add moveToOffsets transform, fixes #70

lib/models/selection.js

@@ -456,6 +456,22 @@ class Selection extends new Record(DEFAULTS) {
     })
   }
 
+  /**
+   * Move the selection to `anchor` and `focus` offsets.
+   *
+   * @param {Number} anchor
+   * @param {Number} focus (optional)
+   * @return {Selection} selection
+   */
+
+  moveToOffsets(anchor, focus = anchor) {
+    return this.merge({
+      anchorOffset: anchor,
+      focusOffset: focus,
+      isBackward: null
+    })
+  }
+
   /**
    * Extend the focus point forward `n` characters.
    *

lib/models/transform.js

@@ -61,6 +61,7 @@ const SELECTION_TRANSFORMS = [
   'moveToEnd',
   'moveToEndOf',
   'moveToFocus',
+  'moveToOffsets',
   'moveToRangeOf',
   'moveToStart',
   'moveToStartOf'