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node_modules/jose/dist/browser/util/decode_jwt.js

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+import { decode as base64url } from './base64url.js';
+import { decoder } from '../lib/buffer_utils.js';
+import isObject from '../lib/is_object.js';
+import { JWTInvalid } from './errors.js';
+export 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 = base64url(payload);
+    }
+    catch (_a) {
+        throw new JWTInvalid('Failed to base64url decode the payload');
+    }
+    let result;
+    try {
+        result = JSON.parse(decoder.decode(decoded));
+    }
+    catch (_b) {
+        throw new JWTInvalid('Failed to parse the decoded payload as JSON');
+    }
+    if (!isObject(result))
+        throw new JWTInvalid('Invalid JWT Claims Set');
+    return result;
+}