[Refactor] misc cleanup

Author: ljharb

.eslintrc

@@ -13,6 +13,7 @@
         "func-name-matching": 0,
         "id-length": [2, { "min": 1, "max": 25, "properties": "never" }],
         "indent": [2, 4],
+        "max-lines": 0,
         "max-lines-per-function": [2, { "max": 150 }],
         "max-params": [2, 18],
         "max-statements": [2, 100],

lib/parse.js

@@ -86,7 +86,8 @@ var parseValues = function parseQueryStringValues(str, options) {
         var bracketEqualsPos = part.indexOf(']=');
         var pos = bracketEqualsPos === -1 ? part.indexOf('=') : bracketEqualsPos + 1;
 
-        var key, val;
+        var key;
+        var val;
         if (pos === -1) {
             key = options.decoder(part, defaults.decoder, charset, 'key');
             val = options.strictNullHandling ? null : '';

lib/stringify.js

@@ -34,11 +34,13 @@ var defaults = {
     arrayFormat: 'indices',
     charset: 'utf-8',
     charsetSentinel: false,
+    commaRoundTrip: false,
     delimiter: '&',
     encode: true,
     encodeDotInKeys: false,
     encoder: utils.encode,
     encodeValuesOnly: false,
+    filter: void undefined,
     format: defaultFormat,
     formatter: formats.formatters[defaultFormat],
     // deprecated
@@ -160,7 +162,9 @@ var stringify = function stringify(
 
     for (var j = 0; j < objKeys.length; ++j) {
         var key = objKeys[j];
-        var value = typeof key === 'object' && typeof key.value !== 'undefined' ? key.value : obj[key];
+        var value = typeof key === 'object' && typeof key.value !== 'undefined'
+            ? key.value
+            : obj[key];
 
         if (skipNulls && value === null) {
             continue;
@@ -257,7 +261,7 @@ var normalizeStringifyOptions = function normalizeStringifyOptions(opts) {
         arrayFormat: arrayFormat,
         charset: charset,
         charsetSentinel: typeof opts.charsetSentinel === 'boolean' ? opts.charsetSentinel : defaults.charsetSentinel,
-        commaRoundTrip: opts.commaRoundTrip,
+        commaRoundTrip: !!opts.commaRoundTrip,
         delimiter: typeof opts.delimiter === 'undefined' ? defaults.delimiter : opts.delimiter,
         encode: typeof opts.encode === 'boolean' ? opts.encode : defaults.encode,
         encodeDotInKeys: typeof opts.encodeDotInKeys === 'boolean' ? opts.encodeDotInKeys : defaults.encodeDotInKeys,
@@ -308,12 +312,13 @@ module.exports = function (object, opts) {
     var sideChannel = getSideChannel();
     for (var i = 0; i < objKeys.length; ++i) {
         var key = objKeys[i];
+        var value = obj[key];
 
-        if (options.skipNulls && obj[key] === null) {
+        if (options.skipNulls && value === null) {
             continue;
         }
         pushToArray(keys, stringify(
-            obj[key],
+            value,
             key,
             generateArrayPrefix,
             commaRoundTrip,

lib/utils.js

@@ -54,7 +54,10 @@ var merge = function merge(target, source, options) {
         if (isArray(target)) {
             target.push(source);
         } else if (target && typeof target === 'object') {
-            if ((options && (options.plainObjects || options.allowPrototypes)) || !has.call(Object.prototype, source)) {
+            if (
+                (options && (options.plainObjects || options.allowPrototypes))
+                || !has.call(Object.prototype, source)
+            ) {
                 target[source] = true;
             }
         } else {
@@ -108,7 +111,7 @@ var assign = function assignSingleSource(target, source) {
     }, target);
 };
 
-var decode = function (str, decoder, charset) {
+var decode = function (str, defaultDecoder, charset) {
     var strWithoutPlus = str.replace(/\+/g, ' ');
     if (charset === 'iso-8859-1') {
         // unescape never throws, no try...catch needed: