feat: Refactor to use rollupBuild.write()

This change improves compatibility. Allows plugins
that use write hooks to work.

Also, support conventional exports in
https://broccoli.build/plugins.html#example-plugin

Export types declarations.

Author: krisselden

.nycrc.json

@@ -1,7 +1,12 @@
 {
   "all": true,
+  "check-coverage": true,
+  "lines": 95,
+  "statements": 95,
+  "functions": 95,
+  "branches": 85,
   "per-file": false,
-  "include": ["dist/**", "lib/**"],
-  "exclude": ["dist/tests/**"],
+  "include": ["dist/**", "src/**"],
+  "exclude": ["tests/**"],
   "extension": ["js", "ts"]
 }

.travis.yml

@@ -6,3 +6,8 @@ node_js:
 cache: yarn
 script:
   - yarn test
+branches:
+  only:
+    - master
+    # npm version tags
+    - /^v\d+\.\d+\.\d+/

appveyor.yml

@@ -22,3 +22,7 @@ build: off
 
 # Set build version format here instead of in the admin panel.
 version: '{build}'
+
+branches:
+  only:
+    - master

index.d.ts

@@ -0,0 +1,8 @@
+export {
+  default,
+  BroccoliRollup,
+  BroccoliRollupOptions,
+  InputOptions,
+  OutputOptions,
+  RollupOptions,
+} from './dist';

index.js

@@ -0,0 +1,41 @@
+const rollup = require('./dist');
+
+// old API just module.exports = class BroccoliRollup
+// this proxies export to it, but catches default and BroccoliRollup keys
+// and also, call redirects to default().
+module.exports = new Proxy(rollup.BroccoliRollup, {
+  // support default interop with require
+  apply(_, thisArg, args) {
+    return Reflect.apply(rollup.default, thisArg, args);
+  },
+  get(target, prop) {
+    switch (prop) {
+      case 'default':
+      case 'BroccoliRollup':
+        return rollup[prop];
+      default:
+        return target[prop];
+    }
+  },
+  has(target, prop) {
+    switch (prop) {
+      case 'default':
+      case 'BroccoliRollup':
+        return true;
+      default:
+        return prop in target;
+    }
+  },
+  ownKeys(target) {
+    return ['default', 'BroccoliRollup'].concat(Reflect.ownKeys(target));
+  },
+  getOwnPropertyDescriptor(target, prop) {
+    switch (prop) {
+      case 'default':
+      case 'BroccoliRollup':
+        return Reflect.getOwnPropertyDescriptor(rollup, prop);
+      default:
+        return Reflect.getOwnPropertyDescriptor(target, prop);
+    }
+  },
+});