Function resolveUnit

src/compute-engine/numerics/unit-data.ts:273–286

* Resolve a unit symbol — first by direct table lookup, then by prefix * parsing. Returns a synthetic `UnitEntry` (dimension + effective scale) * or `null` for unknown symbols.

(symbol: string)

    if (SI_PREFIXES[p2] !== undefined && PREFIXABLE_UNITS.has(rest2)) {
      const base = UNIT_TABLE[rest2];
      if (base) return { prefixScale: SI_PREFIXES[p2], baseEntry: base };
    }
  }

  // Try 1-char prefix
  if (symbol.length > 1) {
    const p1 = symbol.slice(0, 1);
    const rest1 = symbol.slice(1);
    if (SI_PREFIXES[p1] !== undefined && PREFIXABLE_UNITS.has(rest1)) {
      const base = UNIT_TABLE[rest1];
      if (base) return { prefixScale: SI_PREFIXES[p1], baseEntry: base };
    }
  }

  return null;
}