This package provides a simple function to calculate similarity between two strings it is based this ruby gem amatch and this article.
The function returns a value between 0 and 1, when 0 been strings completely different and 1 when they are equal.
The result from this package may have a very small difference from the amatch gem in some cases, but in my tests the difference is irrelevant since it was less than 0.05.
const pairDistance = require("pair-distance");
const similarity = pairDistance("James Bond", "Bond, James Bond")
console.log(similarity); // prints: 0.9411764705882353-1.1.0: Ignoring diacritics
-1.0.0: First commit