Parsing and testing stack traces from IE, FF, Chrome, Safari

.gitignore

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+node_modules

Gruntfile.js

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+module.exports = function(grunt) {
+  var pkg = require('./package.json');
+
+  grunt.initConfig({
+    shell: { // grunt-shell-spawn
+      options: {
+        stdout: true,
+        stderr: true
+      },
+      mocha: {
+        command: './node_modules/.bin/mocha --reporter spec test/**/*.js',
+      }
+    }
+  });
+
+
+  grunt.loadNpmTasks('grunt-shell-spawn');
+
+  grunt.registerTask('test', ['shell:mocha']);
+};

index.js

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+module.exports = require('./lib/stacktrace-parser.js');

lib/stacktrace-parser.js

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+
+
+var UNKNOWN_FUNCTION = '<unknown>';
+
+var StackTraceParser = {
+  /**
+   * This parses the different stack traces and puts them into one format
+   * This borrows heavily from TraceKit (https://github.com/occ/TraceKit)
+   */
+  parse: function(stackString) {
+    var chrome = /^\s*at (?:(?:(?:Anonymous function)?|((?:\[object object\])?\S+(?: \[as \S+\])?)) )?\(?((?:file|http|https):.*?):(\d+)(?::(\d+))?\)?\s*$/i,
+        gecko = /^(?:\s*(\S*)(?:\((.*?)\))?@)?((?:file|http|https).*?):(\d+)(?::(\d+))?\s*$/i,
+        lines = stackString.split('\n'),
+        stack = [],
+        parts,
+        element;
+
+    for (var i = 0, j = lines.length; i < j; ++i) {
+        if ((parts = gecko.exec(lines[i]))) {
+            element = {
+                'file': parts[3],
+                'methodName': parts[1] || UNKNOWN_FUNCTION,
+                'lineNumber': +parts[4],
+                'column': parts[5] ? +parts[5] : null
+            };
+        } else if ((parts = chrome.exec(lines[i]))) {
+            element = {
+                'file': parts[2],
+                'methodName': parts[1] || UNKNOWN_FUNCTION,
+                'lineNumber': +parts[3],
+                'column': parts[4] ? +parts[4] : null
+            };
+        } else {
+            continue;
+        }
+
+        stack.push(element);
+    }
+
+    return stack;
+  }
+};
+
+
+module.exports = StackTraceParser;

package.json

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+{
+  "author": "Georg Tavonius <g.tavonius@gmail.com> (http://jaz-lounge.com)",
+  "name": "stacktrace-parser",
+  "description": "Parses every stack trace into a nicely formatted array of hashes.",
+  "version": "0.1.0",
+  "engines": {
+    "node": "~0.10"
+  },
+  "dependencies": {},
+  "devDependencies": {
+    "mocha": "*",
+    "should": "*",
+    "expect.js": "*",
+    "grunt-cli": "~0.1.13",
+    "grunt": "~0.4.2",
+    "grunt-shell-spawn": "~0.3.0"
+  },
+  "main": "index.js",
+  "scripts": {
+    "test": "make test"
+  }
+}

