Converting base64 bit to a file. Used for images
add this function to tour ts file immediatly after imports function base64toBlob(base64Data, contentType) { contentType = contentType || ''; const sliceSize = 1024; const byteCharacters = atob(base64Data); const bytesLength = byteCharacters.length; const slicesCount = Math.ceil(bytesLength / sliceSize); const byteArrays = new Array(slicesCount); for (var sliceIndex = 0; sliceIndex < slicesCount; ++sliceIndex) { const begin = sliceIndex * sliceSize; const end = Math.min(begin + sliceSize, bytesLength); const bytes = new Array(end - begin); for (let offset = begin, i = 0; offset < end; ++i, ++offset) { bytes[i] = byteCharacters[offset].charCodeAt(0); } byteArrays[sliceIndex] = new Uint8Array(bytes); } return new Blob(byteArrays, { type: contentType }); } example: onImagePicked ( imageData : string | File ){ let imageFile ; if ( typeof imageData === 'string' ){ try { imageFile = ba