Peggy loader for Vite


Install

code based on peggy-loader for webpack.

npm install vite-plugin-peggy-loader

The pegjs-loader requires peggy
as peerDependency. Thus you are able to specify the required version accurately.

Usage

Apply the loader by adjusting your vite.config so .pegjs is automatically transformed to .js

`` js
import peggyLoader from "vite-plugin-peggy-loader";

export default defineConfig({
plugins: [peggyLoader()]
});
`

Then to use the compiled version import it like:

`js
import * as grammer from './grammer.pegjs'
`

$3

You can pass options to PEG.js in the config, below is the supported options:

* allowedStartRules - The rules the built parser will be allowed to start
parsing from (default: the first rule in the grammar).

* cache — If true, makes the parser cache results, avoiding exponential
parsing time in pathological cases but making the parser slower (default:
false).

* dependencies - Parser dependencies, the value is an object which maps variables used to access the
dependencies in the parser to module IDs used to load them (default: {}).

* optimize - Whether to optimize the built parser either for speed or
size (default: speed).

* trace - If true, the tracing support in the built parser is enabled
(default: false).

` js
import peggyLoader from "peggy-loader";

export default defineConfig({
plugins: [
peggyLoader({
cache: false,
optimizeParser: 'speed',
trace: false,
dependencies: {},
allowedStartRules: []
})
]
});
`

Change Log

This project adheres to Semantic Versioning.

Thanks

* Victor Homyakov for the propagation of the cache option.
* VladimirTechMan for the propagation of the optimize option and updating things to be compatible with PEG.js 0.10.0.
* ragtime for the propagation of the allowedStartRules and trace options.
* Jan Varwig for the Webpack 2 compatibility fix.
* retorquere for the propagation of the dependencies` option.

License

MIT (http://www.opensource.org/licenses/mit-license.php)