GitHub migration

1 files changed, 38 insertions, 0 deletions

diff --git a/updater/sql/mac/lib/trace.js b/updater/sql/mac/lib/trace.js
new file mode 100755
index 0000000..1d84cb0
--- /dev/null
+++ b/updater/sql/mac/lib/trace.js
@@ -0,0 +1,38 @@
+// Inspired by https://github.com/tlrobinson/long-stack-traces
+const util = require('util');
+
+function extendTrace(object, property, pos) {
+    const old = object[property];
+    object[property] = function() {
+        const error = new Error();
+        const name = object.constructor.name + '#' + property + '(' +
+            Array.prototype.slice.call(arguments).map(function(el) {
+                return util.inspect(el, false, 0);
+            }).join(', ') + ')';
+
+        if (typeof pos === 'undefined') pos = -1;
+        if (pos < 0) pos += arguments.length;
+        const cb = arguments[pos];
+        if (typeof arguments[pos] === 'function') {
+            arguments[pos] = function replacement() {
+                const err = arguments[0];
+                if (err && err.stack && !err.__augmented) {
+                    err.stack = filter(err).join('\n');
+                    err.stack += '\n--> in ' + name;
+                    err.stack += '\n' + filter(error).slice(1).join('\n');
+                    err.__augmented = true;
+                }
+                return cb.apply(this, arguments);
+            };
+        }
+        return old.apply(this, arguments);
+    };
+}
+exports.extendTrace = extendTrace;
+
+
+function filter(error) {
+    return error.stack.split('\n').filter(function(line) {
+        return line.indexOf(__filename) < 0;
+    });
+}