sv-in/LICENSE.txt

## annotated.js
function (
  a, // base62 encoded string
  b, // placeholder for result
  c, // placeholder for iterator
  d  // placeholder for char code
) {

  for (
    b = c = ( // 'false - 1' will return '-1' and 'true - 1' will return '0'
      a === (/\W|_|^$/.test(a += "") || a) // tests if 'a' is a properly base62-encoded string and coerces it to one
    ) - 1; // so, 'b' and 'c' are initialized with either '-1' or '0'

    d = a.charCodeAt(c++); // if 'c' equals '-1', 'd' is 'NaN' which breaks the loop execution
  )

    b = b * 62 + d - [, 48, 29, 87][d >> 5]; // See comments : https://gist.github.com/1170594#gistcomment-48129

  return b // positive base10 integer or '-1' if 'a' is not a base62 encoded string

}

## index.js
function(a,b,c,d){for(b=c=(a===(/\W|_|^$/.test(a+="")||a))-1;d=a.charCodeAt(c++);)b=b*62+d-[,48,29,87][d>>5];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 decode",

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

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

## test.html
<!DOCTYPE html>
<title>Foo</title>
<div>Expected value: <b>3748986303764</b></div>
<div>Actual value: <b id="ret"></b></div>
<script>
  var base62decode = function(a,b,c,d){for(b=c=(a===(/\W|_|^$/.test(a+="")||a))-1;d=a.charCodeAt(c++);)b=b*62+d-[,48,29,87][d>>5];return b};

  document.getElementById("ret").innerHTML = base62decode("140bytes")
</script>
	function (
	a, // base62 encoded string
	b, // placeholder for result
	c, // placeholder for iterator
	d // placeholder for char code
	) {

	for (
	b = c = ( // 'false - 1' will return '-1' and 'true - 1' will return '0'
	a === (/\W\|_\|^$/.test(a += "") \|\| a) // tests if 'a' is a properly base62-encoded string and coerces it to one
	) - 1; // so, 'b' and 'c' are initialized with either '-1' or '0'

	d = a.charCodeAt(c++); // if 'c' equals '-1', 'd' is 'NaN' which breaks the loop execution
	)

	b = b * 62 + d - [, 48, 29, 87][d >> 5]; // See comments : https://gist.github.com/1170594#gistcomment-48129

	return b // positive base10 integer or '-1' if 'a' is not 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 decode",

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

	"keywords": [
	"base62",
	"decode",
	"string",
	"number",
	"integer"
	]
	}
	<!DOCTYPE html>
	<title>Foo</title>
	<div>Expected value: <b>3748986303764</b></div>
	<div>Actual value: <b id="ret"></b></div>
	<script>
	var base62decode = function(a,b,c,d){for(b=c=(a===(/\W\|_\|^$/.test(a+="")\|\|a))-1;d=a.charCodeAt(c++);)b=b*62+d-[,48,29,87][d>>5];return b};

	document.getElementById("ret").innerHTML = base62decode("140bytes")
	</script>