diff --git a/browser-source-map-support.js b/browser-source-map-support.js
index 782da50..9093c64 100644
--- a/browser-source-map-support.js
+++ b/browser-source-map-support.js
@@ -99,16 +99,16 @@ u=/^data:.+,.+$/;A.urlParse=e;A.urlGenerate=p;A.normalize=t;A.join=m;A.isAbsolut
 g,n){var v=r(d.source,g.source);if(0!==v)return v;v=d.originalLine-g.originalLine;if(0!==v)return v;v=d.originalColumn-g.originalColumn;if(0!==v||n)return v;v=d.generatedColumn-g.generatedColumn;if(0!==v)return v;v=d.generatedLine-g.generatedLine;return 0!==v?v:r(d.name,g.name)};A.compareByGeneratedPositionsDeflated=function(d,g,n){var v=d.generatedLine-g.generatedLine;if(0!==v)return v;v=d.generatedColumn-g.generatedColumn;if(0!==v||n)return v;v=r(d.source,g.source);if(0!==v)return v;v=d.originalLine-
 g.originalLine;if(0!==v)return v;v=d.originalColumn-g.originalColumn;return 0!==v?v:r(d.name,g.name)};A.compareByGeneratedPositionsInflated=function(d,g){var n=d.generatedLine-g.generatedLine;if(0!==n)return n;n=d.generatedColumn-g.generatedColumn;if(0!==n)return n;n=r(d.source,g.source);if(0!==n)return n;n=d.originalLine-g.originalLine;if(0!==n)return n;n=d.originalColumn-g.originalColumn;return 0!==n?n:r(d.name,g.name)};A.parseSourceMapInput=function(d){return JSON.parse(d.replace(/^\)]}'[^\n]*\n/,
 ""))};A.computeSourceURL=function(d,g,n){g=g||"";d&&("/"!==d[d.length-1]&&"/"!==g[0]&&(d+="/"),g=d+g);if(n){d=e(n);if(!d)throw Error("sourceMapURL could not be parsed");d.path&&(n=d.path.lastIndexOf("/"),0<=n&&(d.path=d.path.substring(0,n+1)));g=m(p(d),g)}return t(g)}},{}],20:[function(C,J,A){A.SourceMapGenerator=C("./lib/source-map-generator").SourceMapGenerator;A.SourceMapConsumer=C("./lib/source-map-consumer").SourceMapConsumer;A.SourceNode=C("./lib/source-node").SourceNode},{"./lib/source-map-consumer":16,
-"./lib/source-map-generator":17,"./lib/source-node":18}],21:[function(C,J,A){(function(e){function p(){return"browser"===a?!0:"node"===a?!1:"undefined"!==typeof window&&"function"===typeof XMLHttpRequest&&!(window.require&&window.module&&window.process&&"renderer"===window.process.type)}function t(x){return function(B){for(var F=0;F<x.length;F++){var E=x[F](B);if(E)return E}return null}}function m(x,B){if(!x)return B;var F=n.dirname(x),E=/^\w+:\/\/[^\/]*/.exec(F);E=E?E[0]:"";var H=F.slice(E.length);
-return E&&/^\/\w:/.test(H)?(E+="/",E+n.resolve(F.slice(E.length),B).replace(/\\/g,"/")):E+n.resolve(F.slice(E.length),B)}function f(x){var B=h[x.source];if(!B){var F=N(x.source);F?(B=h[x.source]={url:F.url,map:new g(F.map)},B.map.sourcesContent&&B.map.sources.forEach(function(E,H){var M=B.map.sourcesContent[H];if(M){var S=m(B.url,E);b[S]=M}})):B=h[x.source]={url:null,map:null}}return B&&B.map&&"function"===typeof B.map.originalPositionFor&&(F=B.map.originalPositionFor(x),null!==F.source)?(F.source=
-m(B.url,F.source),F):x}function c(x){var B=/^eval at ([^(]+) \((.+):(\d+):(\d+)\)$/.exec(x);return B?(x=f({source:B[2],line:+B[3],column:B[4]-1}),"eval at "+B[1]+" ("+x.source+":"+x.line+":"+(x.column+1)+")"):(B=/^eval at ([^(]+) \((.+)\)$/.exec(x))?"eval at "+B[1]+" ("+c(B[2])+")":x}function l(){var x="";if(this.isNative())x="native";else{var B=this.getScriptNameOrSourceURL();!B&&this.isEval()&&(x=this.getEvalOrigin(),x+=", ");x=B?x+B:x+"<anonymous>";B=this.getLineNumber();null!=B&&(x+=":"+B,(B=
