evjs - npm Package Compare versions

Comparing version 0.2.4 to 0.2.5

dist/generation/generation.js

@@ -20,7 +20,5 @@ "use strict";
             mutation: config.mutation || 0.2,
-            keepFittest: typeof config.keepFittest !== 'undefined'
-                ? config.keepFittest : true,
+            keepFittest: typeof config.keepFittest !== 'undefined' ? config.keepFittest : true,
             optimizeKey: config.optimizeKey,
-            optimize: config.optimizeKey === 'Max'
-                ? new utils_1.Optimize().max : new utils_1.Optimize().min,
+            optimize: config.optimizeKey === 'Max' ? new utils_1.Optimize().max : new utils_1.Optimize().min,
             select: config.select,
@@ -35,3 +33,4 @@ pair: config.pair
         if (/tournament/g.test(this.config.select)) {
-            this.config.selectN = Number(this.config.select.replace(/[^0-9]/g, '')) || 2;
+            this.config.selectN =
+                Number(this.config.select.replace(/[^0-9]/g, '')) || 2;
             this.config.select = this.config.select.replace(/[0-9]/g, '');
@@ -43,5 +42,3 @@ }
         while (this.individuals.length < this.config.size) {
-            const entity = typeof seed === 'function'
-                ? seed()
-                : seed;
+            const entity = typeof seed === 'function' ? seed() : seed;
             const config = Object.assign({}, { entity }, this.individualConfig);
@@ -70,3 +67,4 @@ const individual = new individual_1.Individual(config).evolve();
         if (this.config.keepFittest) {
-            generation.individuals.push(individuals.shift());
+            generation.individuals.push(individuals[0]);
+            generation.individuals.push(individuals[0].evolve());
         }
@@ -88,5 +86,3 @@ const select = new utils_1.Select(this.config.optimize);
                 let kid = selectFn(select)[0];
-                kid = Math.random() <= this.config.mutation
-                    ? kid.evolve()
-                    : kid;
+                kid = Math.random() <= this.config.mutation ? kid.evolve() : kid;
                 generation.add(kid);
@@ -98,4 +94,3 @@ }
     get stats() {
-        const fitnesses = this.individuals
-            .map(individual => individual.fitness);
+        const fitnesses = this.individuals.map(individual => individual.fitness);
         const mean = fitnesses.reduce((a, b) => a + b) / fitnesses.length;
@@ -106,3 +101,3 @@ const stdev = this.getStandardDeviation(fitnesses, mean);
         if (this.config.optimizeKey === 'Min') {
-            max = [min, min = max][0];
+            max = [min, (min = max)][0];
         }
@@ -112,10 +107,8 @@ return { max, min, mean, stdev };
     getStandardDeviation(items, mean) {
-        const variance = items
-            .map(item => (item - mean) * (item - mean))
-            .reduce((a, b) => a + b) / items.length;
+        const variance = items.map(item => (item - mean) * (item - mean)).reduce((a, b) => a + b) /
+            items.length;
         return Math.sqrt(variance);
     }
     shouldBreed() {
-        return this.config.crossover > 0
-            && Math.random() <= this.config.crossover;
+        return this.config.crossover > 0 && Math.random() <= this.config.crossover;
     }
@@ -122,0 +115,0 @@ }

package.json

 {
   "name": "evjs",
-  "version": "0.2.4",
+  "version": "0.2.5",
   "description": "Generic genetic/evolution algorithm in JS",
@@ -5,0 +5,0 @@ "main": "dist/index.js",

No alert changes

Improved metrics

Total package byte prevSize

36099

increased by0.05%

Worsened metrics

Lines of code

484

decreased by-1.43%

No dependency changes