Do not fail if optional dependencies not installed

Mingun · Apr 14, 2018 · 890900e · 890900e
1 parent 3f3e4e7
commit 890900e
Showing 1 changed file with 13 additions and 2 deletions.
diff --git a/lib/index.js b/lib/index.js
@@ -1,6 +1,17 @@
 'use strict';
 
 module.exports = {
-  Diff: require('./diff'),
-  generateDiff: require('./generate'),
+  Diff: require('./diff')
 };
+
+try {
+  // Optional dependency
+  module.exports.generateDiff = require('./generate');
+} catch (e) {
+  // istanbul ignore next
+  if (e.code !== 'MODULE_NOT_FOUND') {
+    throw e;
+  }
+  // istanbul ignore next
+  Object.defineProperty(module.exports, 'generateDiff', { get() { throw e; } });
+}