test/stacktrace_parser_test.js

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+var expect = require('expect.js'),
+
+    StackTraceParser = require('../lib/stacktrace-parser');
+
+describe('StackTraceParser', function() {
+  var data = {
+    'Chrome & Chrome Mobile & Opera': [
+      {
+        from: "Error: with timeout\n    at http://errwischt.com/stack_traces/test:76:15\n    at wrapped (http://errwischt.com/bandage.js:51:25)",
+        to: [
+          { file: 'http://errwischt.com/stack_traces/test',
+            methodName: '<unknown>',
+            lineNumber: 76,
+            column: 15 },
+          { file: 'http://errwischt.com/bandage.js',
+            methodName: 'wrapped',
+            lineNumber: 51,
+            column: 25 }
+        ]
+      },
+      {
+        from: "Error: with timeout and named func\n    at timeoutWithName (http://errwischt.com/stack_traces/test:83:15)\n    at wrapped (http://errwischt.com/bandage.js:51:25)",
+        to: [
+          { file: 'http://errwischt.com/stack_traces/test',
+            methodName: 'timeoutWithName',
+            lineNumber: 83,
+            column: 15 },
+          { file: 'http://errwischt.com/bandage.js',
+            methodName: 'wrapped',
+            lineNumber: 51,
+            column: 25 }
+        ]
+      },
+      {
+        from: "TypeError: Object # has no method 'objectBreakDown'\n    at HTMLDocument. (http://errwischt.com/stack_traces/test:91:19)\n    at l (http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js:4:24882)\n    at Object.c.fireWith [as resolveWith] (http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js:4:25702)\n    at Function.x.extend.ready (http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js:4:2900)\n    at HTMLDocument.S (http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js:4:553)",
+        to: [
+          { file: 'http://errwischt.com/stack_traces/test',
+            methodName: 'HTMLDocument.',
+            lineNumber: 91,
+            column: 19 },
+          { file: 'http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js',
+            methodName: 'l',
+            lineNumber: 4,
+            column: 24882 },
+          { file: 'http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js',
+            methodName: 'Object.c.fireWith [as resolveWith]',
+            lineNumber: 4,
+            column: 25702 },
+          { file: 'http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js',
+            methodName: 'Function.x.extend.ready',
+            lineNumber: 4,
+            column: 2900 },
+          { file: 'http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js',
+            methodName: 'HTMLDocument.S',
+            lineNumber: 4,
+            column: 553 }
+        ]
+      }
+    ],
+    'Firefox': [
+      {
+        from: "timeoutWithName@http://errwischt.com/stack_traces/test:83\nwrapped@http://errwischt.com/bandage.js:51",
+        to: [
+          { file: 'http://errwischt.com/stack_traces/test',
+            methodName: 'timeoutWithName',
+            lineNumber: 83,
+            column: null },
+          { file: 'http://errwischt.com/bandage.js',
+            methodName: 'wrapped',
+            lineNumber: 51,
+            column: null }
+        ]
+      },
+      {
+        from: "@http://errwischt.com/stack_traces/test:76\nwrapped@http://errwischt.com/bandage.js:51",
+        to: [
+          { file: 'http://errwischt.com/stack_traces/test',
+            methodName: '<unknown>',
+            lineNumber: 76,
+            column: null },
+          { file: 'http://errwischt.com/bandage.js',
+            methodName: 'wrapped',
+            lineNumber: 51,
+            column: null }
+        ]
+      },
+      {
+        from: "@http://errwischt.com/stack_traces/test:97\nx.Callbacks/l@http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js:4\nx.Callbacks/c.fireWith@http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js:4\n.ready@http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js:4\nS@http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js:4",
+        to: [
+          { file: 'http://errwischt.com/stack_traces/test',
+            methodName: '<unknown>',
+            lineNumber: 97,
+            column: null },
+          { file: 'http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js',
+            methodName: 'x.Callbacks/l',
+            lineNumber: 4,
+            column: null },
+          { file: 'http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js',
+            methodName: 'x.Callbacks/c.fireWith',
+            lineNumber: 4,
+            column: null },
+          { file: 'http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js',
+            methodName: '.ready',
+            lineNumber: 4,
+            column: null },
+          { file: 'http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js',
+            methodName: 'S',
+            lineNumber: 4,
+            column: null }
+        ]
+      }
+    ],
+    'Safari': [
+      {
