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ef748c576d
The polyfill returns an Image object instead of an ImageBitmap. The latter has a close method, however, which we call. Make sure we provide a dummy close method to avoid errors.
29 lines
887 B
JavaScript
29 lines
887 B
JavaScript
/*
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* Safari < 15 polyfill for createImageBitmap
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* https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/createImageBitmap
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*
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* Support source image types: Canvas.
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*/
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if (!('createImageBitmap' in window)) {
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window.createImageBitmap = async function(data) {
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return new Promise((resolve, reject) => {
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let dataURL;
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if (data instanceof HTMLCanvasElement) {
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dataURL = data.toDataURL();
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} else {
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reject(new Error('createImageBitmap does not handle the provided image source type'));
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}
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const img = document.createElement('img');
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// eslint-disable-next-line no-empty-function
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img.close = () => {};
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img.addEventListener('load', () => {
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resolve(img);
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});
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img.src = dataURL;
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});
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};
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}
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