image-js/lib/load/readImg.js

Image processing and manipulation in JavaScript

import { assert } from '../utils/validators/assert.js';
import { readCanvas } from './readCanvas.js';
// TODO: Create nodejs version that throws an error
/**
 * Read an image from an HTML image source.
 * @param img - Image source such as an <img> or <svg> element.
 * @returns The read image.
 */
export function readImg(img) {
    const canvas = document.createElement('canvas');
    canvas.width = img.width;
    canvas.height = img.height;
    const ctx = canvas.getContext('2d');
    assert(ctx);
    ctx.drawImage(img, 0, 0);
    return readCanvas(canvas);
}
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