-this.getColumnNumber())&&(x+=":"+B))}B="";var F=this.getFunctionName(),E=!0,H=this.isConstructor();if(this.isToplevel()||H)H?B+="new "+(F||"<anonymous>"):F?B+=F:(B+=x,E=!1);else{H=this.getTypeName();"[object Object]"===H&&(H="null");var M=this.getMethodName();F?(H&&0!=F.indexOf(H)&&(B+=H+"."),B+=F,M&&F.indexOf("."+M)!=F.length-M.length-1&&(B+=" [as "+M+"]")):B+=H+"."+(M||"<anonymous>")}E&&(B+=" ("+x+")");return B}function q(x){var B={};Object.getOwnPropertyNames(Object.getPrototypeOf(x)).forEach(function(F){B[F]=
-/^(?:is|get)/.test(F)?function(){return x[F].call(x)}:x[F]});B.toString=l;return B}function r(x,B){void 0===B&&(B={nextPosition:null,curPosition:null});if(x.isNative())return B.curPosition=null,x;var F=x.getFileName()||x.getScriptNameOrSourceURL();if(F){var E=x.getLineNumber(),H=x.getColumnNumber()-1,M=/^v(10\.1[6-9]|10\.[2-9][0-9]|10\.[0-9]{3,}|1[2-9]\d*|[2-9]\d|\d{3,}|11\.11)/,S=M.test;var V="object"===typeof e&&null!==e?e.version:"";M=S.call(M,V)?0:62;1===E&&H>M&&!p()&&!x.isEval()&&(H-=M);var O=
-f({source:F,line:E,column:H});B.curPosition=O;x=q(x);var T=x.getFunctionName;x.getFunctionName=function(){return null==B.nextPosition?T():B.nextPosition.name||T()};x.getFileName=function(){return O.source};x.getLineNumber=function(){return O.line};x.getColumnNumber=function(){return O.column+1};x.getScriptNameOrSourceURL=function(){return O.source};return x}var Q=x.isEval()&&x.getEvalOrigin();Q&&(Q=c(Q),x=q(x),x.getEvalOrigin=function(){return Q});return x}function k(x,B){L&&(b={},h={});for(var F=
-(x.name||"Error")+": "+(x.message||""),E={nextPosition:null,curPosition:null},H=[],M=B.length-1;0<=M;M--)H.push("\n    at "+r(B[M],E)),E.nextPosition=E.curPosition;E.curPosition=E.nextPosition=null;return F+H.reverse().join("")}function u(x){var B=/\n    at [^(]+ \((.*):(\d+):(\d+)\)/.exec(x.stack);if(B){x=B[1];var F=+B[2];B=+B[3];var E=b[x];if(!E&&v&&v.existsSync(x))try{E=v.readFileSync(x,"utf8")}catch(H){E=""}if(E&&(E=E.split(/(?:\r\n|\r|\n)/)[F-1]))return x+":"+F+"\n"+E+"\n"+Array(B).join(" ")+
-"^"}return null}function d(){var x=e.emit;e.emit=function(B){if("uncaughtException"===B){var F=arguments[1]&&arguments[1].stack,E=0<this.listeners(B).length;if(F&&!E){F=arguments[1];E=u(F);var H="object"===typeof e&&null!==e?e.stderr:void 0;H&&H._handle&&H._handle.setBlocking&&H._handle.setBlocking(!0);E&&(console.error(),console.error(E));console.error(F.stack);"object"===typeof e&&null!==e&&"function"===typeof e.exit&&e.exit(1);return}}return x.apply(this,arguments)}}var g=C("source-map").SourceMapConsumer,
-n=C("path");try{var v=C("fs");v.existsSync&&v.readFileSync||(v=null)}catch(x){}var z=C("buffer-from"),G=!1,D=!1,L=!1,a="auto",b={},h={},w=/^data:application\/json[^,]+base64,/,y=[],I=[],K=t(y);y.push(function(x){x=x.trim();/^file:/.test(x)&&(x=x.replace(/file:\/\/\/(\w:)?/,function(E,H){return H?"":"/"}));if(x in b)return b[x];var B="";try{if(v)v.existsSync(x)&&(B=v.readFileSync(x,"utf8"));else{var F=new XMLHttpRequest;F.open("GET",x,!1);F.send(null);4===F.readyState&&200===F.status&&(B=F.responseText)}}catch(E){}return b[x]=
-B});var N=t(I);I.push(function(x){a:{if(p())try{var B=new XMLHttpRequest;B.open("GET",x,!1);B.send(null);var F=B.getResponseHeader("SourceMap")||B.getResponseHeader("X-SourceMap");if(F){var E=F;break a}}catch(M){}E=K(x);B=/(?:\/\/[@#][\s]*sourceMappingURL=([^\s'"]+)[\s]*$)|(?:\/\*[@#][\s]*sourceMappingURL=([^\s*'"]+)[\s]*(?:\*\/)[\s]*$)/mg;for(var H;F=B.exec(E);)H=F;E=H?H[1]:null}if(!E)return null;w.test(E)?(H=E.slice(E.indexOf(",")+1),H=z(H,"base64").toString(),E=x):(E=m(x,E),H=K(E));return H?{url:E,
