is called as `callback(err, data)`, otherwise a Promise is returned.
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### `.inputFormats`
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```js
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var formats = transformer.inputFormats;
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=> ['md', 'markdown']
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```
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Returns an array of strings representing potential input formats for the transform. If not provided directly by the transform, results in an array containing the name of the transform.
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### `.outputFormat`
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```js
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var md = require('jstransformer')(require('jstransformer-markdown'))
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var outputFormat = md.outputFormat
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=> 'html'
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```
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Returns a string representing the default output format the transform would be expected to return when calling `.render()`.
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## License
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MIT
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