A false positive FES error on function "loadModel"

[saprob]

I loaded a custom 3D object and am getting this message in the console.
p5.js says: Expected string at the second parameter in loadModel().

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[slash-init]

hi! @saprob
can i know what version of p5.js are you using?

[saprob]

Hi! I am sketching using the latest version, p5.js 2.3.2. Here is my code… https://editor.p5js.org/sapperlot/sketches/IShvOW8SR I'm also having trouble loading .stl files. It works fine with .obj files.

…

Am 15.09.2026 um 19:31 schrieb Gaurav ***@***.***>: slash-init left a comment (processing/p5.js#9176) <#9176 (comment)> hi! @saprob <https://github.com/saprob> can i know what version of p5.js are you using? — Reply to this email directly, view it on GitHub <#9176?email_source=notifications&email_token=AJYFULRUMQEKMDCLUPOYK2T5PF4HVA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTKNRYGQ4TKMJXHEY2M4TFMFZW63VHNVSW45DJN5XKKZLWMVXHJLDGN5XXIZLSL5RWY2LDNM#issuecomment-5684951791>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AJYFULWZLC3AJIU33FD7VXL5PF4HVAVCNFSNUABDKJSXA33TNF2G64TZHM4DIMRUGA2DAO2JONZXKZJ3GU2DMNJRHA4TSMRTUF3AE>. Triage notifications, keep track of coding agent tasks and review pull requests on the go with GitHub Mobile for iOS <https://github.com/notifications/mobile/ios/AJYFULVBF4EOTEPOE2V2NJD5PF4HVA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTKNRYGQ4TKMJXHEY2M4TFMFZW63VHNVSW45DJN5XKKZLWMVXHJKTGN5XXIZLSL5UW64Y> and Android <https://github.com/notifications/mobile/android/AJYFULWVICHNNFL444SHF5T5PF4HVA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTKNRYGQ4TKMJXHEY2M4TFMFZW63VHNVSW45DJN5XKKZLWMVXHJLTGN5XXIZLSL5QW4ZDSN5UWI>. Download it today! You are receiving this because you were mentioned.

[slash-init]

Hi!
I am sketching using the latest version, p5.js 2.3.2.

Here is my code…
https://editor.p5js.org/sapperlot/sketches/IShvOW8SR

I'm also having trouble loading .stl files. It works fine with .obj files.
…

The sketch link doesnt seem to work(returns 404). Could you check it?

[saprob]

shaderUbungModell by sapperlot -p5.js Web Editoreditor.p5js.orgVon meinem iPad gesendetAm 15.09.2026 um 21:03 schrieb Gaurav ***@***.***>:slash-init left a comment (processing/p5.js#9176) Hi! I am sketching using the latest version, p5.js 2.3.2. Here is my code… https://editor.p5js.org/sapperlot/sketches/IShvOW8SR I'm also having trouble loading .stl files. It works fine with .obj files. … The sketch link doesnt seem to work(returns 404). Could you check it? —Reply to this email directly, view it on GitHub, or unsubscribe.Triage notifications, keep track of coding agent tasks and review pull requests on the go with GitHub Mobile for iOS and Android. Download it today! You are receiving this because you were mentioned.Message ID: ***@***.***>

[saprob]

