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build/node_modules/cheerio/lib/api/forms.js

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+// https://github.com/jquery/jquery/blob/2.1.3/src/manipulation/var/rcheckableType.js
+// https://github.com/jquery/jquery/blob/2.1.3/src/serialize.js
+var _ = require('lodash'),
+    submittableSelector = 'input,select,textarea,keygen',
+    rCRLF = /\r?\n/g,
+    rcheckableType = /^(?:checkbox|radio)$/i,
+    rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i;
+
+exports.serializeArray = function() {
+  // Resolve all form elements from either forms or collections of form elements
+  var Cheerio = this.constructor;
+  return this.map(function() {
+      var elem = this;
+      var $elem = Cheerio(elem);
+      if (elem.name === 'form') {
+        return $elem.find(submittableSelector).toArray();
+      } else {
+        return $elem.filter(submittableSelector).toArray();
+      }
+    }).filter(function() {
+      var $elem = Cheerio(this);
+      var type = $elem.attr('type');
+
+      // Verify elements have a name (`attr.name`) and are not disabled (`:disabled`)
+      return $elem.attr('name') && !$elem.is(':disabled') &&
+        // and cannot be clicked (`[type=submit]`) or are used in `x-www-form-urlencoded` (`[type=file]`)
+        !rsubmitterTypes.test(type) &&
+        // and are either checked/don't have a checkable state
+        ($elem.attr('checked') || !rcheckableType.test(type));
+    // Convert each of the elements to its value(s)
+    }).map(function(i, elem) {
+      var $elem = Cheerio(elem);
+      var name = $elem.attr('name');
+      var val = $elem.val();
+
+      // If there is no value set (e.g. `undefined`, `null`), then return nothing
+      if (val == null) {
+        return null;
+      } else {
+        // If we have an array of values (e.g. `<select multiple>`), return an array of key/value pairs
+        if (Array.isArray(val)) {
+          return _.map(val, function(val) {
+            // We trim replace any line endings (e.g. `\r` or `\r\n` with `\r\n`) to guarantee consistency across platforms
+            //   These can occur inside of `<textarea>'s`
+            return {name: name, value: val.replace( rCRLF, '\r\n' )};
+          });
+        // Otherwise (e.g. `<input type="text">`, return only one key/value pair
+        } else {
+          return {name: name, value: val.replace( rCRLF, '\r\n' )};
+        }
+      }
+    // Convert our result to an array
+    }).get();
+};