[p5.js 2.0 Bug Report]: Using the 2.x minified build triggers errors instead of the Friendly Errors shown in the full p5.js library.

[perminder-17]

Most appropriate sub-area of p5.js?

• Accessibility
• Color
• Core/Environment/Rendering
• Data
• DOM
• Events
• Image
• IO
• Math
• Typography
• Utilities
• WebGL
• Build process
• Unit testing
• Internationalization
• Friendly errors
• Other (specify if possible)

p5.js version

2.x

Web browser and version

FireFox

Operating system

Linux

Steps to reproduce this

Steps:

1. Go to p5.js web-editor.
2. Switch the project to p5.js v2.x and select the minified build instead of the full library.
3. Create a sketch that would normally trigger a Friendly Error (FES) and Run the sketch.

Observed behaviour:

• The console shows: TypeError: e._friendlyError is not a function.
• Execution is blocked.

Expected Behavior

• No runtime error should be thrown.
• The Friendly Error System should suppress/block nothing and allow the sketch to continue running.

Snippet:

function setup() {
  createCanvas(100, 100, WEBGL);
  box(50);                 
  setAttributes('antialias', true); 
}

function draw() {
  background(255);
  rotateZ(frameCount * 0.02);
  rotateX(frameCount * 0.02);
  rotateY(frameCount * 0.02);
  fill(0);
  box(50);
}

Here's the sketch : https://editor.p5js.org/aman12345/sketches/HzJz4-R6t

[Iron-56]

Where did you turn on the minified build on the web editor?

[perminder-17]

Hi @Iron-56 , thanks for asking.

If you go to index.html file, you'll see the <script> tag, it's something like:
<script src="https://cdn.jsdelivr.net/npm/p5@2.0.5/lib/p5.min.js"></script>

Here, I have updated p5.js to p5.min.js, so we don't have any button at web-editor to switch to minified build, but we can manually change the script tag.

[Iron-56]

I just dug a bit deeper as I had a doubt if FES is even there for minified p5.js and it turns out it doesn't. Thanks you for opening this issue though!

[Iron-56]

Maybe you could make an issue to address this fact on the download's page or any relevant page

[perminder-17]

Hi @Iron-56 , I think it's written that

p5(p5.min.js) omits the FES

so, we don't have fes for minified build, but the issue here is that if we write a code which normally triggers fes in the p5.js build (not in minifed version build), the same code shows errors and stops the execution for the minified build. In 1.x versions, its like "no errors" and "no blockage in execution" , we wanted same behavior for 2.x versions as well.

just look at the sketch here. : https://editor.p5js.org/aman12345/sketches/HzJz4-R6t

After debugging, I found that the minified build is intentionally skipping the friendly_errors module to make the file smaller and the build process replaces the entire friendly_errors folder with noop.js, which does nothing in the minified version. So, for now, I'll create noop version of the friendly error functions for now inside noop.js file, which will fix the problems.

Also, there's still some work left for the API and usage part which @limzykenneth will be looking on, and the noop update is a temperory fix for now.

[perminder-17]

Closing this as completed by #8243