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9c5ed0dcca
Adds input validation and safe property access to utility functions to handle edge cases and invalid arguments gracefully
23 lines
626 B
JavaScript
23 lines
626 B
JavaScript
import { blob } from './fetch.mjs';
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// preload an image
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// the goal is to get it in the browser's cache so it is available more quickly when the browser needs it
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// a list of cached icons is used to avoid hitting the cache multiple times
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const cachedImages = [];
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const preloadImg = (src) => {
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if (!src || typeof src !== 'string') {
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console.warn(`preloadImg expects a URL string, received: '${src}' (${typeof src})`);
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return false;
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}
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if (cachedImages.includes(src)) return false;
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blob(src);
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cachedImages.push(src);
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return true;
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};
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export {
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// eslint-disable-next-line import/prefer-default-export
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preloadImg,
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};
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