base64 a base64url
/**
* Function that converts a base64 string into a base64url string
* @param {string} input - The string to convert
*/
function base64ToBase64url(input) {
// Replace non-url compatible chars with base64url standard chars and remove leading =
return input
.replace(/\+/g, '_')
.replace(/\//g, '-')
.replace(/=+$/g, '');
}
Jolly Jay