+        from: "timeoutWithName@http://bandage.local:8181/stack_traces/test:83:55\nwrapped@http://bandage.local:8181/bandage.js:51:30",
+        to: [ { file: 'http://bandage.local:8181/stack_traces/test',
+            methodName: 'timeoutWithName',
+            lineNumber: 83,
+            column: 55 },
+          { file: 'http://bandage.local:8181/bandage.js',
+            methodName: 'wrapped',
+            lineNumber: 51,
+            column: 30 } ]
+      },
+      {
+        from: "http://bandage.local:8181/stack_traces/test:76:40\nwrapped@http://bandage.local:8181/bandage.js:51:30",
+        to: [ { file: 'http://bandage.local:8181/stack_traces/test',
+            methodName: '<unknown>',
+            lineNumber: 76,
+            column: 40 },
+          { file: 'http://bandage.local:8181/bandage.js',
+            methodName: 'wrapped',
+            lineNumber: 51,
+            column: 30 } ]
+      },
+      {
+        from: "http://bandage.local:8181/stack_traces/test:97:28\nl@http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js:4:24909\nfireWith@http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js:4:50440\nready@http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js:4:2933\nS@http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js:4:580",
+        to: [ { file: 'http://bandage.local:8181/stack_traces/test',
+            methodName: '<unknown>',
+            lineNumber: 97,
+            column: 28 },
+          { file: 'http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js',
+            methodName: 'l',
+            lineNumber: 4,
+            column: 24909 },
+          { file: 'http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js',
+            methodName: 'fireWith',
+            lineNumber: 4,
+            column: 50440 },
+          { file: 'http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js',
+            methodName: 'ready',
+            lineNumber: 4,
+            column: 2933 },
+          { file: 'http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js',
+            methodName: 'S',
+            lineNumber: 4,
+            column: 580 } ]
+      }
+    ],
+    'Internet Explorer': [
+      {
+        from: "Error: with timeout and named func\n   at timeoutWithName (http://bandage.jaz-lounge.com/stack_traces/test:83:9)\n   at wrapped (http://bandage.jaz-lounge.com/bandage.js:51:13)",
+        to: [ { file: 'http://bandage.jaz-lounge.com/stack_traces/test',
+            methodName: 'timeoutWithName',
+            lineNumber: 83,
+            column: 9 },
+          { file: 'http://bandage.jaz-lounge.com/bandage.js',
+            methodName: 'wrapped',
+            lineNumber: 51,
+            column: 13 } ]
+      },
+      {
+        from: "Error: with timeout\n   at Anonymous function (http://bandage.jaz-lounge.com/stack_traces/test:76:9)\n   at wrapped (http://bandage.jaz-lounge.com/bandage.js:51:13)",
+        to: [ { file: 'http://bandage.jaz-lounge.com/stack_traces/test',
+            methodName: '<unknown>',
+            lineNumber: 76,
+            column: 9 },
+          { file: 'http://bandage.jaz-lounge.com/bandage.js',
+            methodName: 'wrapped',
+            lineNumber: 51,
+            column: 13 } ]
+      },
+      {
+        from: "TypeError: Object doesn't support property or method 'objectBreakDown'\n   at Anonymous function (http://bandage.jaz-lounge.com/stack_traces/test:91:7)\n   at l (http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js:4:24874)\n   at fireWith (http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js:4:25638)\n   at ready (http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js:4:2898)\n   at S (http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js:4:551)",
+        to: [ { file: 'http://bandage.jaz-lounge.com/stack_traces/test',
+            methodName: '<unknown>',
+            lineNumber: 91,
+            column: 7 },
+          { file: 'http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js',
+            methodName: 'l',
+            lineNumber: 4,
+            column: 24874 },
+          { file: 'http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js',
+            methodName: 'fireWith',
+            lineNumber: 4,
+            column: 25638 },
+          { file: 'http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js',
+            methodName: 'ready',
+            lineNumber: 4,
+            column: 2898 },
+          { file: 'http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js',
+            methodName: 'S',
+            lineNumber: 4,
+            column: 551 } ]
+      }
+    ]
+  };
+
+  Object.keys(data).forEach(function(browser) {
+    describe('can parse stack trace of ' + browser, function() {
+      data[browser].forEach(function(browserData) {
+        it(browserData.from, function() {
+          var result = StackTraceParser.parse(browserData.from);
+          expect(result.length).to.equal(browserData.to.length);
+          expect(result).to.eql(browserData.to);
+        });
+      });
+    });
+  });
+});