babel-plugin-merge-imports

Plugin for Babel for transforming nested imports

Example

.babelrc

{
  "plugins": [
    ["./src", {
      "pkg": "openlayers",
      "pkgVar": "__ol",
      "regex": "^ol(?:\/(.*))?$",
    }]
  ]
}

Before

// Variables should contain original name from OpenLayers package
import Map from 'ol/map'
import tilegrid from 'ol/tilegrid'
import VectorLayer from 'ol/layer/vector'
import VectorSource from 'ol/source/vector'

const q = tilegrid
const qq = Map.prototype.getView
const qqq = VectorLayer
const qqqq = tilegrid.createXYZ()
const qqqqq = new VectorSource()

const map = new Map({
  layers: [
    new VectorLayer({
      source: new VectorSource()
    })
  ]
})

After

var _ol_ = require('openlayers');

const q = _ol_.tilegrid;
const qq = _ol_.Map.prototype.getView;
const qqq = _ol_.layer.Vector;
const qqqq = _ol_.tilegrid.createXYZ();
const qqqqq = new _ol_.source.Vector();

const map = new _ol_.Map({
  layers: [new _ol_.layer.Vector({
    source: new _ol_.source.Vector()
  })]
});