sv-in/LICENSE.txt

## annotated.js
function (
  a, // positive base10 encoded integer
  b, // placeholder for result
  c  // placeholder for modulo
) {

  for (
    a = a !== +a || a % 1 ? -1 : a, b = ""; // if not a base10 integer, 'a' will be '-1'
                                            // for example, '.5 % 1 == .5' but '1 % 1 == 0'
    a >= 0; // also prevents the user to use negative base10 integers
    a = Math.floor(a / 62) || -1 // using a bitwise hack here will fail with great numbers
  )

    // a%62 -> 0-61
    // 0-9   | 36-61 | 10-35
    // 48-57 | 65-90 | 97-121
    // 0-9   | A-Z   | a-z

    b = String.fromCharCode(((c = a % 62) > 9 ? c > 35 ? 29 : 87 : 48) + c) + b;

  return b // will return either an empty or a base62-encoded string

}

## index.js
function(a,b,c){for(a=a!==+a||a%1?-1:a,b="";a>=0;a=Math.floor(a/62)||-1)b=String.fromCharCode(((c=a%62)>9?c>35?29:87:48)+c)+b;return b}

## LICENSE.txt
            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                    Version 2, December 2004

 Copyright (C) 2011 Sebastien P. https://twitter.com/#!/_sebastienp

 Everyone is permitted to copy and distribute verbatim or modified
 copies of this license document, and changing it is allowed as long
 as the name is changed.

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. You just DO WHAT THE FUCK YOU WANT TO.

## package.json
{
  "name": "base62 encode",

  "description": "A JavaScript implementation of base62 encode.",

  "keywords": [
    "base62",
    "encode",
    "integer",
    "number",
    "string"
  ]
}

## test.html
<!DOCTYPE html>
<title>Foo</title>
<div>Expected value: <b>140bytes</b></div>
<div>Actual value: <b id="ret"></b></div>
<script>
  var base62encode = function(a,b,c){for(a=a!==+a||a%1?-1:a,b="";a>=0;a=Math.floor(a/62)||-1)b=String.fromCharCode(((c=a%62)>9?c>35?29:87:48)+c)+b;return b};

  document.getElementById("ret").innerHTML = base62encode(3748986303764)
</script>
	function (
	a, // positive base10 encoded integer
	b, // placeholder for result
	c // placeholder for modulo
	) {

	for (
	a = a !== +a \|\| a % 1 ? -1 : a, b = ""; // if not a base10 integer, 'a' will be '-1'
	// for example, '.5 % 1 == .5' but '1 % 1 == 0'
	a >= 0; // also prevents the user to use negative base10 integers
	a = Math.floor(a / 62) \|\| -1 // using a bitwise hack here will fail with great numbers
	)

	// a%62 -> 0-61
	// 0-9 \| 36-61 \| 10-35
	// 48-57 \| 65-90 \| 97-121
	// 0-9 \| A-Z \| a-z

	b = String.fromCharCode(((c = a % 62) > 9 ? c > 35 ? 29 : 87 : 48) + c) + b;

	return b // will return either an empty or a base62-encoded string

	}
	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	Version 2, December 2004

	Copyright (C) 2011 Sebastien P. https://twitter.com/#!/_sebastienp

	Everyone is permitted to copy and distribute verbatim or modified
	copies of this license document, and changing it is allowed as long
	as the name is changed.

	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

	0. You just DO WHAT THE FUCK YOU WANT TO.
	{
	"name": "base62 encode",

	"description": "A JavaScript implementation of base62 encode.",

	"keywords": [
	"base62",
	"encode",
	"integer",
	"number",
	"string"
	]
	}
	<!DOCTYPE html>
	<title>Foo</title>
	<div>Expected value: <b>140bytes</b></div>
	<div>Actual value: <b id="ret"></b></div>
	<script>
	var base62encode = function(a,b,c){for(a=a!==+a\|\|a%1?-1:a,b="";a>=0;a=Math.floor(a/62)\|\|-1)b=String.fromCharCode(((c=a%62)>9?c>35?29:87:48)+c)+b;return b};

	document.getElementById("ret").innerHTML = base62encode(3748986303764)
	</script>