vendors/tempy.js/ignoreMap
    function ignoreMap(pattern) {
      var gmatcher = null;
      if (pattern.slice(-3) === "/**") {
        var gpattern = pattern.replace(/(\/\*\*)+$/, "");
        gmatcher = new Minimatch(gpattern, { dot: true });
      }
      return {
        matcher: new Minimatch(pattern, { dot: true }),
        gmatcher
      };
    }