-map:H}:null});var P=y.slice(0),W=I.slice(0);A.wrapCallSite=r;A.getErrorSource=u;A.mapSourcePosition=f;A.retrieveSourceMap=N;A.install=function(x){x=x||{};if(x.environment&&(a=x.environment,-1===["node","browser","auto"].indexOf(a)))throw Error("environment "+a+" was unknown. Available options are {auto, browser, node}");x.retrieveFile&&(x.overrideRetrieveFile&&(y.length=0),y.unshift(x.retrieveFile));x.retrieveSourceMap&&(x.overrideRetrieveSourceMap&&(I.length=0),I.unshift(x.retrieveSourceMap));if(x.hookRequire&&
-!p()){var B=J.require("module"),F=B.prototype._compile;F.__sourceMapSupport||(B.prototype._compile=function(E,H){b[H]=E;h[H]=void 0;return F.call(this,E,H)},B.prototype._compile.__sourceMapSupport=!0)}L||(L="emptyCacheBetweenOperations"in x?x.emptyCacheBetweenOperations:!1);G||(G=!0,Error.prepareStackTrace=k);if(!D){x="handleUncaughtExceptions"in x?x.handleUncaughtExceptions:!0;try{!1===J.require("worker_threads").isMainThread&&(x=!1)}catch(E){}x&&"object"===typeof e&&null!==e&&"function"===typeof e.on&&
-(D=!0,d())}};A.resetRetrieveHandlers=function(){y.length=0;I.length=0;y=P.slice(0);I=W.slice(0);N=t(I);K=t(y)}}).call(this,C("g5I+bs"))},{"buffer-from":4,fs:3,"g5I+bs":9,path:8,"source-map":20}]},{},[1]);return R});
+"./lib/source-map-generator":17,"./lib/source-node":18}],21:[function(C,J,A){(function(e){function p(){return"browser"===a?!0:"node"===a?!1:"undefined"!==typeof window&&"function"===typeof XMLHttpRequest&&!(window.require&&window.module&&window.process&&"renderer"===window.process.type)}function t(x){return function(B){for(var E=0;E<x.length;E++){var F=x[E](B);if(F)return F}return null}}function m(x,B){if(!x)return B;var E=n.dirname(x),F=/^\w+:\/\/[^\/]*/.exec(E);F=F?F[0]:"";E=E.slice(F.length);var H=
+B.startsWith(F)?B.slice(F.length):B;H=n.resolve(E,H);return F&&/^\/\w:/.test(E)?F+"/"+H.replace(/\\/g,"/"):F+H}function f(x){var B=h[x.source];if(!B){var E=N(x.source);E?(B=h[x.source]={url:E.url,map:new g(E.map)},B.map.sourcesContent&&B.map.sources.forEach(function(F,H){var M=B.map.sourcesContent[H];if(M){var S=m(B.url,F);b[S]=M}})):B=h[x.source]={url:null,map:null}}return B&&B.map&&"function"===typeof B.map.originalPositionFor&&(E=B.map.originalPositionFor(x),null!==E.source)?(E.source=m(B.url,
+E.source),E):x}function c(x){var B=/^eval at ([^(]+) \((.+):(\d+):(\d+)\)$/.exec(x);return B?(x=f({source:B[2],line:+B[3],column:B[4]-1}),"eval at "+B[1]+" ("+x.source+":"+x.line+":"+(x.column+1)+")"):(B=/^eval at ([^(]+) \((.+)\)$/.exec(x))?"eval at "+B[1]+" ("+c(B[2])+")":x}function l(){var x="";if(this.isNative())x="native";else{var B=this.getScriptNameOrSourceURL();!B&&this.isEval()&&(x=this.getEvalOrigin(),x+=", ");x=B?x+B:x+"<anonymous>";B=this.getLineNumber();null!=B&&(x+=":"+B,(B=this.getColumnNumber())&&
+(x+=":"+B))}B="";var E=this.getFunctionName(),F=!0,H=this.isConstructor();if(this.isToplevel()||H)H?B+="new "+(E||"<anonymous>"):E?B+=E:(B+=x,F=!1);else{H=this.getTypeName();"[object Object]"===H&&(H="null");var M=this.getMethodName();E?(H&&0!=E.indexOf(H)&&(B+=H+"."),B+=E,M&&E.indexOf("."+M)!=E.length-M.length-1&&(B+=" [as "+M+"]")):B+=H+"."+(M||"<anonymous>")}F&&(B+=" ("+x+")");return B}function q(x){var B={};Object.getOwnPropertyNames(Object.getPrototypeOf(x)).forEach(function(E){B[E]=/^(?:is|get)/.test(E)?
