@gaonengwww/jose/dist/webapi/util/decode_jwt.js

JWA, JWS, JWE, JWT, JWK, JWKS for Node.js, Browser, Cloudflare Workers, Deno, Bun, and other Web-interoperable runtimes

// src/lib/buffer_utils.ts
var encoder = new TextEncoder();
var decoder = new TextDecoder();
var MAX_INT32 = 2 ** 32;

// src/lib/base64.ts
function decodeBase64(encoded) {
  if (Uint8Array.fromBase64) {
    return Uint8Array.fromBase64(encoded);
  }
  const binary = atob(encoded);
  const bytes = new Uint8Array(binary.length);
  for (let i = 0; i < binary.length; i++) {
    bytes[i] = binary.charCodeAt(i);
  }
  return bytes;
}

// src/util/base64url.ts
function decode(input) {
  if (Uint8Array.fromBase64) {
    return Uint8Array.fromBase64(typeof input === "string" ? input : decoder.decode(input), {
      alphabet: "base64url"
    });
  }
  let encoded = input;
  if (encoded instanceof Uint8Array) {
    encoded = decoder.decode(encoded);
  }
  encoded = encoded.replace(/-/g, "+").replace(/_/g, "/").replace(/\s/g, "");
  try {
    return decodeBase64(encoded);
  } catch {
    throw new TypeError("The input to be decoded is not correctly encoded.");
  }
}

// src/lib/is_object.ts
function isObjectLike(value) {
  return typeof value === "object" && value !== null;
}
var is_object_default = (input) => {
  if (!isObjectLike(input) || Object.prototype.toString.call(input) !== "[object Object]") {
    return false;
  }
  if (Object.getPrototypeOf(input) === null) {
    return true;
  }
  let proto = input;
  while (Object.getPrototypeOf(proto) !== null) {
    proto = Object.getPrototypeOf(proto);
  }
  return Object.getPrototypeOf(input) === proto;
};

// src/util/errors.ts
var JOSEError = class extends Error {
  /**
   * A unique error code for the particular error subclass.
   *
   * @ignore
   */
  static code = "ERR_JOSE_GENERIC";
  /** A unique error code for {@link JOSEError}. */
  code = "ERR_JOSE_GENERIC";
  /** @ignore */
  constructor(message, options) {
    super(message, options);
    this.name = this.constructor.name;
    Error.captureStackTrace?.(this, this.constructor);
  }
};
var JWTInvalid = class extends JOSEError {
  /** @ignore */
  static code = "ERR_JWT_INVALID";
  /** A unique error code for {@link JWTInvalid}. */
  code = "ERR_JWT_INVALID";
};

// src/util/decode_jwt.ts
function decodeJwt(jwt) {
  if (typeof jwt !== "string")
    throw new JWTInvalid("JWTs must use Compact JWS serialization, JWT must be a string");
  const { 1: payload, length } = jwt.split(".");
  if (length === 5) throw new JWTInvalid("Only JWTs using Compact JWS serialization can be decoded");
  if (length !== 3) throw new JWTInvalid("Invalid JWT");
  if (!payload) throw new JWTInvalid("JWTs must contain a payload");
  let decoded;
  try {
    decoded = decode(payload);
  } catch {
    throw new JWTInvalid("Failed to base64url decode the payload");
  }
  let result;
  try {
    result = JSON.parse(decoder.decode(decoded));
  } catch {
    throw new JWTInvalid("Failed to parse the decoded payload as JSON");
  }
  if (!is_object_default(result))
    throw new JWTInvalid("Invalid JWT Claims Set");
  return result;
}
export {
  decodeJwt
};