deps: [email protected]

npm · wraithgar · Nov 26, 2024 · Nov 25, 2024 · Nov 25, 2024 · Nov 25, 2024
commit fe3586f5b5122f24ae724c42488732656d4bb54e
@@ -1,3 +1,8 @@
+unreleased
+==================
+
+  * Added an option preferred encodings array #59
+
 0.6.3 / 2022-01-22
 ==================
 

@@ -44,13 +44,13 @@ Negotiator.prototype.charsets = function charsets(available) {
   return preferredCharsets(this.request.headers['accept-charset'], available);
 };
 
-Negotiator.prototype.encoding = function encoding(available) {
-  var set = this.encodings(available);
+Negotiator.prototype.encoding = function encoding(available, preferred) {
+  var set = this.encodings(available, preferred);
   return set && set[0];
 };
 
-Negotiator.prototype.encodings = function encodings(available) {
-  return preferredEncodings(this.request.headers['accept-encoding'], available);
+Negotiator.prototype.encodings = function encodings(available, preferred) {
+  return preferredEncodings(this.request.headers['accept-encoding'], available, preferred);
 };
 
 Negotiator.prototype.language = function language(available) {

@@ -96,7 +96,7 @@ function parseEncoding(str, i) {
  */
 
 function getEncodingPriority(encoding, accepted, index) {
-  var priority = {o: -1, q: 0, s: 0};
+  var priority = {encoding: encoding, o: -1, q: 0, s: 0};
 
   for (var i = 0; i < accepted.length; i++) {
     var spec = specify(encoding, accepted[i], index);
@@ -123,6 +123,7 @@ function specify(encoding, spec, index) {
   }
 
   return {
+    encoding: encoding,
     i: index,
     o: spec.i,
     q: spec.q,
@@ -135,14 +136,34 @@ function specify(encoding, spec, index) {
  * @public
  */
 
-function preferredEncodings(accept, provided) {
+function preferredEncodings(accept, provided, preferred) {
   var accepts = parseAcceptEncoding(accept || '');
 
+  var comparator = preferred ? function comparator (a, b) {
+    if (a.q !== b.q) {
+      return b.q - a.q // higher quality first
+    }
+
+    var aPreferred = preferred.indexOf(a.encoding)
+    var bPreferred = preferred.indexOf(b.encoding)
+
+    if (aPreferred === -1 && bPreferred === -1) {
+      // consider the original specifity/order
+      return (b.s - a.s) || (a.o - b.o) || (a.i - b.i)
+    }
+
+    if (aPreferred !== -1 && bPreferred !== -1) {
+      return aPreferred - bPreferred // consider the preferred order
+    }
+
+    return aPreferred === -1 ? 1 : -1 // preferred first
+  } : compareSpecs;
+
   if (!provided) {
     // sorted list of all encodings
     return accepts
       .filter(isQuality)
-      .sort(compareSpecs)
+      .sort(comparator)
       .map(getFullEncoding);
   }
 
@@ -151,7 +172,7 @@ function preferredEncodings(accept, provided) {
   });
 
   // sorted list of accepted encodings
-  return priorities.filter(isQuality).sort(compareSpecs).map(function getEncoding(priority) {
+  return priorities.filter(isQuality).sort(comparator).map(function getEncoding(priority) {
     return provided[priorities.indexOf(priority)];
   });
 }
@@ -162,7 +183,7 @@ function preferredEncodings(accept, provided) {
  */
 
 function compareSpecs(a, b) {
-  return (b.q - a.q) || (b.s - a.s) || (a.o - b.o) || (a.i - b.i) || 0;
+  return (b.q - a.q) || (b.s - a.s) || (a.o - b.o) || (a.i - b.i);
 }
 
 /**

@@ -69,7 +69,7 @@ function parseMediaType(str, i) {
 
       // get the value, unwrapping quotes
       var value = val && val[0] === '"' && val[val.length - 1] === '"'
-        ? val.substr(1, val.length - 2)
+        ? val.slice(1, -1)
         : val;
 
       if (key === 'q') {
@@ -238,8 +238,8 @@ function splitKeyValuePair(str) {
   if (index === -1) {
     key = str;
   } else {
-    key = str.substr(0, index);
-    val = str.substr(index + 1);
+    key = str.slice(0, index);
+    val = str.slice(index + 1);
   }
 
   return [key, val];

@@ -1,7 +1,7 @@
 {
   "name": "negotiator",
   "description": "HTTP content negotiation",
-  "version": "0.6.3",
+  "version": "0.6.4",
   "contributors": [
     "Douglas Christopher Wilson <[email protected]>",
     "Federico Romero <[email protected]>",

@@ -11787,9 +11787,9 @@
       }
     },
     "node_modules/negotiator": {
-      "version": "0.6.3",
-      "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.3.tgz",
-      "integrity": "sha512-+EUsqGPLsM+j/zdChZjsnX51g4XrHFOIXwfnCVPGlQk/k5giakcKsuxCObBRu6DSm9opw/O6slWbJdghQM4bBg==",
+      "version": "0.6.4",
+      "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.4.tgz",
+      "integrity": "sha512-myRT3DiWPHqho5PrJaIRyaMv2kgYf0mUVgBNOYMuCH5Ki1yEiQaf/ZJuQ62nvpc44wL5WDbTX7yGJi1Neevw8w==",
       "inBundle": true,
       "license": "MIT",
       "engines": {