//scetch.jsp5.disableFriendlyErrors = true;let myShader;let modelTest;async function setup() {  createCanvas(400, 400, WEBGL);  myShader = await loadShader('shader.vert', 'shader.frag');    modelTest = await loadModel("modellTest.obj", true);    //drawingContext.disable(drawingContext.DEPTH_TEST);}function draw() {  background(220);  orbitControl();  shader(myShader);  myShader.setUniform('uFarbe', [1.0, 0.0, 0.0, 1.0]);  myShader.setUniform('uTime', frameCount * 0.05);  noStroke();  //normalMaterial();  //stroke(255, 255, 0);  model(modelTest);}//shader.vert#version 300 esin vec3 aPosition;in vec2 aTexCoord;in vec3 aNormal;uniform mat4 uModelViewMatrix;uniform mat4 uProjectionMatrix;uniform mat3 uNormalMatrix;//uniform float uTime;out vec3 vNormal;out vec2 vTexCoord;void main() {  vec3 position = aPosition;  //Animation  //position.y += sin(position.x * 0.05 + uTime) * 15.0;  //Verformung     // float verformung = sin(position.x * 0.08) * cos(position.z * 0.08) * 12.0;        //position.y += verformung;                //Bläht Modell      //position += aNormal * 10.0;        //Twist verdreht das Modell      float winkel = position.x * 0.005;        // Rotationsmatrix auf die X- und Z-Achse anwenden (Drehung um die Y-Achse)      float cosWinkel = cos(winkel);      float sinWinkel = sin(winkel);  // Neue X- und Z-Positionen berechnen      float rotX = position.y * cosWinkel - position.z * sinWinkel;      float rotZ = position.y * sinWinkel + position.z * cosWinkel;  // Transformierte Koordinaten zuweisen      position.y = rotX;      position.z = rotZ;      vTexCoord = aTexCoord;  vNormal = uNormalMatrix * aNormal;  gl_Position = uProjectionMatrix * uModelViewMatrix * vec4(position, 1.0);}//shader.frag#version 300 esprecision mediump float;in vec2 vTexCoord;in vec3 vNormal;uniform vec4 uFarbe;out vec4 myColor;void main() {  vec3 normal = normalize(vNormal);    float helligkeit = normal.z * 0.5 + 0.5;  vec4 farbe = uFarbe * helligkeit;    myColor = vec4(farbe.rgb * farbe.a, farbe.a);}Von meinem iPad gesendetAm 15.09.2026 um 21:08 schrieb ***@***.***:shaderUbungModell by sapperlot -p5.js Web Editoreditor.p5js.org<favicon.ico>Von meinem iPad gesendetAm 15.09.2026 um 21:03 schrieb Gaurav ***@***.***>:slash-init left a comment (processing/p5.js#9176) Hi! I am sketching using the latest version, p5.js 2.3.2. Here is my code… https://editor.p5js.org/sapperlot/sketches/IShvOW8SR I'm also having trouble loading .stl files. It works fine with .obj files. … The sketch link doesnt seem to work(returns 404). Could you check it? —Reply to this email directly, view it on GitHub, or unsubscribe.Triage notifications, keep track of coding agent tasks and review pull requests on the go with GitHub Mobile for iOS and Android. Download it today! You are receiving this because you were mentioned.Message ID: ***@***.***>

[davepagurek]

After talking on Discord, the sketch was doing what the second example in the loadModel docs does, passing true as a second parameter, e.g.:

// Click and drag the mouse to view the scene from different angles.

let shape;

// Load the file and create a p5.Geometry object.
// Normalize the geometry's size to fit the canvas.
async function setup() {
  shape = await loadModel('/assets/teapot.obj', true);

  createCanvas(100, 100, WEBGL);

  describe('A white teapot drawn against a gray background.');
}

function draw() {
  background(200);

  // Enable orbiting with the mouse.
  orbitControl();

  // Draw the shape.
  model(shape);
}

Looking at the docs page, you'll notice that in the Syntax section at the bottom, it doesn't actually mention that overload, even though the examples show it and normalize is referenced below! FES and the docs use the same source, the jsdoc in the source code. We likely need to add this overload to the jsdoc to fix both.

[SH20RAJ]

Hi @davepagurek! I would love to work on this issue. As you noted, the FES false positive warning is due to the missing boolean normalize overload in the JSDoc definition for loadModel in src/webgl/loading.js. I can add the missing overload annotations so both FES and the documentation reflect this signature properly, and verify with tests. Could you please assign this to me?