You probably mean = and ==. They have 3× difference in width, which, in practice (I’m using Fira Code for a year now), is more than enough to tell the difference.<p>Regarding the difference between == and ===, latter has three lines (and so does !==), so in fact in Fira Code === and !== the looks implies the meaning, whether in other cases you have to bend your mind to accept that negation of “three equals” is a “two equals and a bang”