43 lines
1.2 KiB
JavaScript
43 lines
1.2 KiB
JavaScript
export function downloadBlob(blob, fileName) {
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if (window.navigator && window.navigator.msSaveOrOpenBlob) {
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window.navigator.msSaveOrOpenBlob(blob, fileName);
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} else {
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const link = document.createElement('a');
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link.href = window.URL.createObjectURL(blob);
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link.setAttribute('download', fileName);
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document.body.appendChild(link);
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link.click();
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}
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}
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/**
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* Format bytes as human-readable text.
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*
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* @param bytes Number of bytes.
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* @param si True to use metric (SI) units, aka powers of 1000. False to use
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* binary (IEC), aka powers of 1024.
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* @param dp Number of decimal places to display.
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*
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* @return Formatted string.
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*/
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export function humanFileSize(bytes, si = false, dp = 1) {
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const thresh = si ? 1000 : 1024;
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if (Math.abs(bytes) < thresh) {
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return bytes + ' B';
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}
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const units = si
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? ['kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']
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: ['KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB'];
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let u = -1;
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const r = 10 ** dp;
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do {
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bytes /= thresh;
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++u;
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} while (Math.round(Math.abs(bytes) * r) / r >= thresh && u < units.length - 1);
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return bytes.toFixed(dp) + ' ' + units[u];
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}
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