ast-transform

WebJar for ast-transform

License	MIT
Categories	ORM Data
GroupId	org.webjars.npm
ArtifactId	ast-transform
Last Version	0.0.0
Release Date	Jun 22, 2020
Type	jar
Description	ast-transform WebJar for ast-transform
Project URL	https://www.webjars.org
Source Code Management	https://github.com/hughsk/ast-transform

Download ast-transform

Filename	Size
ast-transform-0.0.0.pom
ast-transform-0.0.0.jar	4 KB
ast-transform-0.0.0-sources.jar	22 bytes
ast-transform-0.0.0-javadoc.jar	22 bytes

How to add to project

Apache Maven

<!-- https://jarcasting.com/artifacts/org.webjars.npm/ast-transform/ -->
<dependency>
    <groupId>org.webjars.npm</groupId>
    <artifactId>ast-transform</artifactId>
    <version>0.0.0</version>
</dependency>

Gradle Groovy

// https://jarcasting.com/artifacts/org.webjars.npm/ast-transform/
implementation 'org.webjars.npm:ast-transform:0.0.0'

Gradle Kotlin

// https://jarcasting.com/artifacts/org.webjars.npm/ast-transform/
implementation ("org.webjars.npm:ast-transform:0.0.0")

Apache Buildr

'org.webjars.npm:ast-transform:jar:0.0.0'

Apache Ivy

<dependency org="org.webjars.npm" name="ast-transform" rev="0.0.0">
  <artifact name="ast-transform" type="jar" />
</dependency>

Groovy Grape

@Grapes(
@Grab(group='org.webjars.npm', module='ast-transform', version='0.0.0')
)

Scala SBT

libraryDependencies += "org.webjars.npm" % "ast-transform" % "0.0.0"

Leiningen

[org.webjars.npm/ast-transform "0.0.0"]

Dependencies

compile (3)

Group / Artifact	Type	Version
org.webjars.npm : through	jar	[2.3.4,2.4)
org.webjars.npm : esprima	jar	[1.0.4,1.1)
org.webjars.npm : escodegen	jar	[1.2.0,1.3)

Project Modules

There are no modules declared in this project.

ast-transform

Convenience wrapper for performing AST transformations with browserify transform streams. Note that it doesn't handle source maps nicely, though pull requests are welcome!

Usage

ast(transform[, opts])

Where transform is a function that takes a filename and returns a function, e.g.:

var replace = require('replace-method')
var ast = require('ast-transform')
var path = require('path')

module.exports = ast(function (file) {
  if (path.extname(file) !== '.js') return

  return function(ast, done) {
    // replace require calls with
    // strings for some reason
    replace(ast)(['require'], function(node) {
      return { type: 'Literal', value: 'replaced!' }
    })

    done()
  }
})

Note that you can return a falsey value instead of a function to bail the stream early and avoid the parse/deparse overhead. Here's an example of using the above with browserify:

var browserify = require('browserify')
var example = require('./example')
var fs = require('fs')

browserify('./index.js')
  .transform(example)
  .bundle()
  .pipe(fs.createWriteStream(__filename + '/bundle.js'))

License

MIT. See LICENSE.md for details.

Versions

Version
0.0.0 Jun 22, 2020