src This disconnect()

Disconnect this observer from receiving DOM mutation events.

src new make(|MutationRec[]| callback)

Constructor.

src This observe(Elem target, Str:Obj opts)

Register to receive DOM mutation events for given node. At least one option is required:

• "childList": true to observe node additions and removals on target (including text nodes)
• "attrs": true to observe target attribute mutations
• "charData": true to observe target data mutation
• "subtree": true to observe target and target's descendant mutations
• "attrOldVal": true to capture attribute value before mutation (requires "attrs":'true')
• "charDataOldVal": true to capture target's data before mutation (requires "charData":'true')
• "attrFilter": Str[] whitelist of attribute names to observe (requires "attrs":'true')

src MutationRec[] takeRecs()

Empties this observers's record queue and returns what was in there.