update jsdoc

diff --git a/extras/hairlines.js b/extras/hairlines.js
index b9f0b1a..255edd5 100644 (file)
--- a/extras/hairlines.js
+++ b/extras/hairlines.js
@@ -323,7 +323,8 @@ hairlines.prototype.destroy = function() {
  *
  * @typedef {
  *   xval:  number,       // x-value (i.e. millis or a raw number)
- *   interpolated: bool   // alternative is to snap to closest
+ *   interpolated: bool,  // alternative is to snap to closest
+ *   selected: bool       // whether the hairline is selected.
  * } PublicHairline
  */