build es6 module

Author: sgratzl

package-lock.json

@@ -13,8 +13,7 @@
     "url": "https://github.com/datavisyn/chartjs-scale-hierarchical.git"
   },
   "main": "build/Chart.Hierarchical.js",
-  "jsnext:main": "build/Chart.Hierarchical.js",
-  "module": "build/Chart.Hierarchical.js",
+  "module": "build/Chart.Hierarchical.mjs",
   "files": [
     "build",
     "src/**/*.js"
@@ -28,8 +27,6 @@
     "babel-jest": "^23.6.0",
     "eslint": "^5.10.0",
     "jest": "^23.6.0",
-    "package-preamble": "^0.1.0",
-    "regenerator-runtime": "^0.13.1",
     "release-it": "^9.2.0",
     "rimraf": "^2.6.2",
     "rollup": "^0.68.0",

package.json

@@ -3,7 +3,7 @@ import resolve from 'rollup-plugin-node-resolve';
 import commonjs from 'rollup-plugin-commonjs';
 import babel from 'rollup-plugin-babel';
 
-export default {
+export default [{
   output: {
     file: 'build/Chart.Hierarchical.js',
     name: 'ChartHierarchical',
@@ -18,4 +18,19 @@ export default {
     commonjs(),
     babel()
   ]
-};
+}, {
+  output: {
+    file: 'build/Chart.Hierarchical.mjs',
+    name: 'ChartHierarchical',
+    format: 'esm',
+    globals: {
+      'chart.js': 'Chart'
+    }
+  },
+  external: ['chart.js'],
+  plugins: [
+    resolve(),
+    commonjs(),
+    babel()
+  ]
+}];

rollup.config.js

@@ -459,8 +459,6 @@ const HierarchicalPlugin = {
       const node = parents[i];
       const isParentOfFirstChild = node.children[0] === parents[i + 1] || i === parents.length - 1;
 
-      console.log(node.label, 'in range');
-
       const parent = flat[node.parent];
 
       // first child of expanded parent

src/plugin/hierarchical.js

@@ -147,9 +147,8 @@ export function flatChildren(node, flat) {
     // not the last child
     const nextSibling = flat[node.parent].children[node.relIndex + 1];
     return flat.slice(firstChild.index, nextSibling.index);
-  } else {
-    return flat.slice(firstChild.index); // till end
   }
+  return flat.slice(firstChild.index); // till end
 }
 
 /**