29 lines
698 B
TypeScript
29 lines
698 B
TypeScript
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export const transformFile2Base64 = (val: any): Promise<any> => {
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return new Promise((resolve, reject) => {
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const reader = new FileReader();
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reader.readAsDataURL(val);
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reader.onload = (): void => {
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resolve(reader.result);
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};
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reader.onerror = reject;
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});
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};
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export const transformBase64ToFile = (
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dataUrl: string,
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filename: string = 'file',
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) => {
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let arr = dataUrl.split(','),
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bstr = atob(arr[1]),
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n = bstr.length,
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u8arr = new Uint8Array(n);
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const mime = arr[0].match(/:(.*?);/);
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const mimeType = mime ? mime[1] : 'image/png';
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while (n--) {
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u8arr[n] = bstr.charCodeAt(n);
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}
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return new File([u8arr], filename, { type: mimeType });
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};
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