rollup config + dist folder

Update .gitignore

Author: aminya

.gitignore

@@ -1,2 +1,3 @@
 *.log
 node_modules
+dist

package.json

@@ -14,7 +14,7 @@
     "url": "https://github.com/JunoLab/language-weave/issues"
   },
   "homepage": "https://github.com/JunoLab/language-weave",
-  "main": "lib/main.js",
+  "main": "dist/main.js",
   "extensions": {
     ".json": [
       "package.json"

rollup.config.js

@@ -0,0 +1,51 @@
+import resolve from '@rollup/plugin-node-resolve';
+import commonjs from '@rollup/plugin-commonjs';
+import coffeescript from 'rollup-plugin-coffee-script';
+import {terser} from 'rollup-plugin-terser';
+
+let plugins = [
+    // if any (in deps as well): Convert CoffeeScript to JavaScript
+    coffeescript(),
+
+    // so Rollup can find externals
+    resolve({extensions: ['.js', '.coffee'], preferBuiltins: true}),
+
+    // so Rollup can convert externals to an ES module
+    commonjs(),
+];
+
+// minify only in production mode
+if (process.env.NODE_ENV === 'production') {
+    plugins.push(
+        // minify
+        terser({
+            ecma: 2018,
+            warnings: true,
+            compress: {
+                drop_console: true,
+            },
+        })
+    );
+}
+
+export default [
+    {
+        input: 'lib/main.js',
+        output: [
+            {
+                dir: "dist",
+                format: 'cjs',
+                sourcemap: true,
+            },
+        ],
+        // loaded externally
+        external: [
+            "atom-space-pen-views", // loaded because of errors
+            "atom",
+            // node stuff
+            "fs",
+            "path",
+        ],
+        plugins: plugins,
+    },
+];