add comments

2016-12-16 01:12:50 +00:00
parent 4cb7e5009a
commit 2907d663dc
2 changed files with 4 additions and 0 deletions
--- a/packages/babel-generator/src/buffer.js
+++ b/packages/babel-generator/src/buffer.js
@@ -46,6 +46,8 @@ export default class Buffer {
    };

    if (map) {
+      // The `.map` property is lazy to allow callers to use the raw mappings
+      // without any overhead
      Object.defineProperty(result, "map", {
        configurable: true,
        enumerable: true,