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