beforeinput composed: true
input composed: true
activeElement: editor
editor text: a
block text: a
selection anchor: #text
selection anchor offset: 1
beforeinput target ranges: 0-0, 1-1, 2-2, 3-3, 3-4, 2-3, 1-2
input types: insertText, insertText, insertText, insertText
input selection offsets: 1, 2, 3, 4