Ignore padding on decode about base64-js HOT 2 OPEN

From those lines in the code seems URL-safe base64 strings are supported, but if padding is required then those aren't supported as some variants don't use it.

Node supports decoding URL-safe base64 strings without padding. Example: Buffer.from('HI', 'base64') return "<Buffer 1c>". base64js.toByteArray('HI') throws "Invalid string. Length must be a multiple of 4".

from base64-js.

As a workaround, I re-inject any missing padding before passing the text to this library, like so -

let b64 = "AAAAAAA"; // base64-encoded text that could be missing padding
if( (b64.length % 4) !== 0) b64 += "=".repeat(4 - (b64.length % 4))

from base64-js.