Revert "Avoid property use and float->number conversion"
Revert "Avoid property use and float->number conversion"

This reverts commit ffef3dba002e91ecac6b0d6a888fac1076cc7279.

Tyriar/xterm.js,xtermjs/xterm.js,xtermjs/xterm.js,Tyriar/xterm.js,xtermjs/xterm.js,Tyriar/xterm.js,xtermjs/xterm.js,xtermjs/xterm.js,Tyriar/xterm.js,Tyriar/xterm.js