I'm getting an error that ChatGPT definitely thinks is coming from the code optimizer of Qwik.js, and if that's the case there's unfortunately nothing I can do to debug the issue.
const drawImageTask = useVisibleTask$(() => {
const canvas = canvasSignal.value;
if (canvas) {
const ctx = canvas.getContext('2d');
const img = new Image();
img.src = mapProps.imageUrl;
img.onload = async () => {
const canvasSize = calculateCanvasSize(img); // < ------------------------- causes error
function calculateCanvasSize(image: HTMLImageElement) {
const aspectRatio = image.width / image.height;
const canvasWidth = window.innerWidth;
const canvasHeight = canvasWidth / aspectRatio;
return [canvasWidth, canvasHeight];
}
12:02:14 AM [vite] Internal server error: Cannot read properties of null (reading '0') Plugin: vite-plugin-qwik File: G:/projects/websites/LoreCoords/Qwik Basic Template/src/components/map/map.tsx at createRollupError2 (G:\projects\websites\LoreCoords\Qwik Basic Template\[email protected]\qwik\optimizer.cjs:1624:38) at G:\projects\websites\LoreCoords\Qwik Basic Template\[email protected]\qwik\optimizer.cjs:2166:49 at Array.forEach () at G:\projects\websites\LoreCoords\Qwik Basic Template\[email protected]\qwik\optimizer.cjs:2164:23 at Object.transform (G:\projects\websites\LoreCoords\Qwik Basic Template\[email protected]\qwik\optimizer.cjs:1314:9) at TransformContext.transform (G:\projects\websites\LoreCoords\Qwik Basic Template\[email protected]\qwik\optimizer.cjs:2204:27) at Object.transform (file:///G:/projects/websites/LoreCoords/Qwik%20Basic%20Template/node_modules/vite/dist/node/chunks/dep-79892de8.js:43387:44) at async loadAndTransform (file:///G:/projects/websites/LoreCoords/Qwik%20Basic%20Template/node_modules/vite/dist/node/chunks/dep-79892de8.js:41105:29)
the issue was down to the fact that these methods were part of a component. The function definition was incorrect for calculateCanvasSize. Instead it should have been:
const calculateCanvasSize = $((image: HTMLImageElement) => {
console.log(image.width + "= width" + image.height + "= image.height");
const aspectRatio = image.width / image.height;
const canvasWidth = window.innerWidth;
const canvasHeight = canvasWidth / aspectRatio;
return [canvasWidth, canvasHeight];
});