TilingWeightedSplit

TilingWeightedSplit = `${TilingSplit}:${string}`

Defined in: packages/protocol/src/lib/tiling-split-token.ts:24

A split token carrying an explicit weight suffix: an axis, a colon, then comma-separated positive integers — "V:1,1,1", "H:2,1".

The weight count declares the token’s arity. "V:1,1,1" consumes the next three subtrees from the preorder array, not two, and each child takes weight / sum(weights) of the parent region.

A weight is a share relative to its siblings, not a fraction of the parent, so any uniform scaling is a no-op: 1,1,1 and 2,2,2 are both exact thirds. Weights are integers because integers keep the validity predicate total — no NaN, no float-precision edge cases — and because a decimal field is not interpreted: parseTilingSplitToken rounds it to the nearest integer with a floor of 1, so "V:0.7,0.3" reads as an even two-way split and reports itself repaired.

The template literal admits any suffix, including malformed ones, so that a prefixed token is never mistaken for an Instance ID leaf. parseTilingSplitToken is where a suffix is interpreted.