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node_modules/ws/lib/extension.js

@@ -11,6 +11,7 @@
 // tokenChars[34] === 0 // '"'
 // ...
 //
+// prettier-ignore
 const tokenChars = [
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0 - 15
   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 16 - 31
@@ -32,9 +33,9 @@ const tokenChars = [
  *     parameter value
  * @private
  */
-function push (dest, name, elem) {
-  if (Object.prototype.hasOwnProperty.call(dest, name)) dest[name].push(elem);
-  else dest[name] = [elem];
+function push(dest, name, elem) {
+  if (dest[name] === undefined) dest[name] = [elem];
+  else dest[name].push(elem);
 }
 
 /**
@@ -44,29 +45,30 @@ function push (dest, name, elem) {
  * @return {Object} The parsed object
  * @public
  */
-function parse (header) {
-  const offers = {};
+function parse(header) {
+  const offers = Object.create(null);
 
   if (header === undefined || header === '') return offers;
 
-  var params = {};
-  var mustUnescape = false;
-  var isEscaping = false;
-  var inQuotes = false;
-  var extensionName;
-  var paramName;
-  var start = -1;
-  var end = -1;
+  let params = Object.create(null);
+  let mustUnescape = false;
+  let isEscaping = false;
+  let inQuotes = false;
+  let extensionName;
+  let paramName;
+  let start = -1;
+  let end = -1;
+  let i = 0;
 
-  for (var i = 0; i < header.length; i++) {
+  for (; i < header.length; i++) {
     const code = header.charCodeAt(i);
 
     if (extensionName === undefined) {
       if (end === -1 && tokenChars[code] === 1) {
         if (start === -1) start = i;
-      } else if (code === 0x20/* ' ' */|| code === 0x09/* '\t' */) {
+      } else if (code === 0x20 /* ' ' */ || code === 0x09 /* '\t' */) {
         if (end === -1 && start !== -1) end = i;
-      } else if (code === 0x3b/* ';' */ || code === 0x2c/* ',' */) {
+      } else if (code === 0x3b /* ';' */ || code === 0x2c /* ',' */) {
         if (start === -1) {
           throw new SyntaxError(`Unexpected character at index ${i}`);
         }
@@ -75,7 +77,7 @@ function parse (header) {
         const name = header.slice(start, end);
         if (code === 0x2c) {
           push(offers, name, params);
-          params = {};
+          params = Object.create(null);
         } else {
           extensionName = name;
         }
@@ -98,12 +100,12 @@ function parse (header) {
         push(params, header.slice(start, end), true);
         if (code === 0x2c) {
           push(offers, extensionName, params);
-          params = {};
+          params = Object.create(null);
           extensionName = undefined;
         }
 
         start = end = -1;
-      } else if (code === 0x3d/* '=' */&& start !== -1 && end === -1) {
+      } else if (code === 0x3d /* '=' */ && start !== -1 && end === -1) {
         paramName = header.slice(start, i);
         start = end = -1;
       } else {
@@ -125,10 +127,10 @@ function parse (header) {
       } else if (inQuotes) {
         if (tokenChars[code] === 1) {
           if (start === -1) start = i;
-        } else if (code === 0x22/* '"' */ && start !== -1) {
+        } else if (code === 0x22 /* '"' */ && start !== -1) {
           inQuotes = false;
           end = i;
-        } else if (code === 0x5c/* '\' */) {
+        } else if (code === 0x5c /* '\' */) {
           isEscaping = true;
         } else {
           throw new SyntaxError(`Unexpected character at index ${i}`);
@@ -145,7 +147,7 @@ function parse (header) {
         }
 
         if (end === -1) end = i;
-        var value = header.slice(start, end);
+        let value = header.slice(start, end);
         if (mustUnescape) {
           value = value.replace(/\\/g, '');
           mustUnescape = false;
@@ -153,7 +155,7 @@ function parse (header) {
         push(params, paramName, value);
         if (code === 0x2c) {
           push(offers, extensionName, params);
-          params = {};
+          params = Object.create(null);
           extensionName = undefined;
         }
 
@@ -172,7 +174,7 @@ function parse (header) {
   if (end === -1) end = i;
   const token = header.slice(start, end);
   if (extensionName === undefined) {
-    push(offers, token, {});
+    push(offers, token, params);
   } else {
     if (paramName === undefined) {
       push(params, token, true);
@@ -194,18 +196,28 @@ function parse (header) {
  * @return {String} A string representing the given object
  * @public
  */
-function format (extensions) {
-  return Object.keys(extensions).map((extension) => {
-    var configurations = extensions[extension];
-    if (!Array.isArray(configurations)) configurations = [configurations];
-    return configurations.map((params) => {
-      return [extension].concat(Object.keys(params).map((k) => {
-        var values = params[k];
-        if (!Array.isArray(values)) values = [values];
-        return values.map((v) => v === true ? k : `${k}=${v}`).join('; ');
-      })).join('; ');
-    }).join(', ');
-  }).join(', ');
+function format(extensions) {
+  return Object.keys(extensions)
+    .map((extension) => {
+      let configurations = extensions[extension];
+      if (!Array.isArray(configurations)) configurations = [configurations];
+      return configurations
+        .map((params) => {
+          return [extension]
+            .concat(
+              Object.keys(params).map((k) => {
+                let values = params[k];
+                if (!Array.isArray(values)) values = [values];
+                return values
+                  .map((v) => (v === true ? k : `${k}=${v}`))
+                  .join('; ');
+              })
+            )
+            .join('; ');
+        })
+        .join(', ');
+    })
+    .join(', ');
 }
 
 module.exports = { format, parse };