perftrace - npm Package Compare versions

Comparing version 1.0.1 to 1.1.0

index.js

@@ -35,2 +35,23 @@ const { PerformanceObserver, performance } = require('node:perf_hooks');
 
-module.exports = { TraceEvents };
+// Monkey patching require().
+// Refs: https://stackoverflow.com/a/42883538
+const Module = require('module');
+const originalRequire = Module.prototype.require;
+
+function trackRequires(shouldTrackRequires) {
+  if (shouldTrackRequires) {
+    Module.prototype.require = function () {
+      performance.mark(`require("${arguments[0]}")`);
+      const ret = originalRequire.apply(this, arguments);
+      performance.measure(`require("${arguments[0]}")`, `require("${arguments[0]}")`);
+      return ret;
+    };
+  } else {
+    Module.prototype.require = originalRequire;
+  }
+}
+
+module.exports = {
+  TraceEvents,
+  trackRequires,
+};

package.json

 {
   "name": "perftrace",
-  "version": "1.0.1",
+  "version": "1.1.0",
   "description": "Record PerformanceEntry objects from Node.js and the Web in the Trace Event Format, so that it can be visualized on https://ui.perfetto.dev.",
@@ -5,0 +5,0 @@ "repository": {

README.md

 # perftrace
 
-Record [`PerformanceEntry`](https://w3c.github.io/performance-timeline/#dom-performanceentry) objects from [Node.js](https://nodejs.org/api/perf_hooks.html) and the [Web](https://w3c.github.io/performance-timeline) in the [Trace Event Format](https://docs.google.com/document/d/1CvAClvFfyA5R-PhYUmn5OOQtYMH4h6I0nSsKchNAySU/preview), so that it can be visualized on [https://ui.perfetto.dev](https://ui.perfetto.dev).
+Record [`PerformanceEntry`](https://w3c.github.io/performance-timeline/#dom-performanceentry) objects from [Node.js](https://nodejs.org/api/perf_hooks.html) and the [Web](https://w3c.github.io/performance-timeline) in the [Trace Event Format](https://docs.google.com/document/d/1CvAClvFfyA5R-PhYUmn5OOQtYMH4h6I0nSsKchNAySU/preview), so that it can be visualized on <https://ui.perfetto.dev> like this!
 
-## Example in [`example.js`](example.js)
-
-A new `TraceEvents` object is created in:
-
-https://github.com/RaisinTen/perftrace/blob/18b4235b2b21d61a5aa167bf5e9c26cd5c6d90dc/example.js#L6
-
-Before the process exits, the `TraceEvents` object is destroyed and the trace events are stringified and printed to `events.json` in:
-
-https://github.com/RaisinTen/perftrace/blob/18b4235b2b21d61a5aa167bf5e9c26cd5c6d90dc/example.js#L8-L12
-
-The code that needs to be profiled can be done using the `peformance.measure()` and `peformance.mark()` APIs from [Node.js](https://nodejs.org/api/perf_hooks.html#performancemarkname-options) and the [Web](https://www.w3.org/TR/user-timing):
-
-```js
-peformance.mark("before");
-// code that needs to be profiled
-performance.measure("after", "before");
-```
-
-like it's being done in:
-
-https://github.com/RaisinTen/perftrace/blob/18b4235b2b21d61a5aa167bf5e9c26cd5c6d90dc/example.js#L14-L26
-
-After running `node example.js`, the generated `events.json` file can be opened on [https://ui.perfetto.dev](https://ui.perfetto.dev) for visualization:
-
-![](./example-perfetto.png)
+![](./docs/examples/tracing-requires/perfetto.png)

New alerts

Debug access

Supply chain risk

Uses debug, reflection and dynamic code execution features.

Found 1 instance in 1 package

Improved metrics

Lines of code

48

increased by65.52%

Worsened metrics

Total package byte prevSize

3548

decreased by-11.59%

Number of lines in readme file

6

decreased by-80%

Number of low supply chain risk alerts

1

increased byInfinity%

No dependency changes