24 lines
735 B
TypeScript
24 lines
735 B
TypeScript
/**
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* Lightweight browser-safe JWT payload decoder without external native dependencies.
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*/
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export function parseJwtClaims(token: string): Record<string, any> {
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if (!token || typeof token !== 'string') return {};
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try {
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const parts = token.split('.');
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if (parts.length < 2) return {};
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const base64Url = parts[1];
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const base64 = base64Url.replace(/-/g, '+').replace(/_/g, '/');
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const jsonPayload = decodeURIComponent(
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window
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.atob(base64)
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.split('')
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.map((c) => '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2))
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.join('')
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);
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return JSON.parse(jsonPayload);
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} catch (err) {
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console.debug('Failed to decode JWT claims payload:', err);
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return {};
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}
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}
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