src/stats/stat-typedef.js

/** An object where each cell on the grid has a key (its {@link CellId}), and the
corresponding value at that key is an array with some values for that cell. These
arrays do not have to be of the same length.
@typedef {object} CellArrayObject
*/

/** An object where each cell on the grid has a key (its {@link CellId}), and the
corresponding value at that key is single property of that cell. 
@typedef {object} CellObject
*/