Function byteLength

packages/main/test/pages/diffable-html.js:39–42

(b64)

    }

    function byteLength (b64) {
      // base64 is 4/3 + up to two characters of the original data
      return (b64.length * 3 / 4) - placeHoldersCount(b64)
    }

    function toByteArray (b64) {
      var i, l, tmp, placeHolders, arr