reduce use of parseFloat

as it silently strips non-numeric suffixes (e.g. a value of "123 foo" is transformed into a numeric value of 123 by `parseFloat`, which is typically not what we desire)

modules/validations/crossing_ways.js

@@ -523,7 +523,7 @@ export function validationCrossingWays(context) {
 
                     var crossedWay = graph.hasEntity(crossedWayID);
                     // use the explicit width of the crossed feature as the structure length, if available
-                    var structLengthMeters = crossedWay && crossedWay.tags.width && parseFloat(crossedWay.tags.width);
+                    var structLengthMeters = crossedWay && isFinite(crossedWay.tags.width) && Number(crossedWay.tags.width);
                     if (!structLengthMeters) {
                         // if no explicit width is set, approximate the width based on the tags
                         structLengthMeters = crossedWay && crossedWay.impliedLineWidthMeters();

modules/validations/unsquare_way.js

@@ -56,7 +56,7 @@ export function validationUnsquareWay(context) {
 
         // user-configurable square threshold
         var storedDegreeThreshold = prefs('validate-square-degrees');
-        var degreeThreshold = isNaN(storedDegreeThreshold) ? DEFAULT_DEG_THRESHOLD : parseFloat(storedDegreeThreshold);
+        var degreeThreshold = isFinite(storedDegreeThreshold) ? Number(storedDegreeThreshold) : DEFAULT_DEG_THRESHOLD;
 
         var points = nodes.map(function(node) { return context.projection(node.loc); });
         if (!geoOrthoCanOrthogonalize(points, isClosed, epsilon, degreeThreshold, true)) return [];