box-ui-elements-mlh/es/utils/base64.js.flow

Box UI Elements

/**
 * @flow
 * @file Function to convert Int32Array to Base64 for SHA1 digest
 * @author Box
 */

/**
 * Converts hex to Base 64. Adapted from
 * https://stackoverflow.com/questions/23190056/hex-to-base64-converter-for-javascript.
 *
 * @param {string} str - Hex string to convert
 * @return {string}
 */
export default function hexToBase64(str: string): string {
    return btoa(
        String.fromCharCode.apply(
            null,
            str
                .replace(/\r|\n/g, '')
                .replace(/([\da-fA-F]{2}) ?/g, '0x$1 ')
                .replace(/ +$/, '')
                .split(' '),
        ),
    );
}