@mornya/react-image-libs/esm/utils.js

The project of React.js Image library.

export function getImageSize(url, option) {
    return new Promise(function (resolve, reject) {
        var _a;
        var image = new Image();
        var imageLoadHandler = function () {
            return resolve({
                url: url,
                width: image.naturalWidth,
                height: image.naturalHeight,
                isComplete: image.complete,
            });
        };
        var imageErrorHandler = function (error) {
            if (option === null || option === void 0 ? void 0 : option.isIgnoreError) {
                resolve({
                    url: url,
                    width: 0,
                    height: 0,
                    isComplete: false,
                });
            }
            else {
                reject(error);
            }
        };
        image.src = url;
        image.crossOrigin = 'anonymous';
        image.addEventListener('load', imageLoadHandler, { once: true });
        image.addEventListener('error', imageErrorHandler, { once: true });
        setTimeout(function () {
            if (!image.complete) {
                if (option === null || option === void 0 ? void 0 : option.isIgnoreError) {
                    resolve({
                        url: url,
                        width: 0,
                        height: 0,
                        isComplete: false,
                    });
                }
                else {
                    reject(new Error('Cannot load image by timeout!'));
                }
            }
        }, (_a = option === null || option === void 0 ? void 0 : option.timeout) !== null && _a !== void 0 ? _a : 2000);
    });
}
export function getImageFileToData(file) {
    return new Promise(function (resolve, reject) {
        var fileReader = new FileReader();
        fileReader.addEventListener('loadend', function (e) {
            var _a;
            if ((_a = e.target) === null || _a === void 0 ? void 0 : _a.error) {
                console.error(e.target.error);
                reject(new Error(e.target.error.name));
            }
            else {
                resolve(String(fileReader.result));
            }
        }, false);
        fileReader.readAsDataURL(file);
    });
}