+function(){return x[E].call(x)}:x[E]});B.toString=l;return B}function r(x,B){void 0===B&&(B={nextPosition:null,curPosition:null});if(x.isNative())return B.curPosition=null,x;var E=x.getFileName()||x.getScriptNameOrSourceURL();if(E){var F=x.getLineNumber(),H=x.getColumnNumber()-1,M=/^v(10\.1[6-9]|10\.[2-9][0-9]|10\.[0-9]{3,}|1[2-9]\d*|[2-9]\d|\d{3,}|11\.11)/,S=M.test;var V="object"===typeof e&&null!==e?e.version:"";M=S.call(M,V)?0:62;1===F&&H>M&&!p()&&!x.isEval()&&(H-=M);var O=f({source:E,line:F,column:H});
+B.curPosition=O;x=q(x);var T=x.getFunctionName;x.getFunctionName=function(){return null==B.nextPosition?T():B.nextPosition.name||T()};x.getFileName=function(){return O.source};x.getLineNumber=function(){return O.line};x.getColumnNumber=function(){return O.column+1};x.getScriptNameOrSourceURL=function(){return O.source};return x}var Q=x.isEval()&&x.getEvalOrigin();Q&&(Q=c(Q),x=q(x),x.getEvalOrigin=function(){return Q});return x}function k(x,B){L&&(b={},h={});for(var E=(x.name||"Error")+": "+(x.message||
+""),F={nextPosition:null,curPosition:null},H=[],M=B.length-1;0<=M;M--)H.push("\n    at "+r(B[M],F)),F.nextPosition=F.curPosition;F.curPosition=F.nextPosition=null;return E+H.reverse().join("")}function u(x){var B=/\n    at [^(]+ \((.*):(\d+):(\d+)\)/.exec(x.stack);if(B){x=B[1];var E=+B[2];B=+B[3];var F=b[x];if(!F&&v&&v.existsSync(x))try{F=v.readFileSync(x,"utf8")}catch(H){F=""}if(F&&(F=F.split(/(?:\r\n|\r|\n)/)[E-1]))return x+":"+E+"\n"+F+"\n"+Array(B).join(" ")+"^"}return null}function d(){var x=
+e.emit;e.emit=function(B){if("uncaughtException"===B){var E=arguments[1]&&arguments[1].stack,F=0<this.listeners(B).length;if(E&&!F){E=arguments[1];F=u(E);var H="object"===typeof e&&null!==e?e.stderr:void 0;H&&H._handle&&H._handle.setBlocking&&H._handle.setBlocking(!0);F&&(console.error(),console.error(F));console.error(E.stack);"object"===typeof e&&null!==e&&"function"===typeof e.exit&&e.exit(1);return}}return x.apply(this,arguments)}}var g=C("source-map").SourceMapConsumer,n=C("path");try{var v=
+C("fs");v.existsSync&&v.readFileSync||(v=null)}catch(x){}var z=C("buffer-from"),G=!1,D=!1,L=!1,a="auto",b={},h={},w=/^data:application\/json[^,]+base64,/,y=[],I=[],K=t(y);y.push(function(x){x=x.trim();/^file:/.test(x)&&(x=x.replace(/file:\/\/\/(\w:)?/,function(F,H){return H?"":"/"}));if(x in b)return b[x];var B="";try{if(v)v.existsSync(x)&&(B=v.readFileSync(x,"utf8"));else{var E=new XMLHttpRequest;E.open("GET",x,!1);E.send(null);4===E.readyState&&200===E.status&&(B=E.responseText)}}catch(F){}return b[x]=
+B});var N=t(I);I.push(function(x){a:{if(p())try{var B=new XMLHttpRequest;B.open("GET",x,!1);B.send(null);var E=B.getResponseHeader("SourceMap")||B.getResponseHeader("X-SourceMap");if(E){var F=E;break a}}catch(M){}F=K(x);B=/(?:\/\/[@#][\s]*sourceMappingURL=([^\s'"]+)[\s]*$)|(?:\/\*[@#][\s]*sourceMappingURL=([^\s*'"]+)[\s]*(?:\*\/)[\s]*$)/mg;for(var H;E=B.exec(F);)H=E;F=H?H[1]:null}if(!F)return null;w.test(F)?(H=F.slice(F.indexOf(",")+1),H=z(H,"base64").toString(),F=x):(F=m(x,F),H=K(F));return H?{url:F,
