veffect/node_modules/effect/dist/esm/internal/encoding/base64Url.js

powerful TypeScript validation library built on the robust foundation of Effect combining exceptional type safety, high performance, and developer experience. Taking inspiration from Effect's functional principles, VEffect delivers a balanced approach tha

import * as Either from "../../Either.js";
import * as Base64 from "./base64.js";
import { DecodeException } from "./common.js";
/** @internal */
export const encode = data => Base64.encode(data).replace(/=/g, "").replace(/\+/g, "-").replace(/\//g, "_");
/** @internal */
export const decode = str => {
  const length = str.length;
  if (length % 4 === 1) {
    return Either.left(DecodeException(str, `Length should be a multiple of 4, but is ${length}`));
  }
  if (!/^[-_A-Z0-9]*?={0,2}$/i.test(str)) {
    return Either.left(DecodeException(str, "Invalid input"));
  }
  // Some variants allow or require omitting the padding '=' signs
  let sanitized = length % 4 === 2 ? `${str}==` : length % 4 === 3 ? `${str}=` : str;
  sanitized = sanitized.replace(/-/g, "+").replace(/_/g, "/");
  return Base64.decode(sanitized);
};
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