History

Sam Goldman a38a58bad8 Add support for Flow def-site variance syntax

This syntax allows you to specify whether a type variable can appear in
a covariant or contravariant position, and is super useful for, say,
Promise.

Right now this is hacked in jankily, but in the next major release we
should stop using Identifier nodes for type parameters.

2016-03-06 14:44:09 -08:00

src

Add support for Flow def-site variance syntax

2016-03-06 14:44:09 -08:00

test

Add support for Flow def-site variance syntax

2016-03-06 14:44:09 -08:00

.npmignore

add missing npmignore files to packages

2015-08-12 02:57:46 +01:00

package.json

v6.6.5

2016-03-04 18:16:17 -05:00

README.md

Document options for babel-generator

2016-01-08 14:38:37 +00:00

README.md

babel-generator

Turns an AST into code.

Install

$ npm install babel-generator

Usage

import {parse} from 'babylon';
import generate from 'babel-generator';

const code = 'class Example {}';
const ast = parse(code);

const output = generate(ast, { /* options */ }, code);

Options

Options for formatting output:

name	type	default	description
auxiliaryCommentBefore	string		Optional string to add as a block comment at the start of the output file
auxiliaryCommentAfter	string		Optional string to add as a block comment at the end of the output file
shouldPrintComment	function	`opts.comments`	Function that takes a comment (as a string) and returns `true` if the comment should be included in the output. By default, comments are included if `opts.comments` is `true` or if `opts.minifed` is `false` and the comment contains `@preserve` or `@license`
retainLines	boolean	`false`	Attempt to use the same line numbers in the output code as in the source code (helps preserve stack traces)
comments	boolean	`true`	Should comments be included in output
compact	boolean or `'auto'`	`opts.minified`	Set to `true` to avoid adding whitespace for formatting
minified	boolean	`false`	Should the output be minified
concise	boolean	`false`	Set to `true` to reduce whitespace (but not as much as `opts.compact`)
quotes	`'single'` or `'double'`	autodetect based on `ast.tokens`	The type of quote to use in the output
filename	string		Used in warning messages

Options for source maps:

name	type	default	description
sourceMaps	boolean	`false`	Enable generating source maps
sourceMapTarget	string		The filename of the generated code that the source map will be associated with
sourceRoot	string		A root for all relative URLs in the source map
sourceFileName	string		The filename for the source code (i.e. the code in the `code` argument)