+map:H}:null});var P=y.slice(0),W=I.slice(0);A.wrapCallSite=r;A.getErrorSource=u;A.mapSourcePosition=f;A.retrieveSourceMap=N;A.supportRelativeURL=m;A.install=function(x){x=x||{};if(x.environment&&(a=x.environment,-1===["node","browser","auto"].indexOf(a)))throw Error("environment "+a+" was unknown. Available options are {auto, browser, node}");x.retrieveFile&&(x.overrideRetrieveFile&&(y.length=0),y.unshift(x.retrieveFile));x.retrieveSourceMap&&(x.overrideRetrieveSourceMap&&(I.length=0),I.unshift(x.retrieveSourceMap));
+if(x.hookRequire&&!p()){var B=J.require("module"),E=B.prototype._compile;E.__sourceMapSupport||(B.prototype._compile=function(F,H){b[H]=F;h[H]=void 0;return E.call(this,F,H)},B.prototype._compile.__sourceMapSupport=!0)}L||(L="emptyCacheBetweenOperations"in x?x.emptyCacheBetweenOperations:!1);G||(G=!0,Error.prepareStackTrace=k);if(!D){x="handleUncaughtExceptions"in x?x.handleUncaughtExceptions:!0;try{!1===J.require("worker_threads").isMainThread&&(x=!1)}catch(F){}x&&"object"===typeof e&&null!==e&&
+"function"===typeof e.on&&(D=!0,d())}};A.resetRetrieveHandlers=function(){y.length=0;I.length=0;y=P.slice(0);I=W.slice(0);N=t(I);K=t(y)}}).call(this,C("g5I+bs"))},{"buffer-from":4,fs:3,"g5I+bs":9,path:8,"source-map":20}]},{},[1]);return R});
diff --git a/source-map-support.js b/source-map-support.js
index 2942b5e..fcb1e42 100644
--- a/source-map-support.js
+++ b/source-map-support.js
@@ -137,12 +137,14 @@ function supportRelativeURL(file, url) {
   var match = /^\w+:\/\/[^\/]*/.exec(dir);
   var protocol = match ? match[0] : '';
   var startPath = dir.slice(protocol.length);
+  var urlPath = url.startsWith(protocol) ? url.slice(protocol.length) : url;
+  var absolutePath = path.resolve(startPath, urlPath)
   if (protocol && /^\/\w\:/.test(startPath)) {
     // handle file:///C:/ paths
     protocol += '/';
-    return protocol + path.resolve(dir.slice(protocol.length), url).replace(/\\/g, '/');
+    return protocol + absolutePath.replace(/\\/g, '/');
   }
-  return protocol + path.resolve(dir.slice(protocol.length), url);
+  return protocol + absolutePath;
 }
 
 function retrieveSourceMapURL(source) {
@@ -524,6 +526,7 @@ exports.wrapCallSite = wrapCallSite;
 exports.getErrorSource = getErrorSource;
 exports.mapSourcePosition = mapSourcePosition;
 exports.retrieveSourceMap = retrieveSourceMap;
+exports.supportRelativeURL = supportRelativeURL;
 
 exports.install = function(options) {
   options = options || {};
diff --git a/test.js b/test.js
index ff7bd48..b35b397 100644
--- a/test.js
+++ b/test.js
@@ -1,4 +1,5 @@
-require('./source-map-support').install({
+var sourceMapSupport = require('./source-map-support');
+sourceMapSupport.install({
   emptyCacheBetweenOperations: true // Needed to be able to test for failure
 });
 
@@ -661,3 +662,11 @@ it('normal console.trace', function(done) {
     /^    at Object\.<anonymous> \((?:.*[/\\])?line2\.js:1002:102\)$/
   ]);
 });
+
+it('supports absolute source map urls', function() {
+  var sourceMapUrl = sourceMapSupport.supportRelativeURL(
+    'http://127.0.0.1:1336/chunk/chunk.js',
+    'http://127.0.0.1:1336/chunk/chunk.js.map',
+  );
+  assert.equal(sourceMapUrl, 'http://127.0.0.1:1336/chunk/chunk.js.map');
+});