Super-fast renderer for esast. Output is not very pretty. For beauty use escodegen instead. (escodegen will work on esast trees because they mimic untyped trees.)

Install

npm install --save esast/esast-render-fast
# or:
bower install --save esast/esast-render-fast

Use

import {BinaryExpression, LiteralNumber} from 'esast/lib/Expression'
import render, {renderWithSourceMap} from 'esast-render-fast/lib/render'

const four = new BinaryExpression('+', new LiteralNumber(2), new LiteralNumber(2))

const rendered = render(four, {ugly: false})

// four.left.loc = ...; four.right.loc = ...; four.loc = ...
const {code, sourceMap} = renderWithSourcemap(four, 'input-file.xyz', 'output-file.js', {ugly: false})

Time

Here are estimates of rendering time when run on a sample tree (the escodegen source code).

Name	Render time	Render time with source maps
esast-render-fast	8ms	32ms
escodegen	7ms	120ms
esotope	2.5ms	not supported

Converting from an untyped tree takes about 6ms, so using esast-render-fast won't help your render times if you're not directly construction esast trees. (And if not, why not?)