Turn a JSON sample into TypeScript interfaces, inferring nested object types and union types for arrays that mix shapes. INTERFACESUNION ARRAYSOPTIONAL FIELDSCLIENT-SIDE
Decode a JSON Web Token, list its claims on a timeline and flag expiry.
Encode and decode Bitcoin's Base58 alphabet, with direct Base58 to hex and Base64 conversion.
Shift subtitle timings by any amount, enforce reading speed and renumber cues without overlap.
Compare two JSON documents key by key and see exactly what was added, removed or changed.
Push uncertainties through any formula step by step, in quadrature or worst case, with partial derivatives and a relative or absolute output error.
Length, area and volume change with temperature for any material, plus the fixed-length gap a joint needs to stay sealed from cold to hot.
Add or subtract business days with a real holiday calendar, count working days between two dates, and see every excluded weekend or holiday listed.
Bank a week of logged sleep against the hours you actually need, then read the recovery schedule that clears the debt without wrecking the next night.
