use rollup instead of gulp/webpack (#1)

* chore: remove no longer needed bower.json

* chore: do not use gulp for linting

* chore: use individual js files for examples

* chore: change from require to import

* chore: use vis.min.js for basic examples for testing

* feat: use rollup to generate individual libs

* chore: remove gulp and its dependencies

* chore: add vscode mocha debug config

* fix: fix tests

.babelrc

@@ -1,8 +1,7 @@
 {
-  "presets": ["env"],
-  "plugins": [
-    "transform-es3-property-literals",
-    "transform-es3-member-expression-literals",
-    "transform-runtime"
+  "presets": [
+      ["@babel/preset-env", {
+          "targets": "> 0.1% or not dead"
+      }]
   ]
 }

.eslintrc.js

@@ -0,0 +1,42 @@
+module.exports = {
+  env: {
+    browser: true,
+    es6: true,
+    node: true,
+    mocha: true
+  },
+
+  parserOptions: {
+    sourceType: "module",
+  },
+
+  extends: "eslint:recommended",
+
+  // For the full list of rules, see: http://eslint.org/docs/rules/
+  rules: {
+    complexity: [2, 55],
+    "max-statements": [2, 115],
+    "no-unreachable": 1,
+    "no-useless-escape": 0,
+
+    "no-console": 0,
+    // To flag presence of console.log without breaking linting:
+    //"no-console": ["warn", { allow: ["warn", "error"] }],
+
+    "require-jsdoc": ["error", {
+        require: {
+          FunctionDeclaration: true,
+          MethodDefinition: true,
+          ClassDeclaration: true,
+          ArrowFunctionExpression: false
+        }
+    }],
+    "valid-jsdoc": [2, {
+      requireReturnDescription: false,
+      requireReturn: false,
+      requireParamDescription: false,
+      requireReturnType: true
+    }],
+    "guard-for-in": 1,
+  },
+}

.vscode/launch.json

@@ -0,0 +1,39 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+        "type": "node",
+        "request": "launch",
+        "name": "Mocha All",
+        "program": "${workspaceFolder}/node_modules/mocha/bin/_mocha",
+        "args": [
+            "--exit",  
+            "--timeout",
+            "999999",
+            "--colors",
+            "--require",
+            "@babel/register",
+            "${workspaceFolder}/test"
+        ],
+        "console": "integratedTerminal",
+        "internalConsoleOptions": "neverOpen"
+    },
+    {
+        "type": "node",
+        "request": "launch",
+        "name": "Mocha Current File",
+        "program": "${workspaceFolder}/node_modules/mocha/bin/_mocha",
+        "args": [
+            "--exit",
+            "--timeout",
+            "999999",
+            "--colors",
+            "--require",
+            "@babel/register",
+            "${file}"
+        ],
+        "console": "integratedTerminal",
+        "internalConsoleOptions": "neverOpen"
+    }
+  ]
+}