Re-construct the JS Timeline page

2014-12-22 14:07:16 +01:00
parent c1257afc4c
commit cb20075599
19 changed files with 890 additions and 570 deletions
@@ -0,0 +1,62 @@
+var debug = require('debug')('ylt:jsExecutionTransformer');
+
+var jsExecutionTransformer = function() {
+
+    this.transform = function(data) {
+        var javascriptExecutionTree = {};
+
+        debug('Starting JS execution transformation');
+
+        try {
+            javascriptExecutionTree = JSON.parse(data.toolsResults.phantomas.offenders.javascriptExecutionTree[0]);
+        
+            if (javascriptExecutionTree.children) {
+                javascriptExecutionTree.children.forEach(function(node) {
+                    
+                    // Mark abnormal things with a warning flag
+                    var contextLenght = (node.data.callDetails && node.data.callDetails.context) ? node.data.callDetails.context.length : null;
+                    if ((node.data.type === 'jQuery - bind' && contextLenght > 5) ||
+                            node.data.resultsNumber === 0 ||
+                            contextLenght === 0) {
+                        node.warning = true;
+                    }
+
+                    // Mark errors with an error flag
+                    if (node.data.type === 'error' || node.data.type === 'jQuery version change') {
+                        node.error = true;
+                    }
+
+                    // Mark a performance flag
+                    if (['domInteractive', 'domContentLoaded', 'domContentLoadedEnd', 'domComplete'].indexOf(node.data.type) >= 0) {
+                        node.windowPerformance = true;
+                    }
+
+                    // Read the execution tree and adjust the navigation timings (cause their not very well synchronised)
+                    switch(node.data.type) {
+                        case 'domInteractive':
+                            data.toolsResults.phantomas.metrics.domInteractive = node.data.timestamp;
+                            break;
+                        case 'domContentLoaded':
+                            data.toolsResults.phantomas.metrics.domContentLoaded = node.data.timestamp;
+                            break;
+                        case 'domContentLoadedEnd':
+                            data.toolsResults.phantomas.metrics.domContentLoadedEnd = node.data.timestamp;
+                            break;
+                        case 'domComplete':
+                            data.toolsResults.phantomas.metrics.domComplete = node.data.timestamp;
+                            break;
+                    }
+                });
+            }
+
+            debug('JS execution transformation complete');
+
+        } catch(err) {
+            throw err;
+        }
+
+        return javascriptExecutionTree;
+    };
+};
+
+module.exports = new jsExecutionTransformer();