Finds last index of an infix.
Alternatives: searchInfix, searchInfixRight, searchInfixAll.
Similar: hasInfix, searchInfix.
Similar: search, scan, find.
This is part of package extra-array.
array.searchInfixRight(x, y, [fc], [fm]);
// x: an array
// y: search infix
// fc: compare function (a, b)
// fm: map function (v, i, x)
const array = require("extra-array");
var x = [1, 2, 3, 4];
var y = [2, 3];
array.searchInfixRight(x, y);
// 1
var y = [-2, -3];
array.searchInfixRight(x, y);
// -1
array.searchInfixRight(x, y, (a, b) => Math.abs(a) - Math.abs(b));
// 1
array.searchInfixRight(x, y, null, v => Math.abs(v));
// 1