node_modules/html-to-image/es/util.js

export function resolveUrl(url, baseUrl) {
    // url is absolute already
    if (url.match(/^[a-z]+:\/\//i)) {
        return url;
    }
    // url is absolute already, without protocol
    if (url.match(/^\/\//)) {
        return window.location.protocol + url;
    }
    // dataURI, mailto:, tel:, etc.
    if (url.match(/^[a-z]+:/i)) {
        return url;
    }
    const doc = document.implementation.createHTMLDocument();
    const base = doc.createElement('base');
    const a = doc.createElement('a');
    doc.head.appendChild(base);
    doc.body.appendChild(a);
    if (baseUrl) {
        base.href = baseUrl;
    }
    a.href = url;
    return a.href;
}
export const uuid = (() => {
    // generate uuid for className of pseudo elements.
    // We should not use GUIDs, otherwise pseudo elements sometimes cannot be captured.
    let counter = 0;
    // ref: http://stackoverflow.com/a/6248722/2519373
    const random = () => 
    // eslint-disable-next-line no-bitwise
    `0000${((Math.random() * 36 ** 4) << 0).toString(36)}`.slice(-4);
    return () => {
        counter += 1;
        return `u${random()}${counter}`;
    };
})();
export function delay(ms) {
    return (args) => new Promise((resolve) => {
        setTimeout(() => resolve(args), ms);
    });
}
export function toArray(arrayLike) {
    const arr = [];
    for (let i = 0, l = arrayLike.length; i < l; i++) {
        arr.push(arrayLike[i]);
    }
    return arr;
}
function px(node, styleProperty) {
    const win = node.ownerDocument.defaultView || window;
    const val = win.getComputedStyle(node).getPropertyValue(styleProperty);
    return val ? parseFloat(val.replace('px', '')) : 0;
}
function getNodeWidth(node) {
    const leftBorder = px(node, 'border-left-width');
    const rightBorder = px(node, 'border-right-width');
    return node.clientWidth + leftBorder + rightBorder;
}
function getNodeHeight(node) {
    const topBorder = px(node, 'border-top-width');
    const bottomBorder = px(node, 'border-bottom-width');
    return node.clientHeight + topBorder + bottomBorder;
}
export function getImageSize(targetNode, options = {}) {
    const width = options.width || getNodeWidth(targetNode);
    const height = options.height || getNodeHeight(targetNode);
    return { width, height };
}
export function getPixelRatio() {
    let ratio;
    let FINAL_PROCESS;
    try {
        FINAL_PROCESS = process;
    }
    catch (e) {
        // pass
    }
    const val = FINAL_PROCESS && FINAL_PROCESS.env
        ? FINAL_PROCESS.env.devicePixelRatio
        : null;
    if (val) {
        ratio = parseInt(val, 10);
        if (Number.isNaN(ratio)) {
            ratio = 1;
        }
    }
    return ratio || window.devicePixelRatio || 1;
}
// @see https://developer.mozilla.org/en-US/docs/Web/HTML/Element/canvas#maximum_canvas_size
const canvasDimensionLimit = 16384;
export function checkCanvasDimensions(canvas) {
    if (canvas.width > canvasDimensionLimit ||
        canvas.height > canvasDimensionLimit) {
        if (canvas.width > canvasDimensionLimit &&
            canvas.height > canvasDimensionLimit) {
            if (canvas.width > canvas.height) {
                canvas.height *= canvasDimensionLimit / canvas.width;
                canvas.width = canvasDimensionLimit;
            }
            else {
                canvas.width *= canvasDimensionLimit / canvas.height;
                canvas.height = canvasDimensionLimit;
            }
        }
        else if (canvas.width > canvasDimensionLimit) {
            canvas.height *= canvasDimensionLimit / canvas.width;
            canvas.width = canvasDimensionLimit;
        }
        else {
            canvas.width *= canvasDimensionLimit / canvas.height;
            canvas.height = canvasDimensionLimit;
        }
    }
}
export function canvasToBlob(canvas, options = {}) {
    if (canvas.toBlob) {
        return new Promise((resolve) => {
            canvas.toBlob(resolve, options.type ? options.type : 'image/png', options.quality ? options.quality : 1);
        });
    }
    return new Promise((resolve) => {
        const binaryString = window.atob(canvas
            .toDataURL(options.type ? options.type : undefined, options.quality ? options.quality : undefined)
            .split(',')[1]);
        const len = binaryString.length;
        const binaryArray = new Uint8Array(len);
        for (let i = 0; i < len; i += 1) {
            binaryArray[i] = binaryString.charCodeAt(i);
        }
        resolve(new Blob([binaryArray], {
            type: options.type ? options.type : 'image/png',
        }));
    });
}
export function createImage(url) {
    return new Promise((resolve, reject) => {
        const img = new Image();
        img.decode = () => resolve(img);
        img.onload = () => resolve(img);
        img.onerror = reject;
        img.crossOrigin = 'anonymous';
        img.decoding = 'async';
        img.src = url;
    });
}
export async function svgToDataURL(svg) {
    return Promise.resolve()
        .then(() => new XMLSerializer().serializeToString(svg))
        .then(encodeURIComponent)
        .then((html) => `data:image/svg+xml;charset=utf-8,${html}`);
}
export async function nodeToDataURL(node, width, height) {
    const xmlns = 'http://www.w3.org/2000/svg';
    const svg = document.createElementNS(xmlns, 'svg');
    const foreignObject = document.createElementNS(xmlns, 'foreignObject');
    svg.setAttribute('width', `${width}`);
    svg.setAttribute('height', `${height}`);
    svg.setAttribute('viewBox', `0 0 ${width} ${height}`);
    foreignObject.setAttribute('width', '100%');
    foreignObject.setAttribute('height', '100%');
    foreignObject.setAttribute('x', '0');
    foreignObject.setAttribute('y', '0');
    foreignObject.setAttribute('externalResourcesRequired', 'true');
    svg.appendChild(foreignObject);
    foreignObject.appendChild(node);
    return svgToDataURL(svg);
}
export const isInstanceOfElement = (node, instance) => {
    if (node instanceof instance)
        return true;
    const nodePrototype = Object.getPrototypeOf(node);
    if (nodePrototype === null)
        return false;
    return (nodePrototype.constructor.name === instance.name ||
        isInstanceOfElement(nodePrototype, instance));
};
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