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node_modules/source-map-support/source-map-support.js

@@ -12,6 +12,8 @@ try {
   /* nop */
 }
 
+var bufferFrom = require('buffer-from');
+
 // Only install once if called multiple times
 var errorFormatterInstalled = false;
 var uncaughtShimInstalled = false;
@@ -64,39 +66,52 @@ var retrieveFile = handlerExec(retrieveFileHandlers);
 retrieveFileHandlers.push(function(path) {
   // Trim the path to make sure there is no extra whitespace.
   path = path.trim();
+  if (/^file:/.test(path)) {
+    // existsSync/readFileSync can't handle file protocol, but once stripped, it works
+    path = path.replace(/file:\/\/\/(\w:)?/, function(protocol, drive) {
+      return drive ?
+        '' : // file:///C:/dir/file -> C:/dir/file
+        '/'; // file:///root-dir/file -> /root-dir/file
+    });
+  }
   if (path in fileContentsCache) {
     return fileContentsCache[path];
   }
 
-  var contents = null;
-  if (!fs) {
-    // Use SJAX if we are in the browser
-    var xhr = new XMLHttpRequest();
-    xhr.open('GET', path, false);
-    xhr.send(null);
-    var contents = null
-    if (xhr.readyState === 4 && xhr.status === 200) {
-      contents = xhr.responseText
-    }
-  } else if (fs.existsSync(path)) {
-    // Otherwise, use the filesystem
-    try {
+  var contents = '';
+  try {
+    if (!fs) {
+      // Use SJAX if we are in the browser
+      var xhr = new XMLHttpRequest();
+      xhr.open('GET', path, /** async */ false);
+      xhr.send(null);
+      if (xhr.readyState === 4 && xhr.status === 200) {
+        contents = xhr.responseText;
+      }
+    } else if (fs.existsSync(path)) {
+      // Otherwise, use the filesystem
       contents = fs.readFileSync(path, 'utf8');
-    } catch (er) {
-      contents = '';
     }
+  } catch (er) {
+    /* ignore any errors */
   }
 
   return fileContentsCache[path] = contents;
 });
 
 // Support URLs relative to a directory, but be careful about a protocol prefix
-// in case we are in the browser (i.e. directories may start with "http://")
+// in case we are in the browser (i.e. directories may start with "http://" or "file:///")
 function supportRelativeURL(file, url) {
   if (!file) return url;
   var dir = path.dirname(file);
   var match = /^\w+:\/\/[^\/]*/.exec(dir);
   var protocol = match ? match[0] : '';
+  var startPath = dir.slice(protocol.length);
+  if (protocol && /^\/\w\:/.test(startPath)) {
+    // handle file:///C:/ paths
+    protocol += '/';
+    return protocol + path.resolve(dir.slice(protocol.length), url).replace(/\\/g, '/');
+  }
   return protocol + path.resolve(dir.slice(protocol.length), url);
 }
 
@@ -146,7 +161,7 @@ retrieveMapHandlers.push(function(source) {
   if (reSourceMap.test(sourceMappingURL)) {
     // Support source map URL as a data url
     var rawData = sourceMappingURL.slice(sourceMappingURL.indexOf(',') + 1);
-    sourceMapData = new Buffer(rawData, "base64").toString();
+    sourceMapData = bufferFrom(rawData, "base64").toString();
     sourceMappingURL = source;
   } else {
     // Support source map URLs relative to the source URL
@@ -195,7 +210,7 @@ function mapSourcePosition(position) {
   }
 
   // Resolve the source URL relative to the URL of the source map
-  if (sourceMap && sourceMap.map) {
+  if (sourceMap && sourceMap.map && typeof sourceMap.map.originalPositionFor === 'function') {
     var originalPosition = sourceMap.map.originalPositionFor(position);
 
     // Only return the original position if a matching line was found. If no
@@ -346,6 +361,8 @@ function wrapCallSite(frame) {
       column: column
     });
     frame = cloneCallSite(frame);
+    var originalFunctionName = frame.getFunctionName;
+    frame.getFunctionName = function() { return position.name || originalFunctionName(); };
     frame.getFileName = function() { return position.source; };
     frame.getLineNumber = function() { return position.line; };
     frame.getColumnNumber = function() { return position.column + 1; };
@@ -414,6 +431,11 @@ function getErrorSource(error) {
 function printErrorAndExit (error) {
   var source = getErrorSource(error);
 
+  // Ensure error is printed synchronously and not truncated
+  if (process.stderr._handle && process.stderr._handle.setBlocking) {
+    process.stderr._handle.setBlocking(true);
+  }
+
   if (source) {
     console.error();
     console.error(source);
@@ -440,6 +462,9 @@ function shimEmitUncaughtException () {
   };
 }
 
+var originalRetrieveFileHandlers = retrieveFileHandlers.slice(0);
+var originalRetrieveMapHandlers = retrieveMapHandlers.slice(0);
+
 exports.wrapCallSite = wrapCallSite;
 exports.getErrorSource = getErrorSource;
 exports.mapSourcePosition = mapSourcePosition;
@@ -525,3 +550,11 @@ exports.install = function(options) {
     }
   }
 };
+
+exports.resetRetrieveHandlers = function() {
+  retrieveFileHandlers.length = 0;
+  retrieveMapHandlers.length = 0;
+
+  retrieveFileHandlers = originalRetrieveFileHandlers.slice(0);
+  retrieveMapHandlers = originalRetrieveMapHandlers.slice(0);
+}