Audio DSP library for JavaScript/TypeScript using a functional, declarative approach. Use when working with Elementary Audio code including: (1) Writing audio synthesis and processing code using the el.* API, (2) Understanding existing Elementary Audio code, (3) Setting up web-renderer or offline-renderer, (4) Working with samples, filters, oscillators, envelopes, delays, dynamics, sequencing, (5) Debugging audio graph issues, keys, refs, or Virtual File System problems.