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@juanelas/base64

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Base64 for both node.js and browser javascript. It supports URL-safe encoding and enabling/disabling padding. Buffers can be implementedd using ArrayBuffer, any TypedArray, or Buffer

github.com/juanelas/base64

juanelas/base64

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var base64=function(e){"use strict";return e.decode=function(e,r=!1){{let t=!1;if(/^[0-9a-zA-Z_-]+={0,2}$/.test(e))t=!0;else if(!/^[0-9a-zA-Z+/]*={0,2}$/.test(e))throw new Error("Not a valid base64 input");t&&(e=e.replace(/-/g,"+").replace(/_/g,"/").replace(/=/g,""));const n=new Uint8Array(atob(e).split("").map((e=>e.charCodeAt(0))));return r?(new TextDecoder).decode(n):n}},e.encode=function(e,r=!1,t=!0){let n="";return n=(e=>{const r=[];for(let t=0;t<e.length;t+=32768)r.push(String.fromCharCode.apply(null,e.subarray(t,t+32768)));return btoa(r.join(""))})("string"==typeof e?(new TextEncoder).encode(e):new Uint8Array(e)),r&&(n=function(e){return e.replace(/\+/g,"-").replace(/\//g,"_")}(n)),t||(n=n.replace(/=/g,"")),n},e}({});