Aster-traverse NPM

aster-traverse

Traverse with aster.

Usage

First, install aster-traverse as a development dependency:

npm install --save-dev aster-traverse

Then, add it to your build script:

var aster = require('aster');
var traverse = require('aster-traverse');

aster.src('src/**/*.js')
.map(traverse({
  replace: true,
  leave: function (node) {
    // Optimizing obvious calculations, concatenations, etc.
    if (node.type === 'BinaryExpression' && node.left.type === 'Literal' && node.right.type === 'Literal') {
      return {type: 'Literal', value: eval(JSON.stringify(node.left.value) + node.operator + JSON.stringify(node.right.value))};
    }
  }
}))
.map(aster.dest('dist'))
.subscribe(aster.runner);