仅作为标点符号匹配的Javascript正则表达式，没有数字

I'm trying to write a regex to split a sentence into words. My first thought was to split on spaces or punctuations then I realized that I don't want to split a number with decimals like "0.5" and I don't want to split a timestamp like "14:55:02". So, I tried to fix my problem with negative lookahead and negative lookbehind, but I'm not able to put them together... And lookbehind doesn't seem to be supported in javascript.I'm trying to write a regex to split a sentence