18 lines
579 B
JavaScript
18 lines
579 B
JavaScript
/* -*- Mode: js; js-indent-level: 2; -*- */
|
|
/*
|
|
* Copyright 2011 Mozilla Foundation and contributors
|
|
* Licensed under the New BSD license. See LICENSE or:
|
|
* http://opensource.org/licenses/BSD-3-Clause
|
|
*/
|
|
|
|
const intToCharMap = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".split("");
|
|
|
|
/**
|
|
* Encode an integer in the range of 0 to 63 to a single base 64 digit.
|
|
*/
|
|
exports.encode = function(number) {
|
|
if (0 <= number && number < intToCharMap.length) {
|
|
return intToCharMap[number];
|
|
}
|
|
throw new TypeError("Must be between 0 and 63: " + number);
|
|
};
|