fix: node 6 and node 7 support (#44)

Author: alexander-akait

configs.js

@@ -138,6 +138,15 @@ function getJavascriptConfig() {
 
 		// https://node.green/
 		switch (minVersion) {
+			case 6: {
+				const config = { ...configs["javascript/es2016"] };
+
+				config.rules["prefer-exponentiation-operator"] = "off";
+
+				return config;
+			}
+			case 7:
+				return configs["javascript/es2016"];
 			case 8:
 			case 9:
 				return configs["javascript/es2017"];

configs/javascript.js

@@ -1215,6 +1215,10 @@ function getConfig(esVersion) {
 		config.rules["unicorn/prefer-spread"] = "off";
 	}
 
+	if (esVersion < 2018) {
+		config.rules["prefer-object-spread"] = "off";
+	}
+
 	if (esVersion < 2019) {
 		config.rules["unicorn/prefer-array-flat"] = "off";
 		config.rules["unicorn/prefer-array-flat-map"] = "off";