1import { isNotNull } from "../../utils/Other";
 2import { SheetColumnRowKey } from "../../models/common/SheetColumnRowKey";
 3import { Complex } from "../../models/common/Types";
 4import { Converters } from "../../utils/Converters";
 5import { Counter } from "../../utils/Counter";
 6import { Mappers } from "../../utils/Mappers";
 7import { Predicates } from "../../utils/Predicates";
 8import { Reducers } from "../../utils/Reducers";
 9import { AbstractFormula } from "../AbstractFormula";
10import { FormulaName } from "../FormulaName";
11
12export class COUNT extends AbstractFormula {
13  static SELF: COUNT = new COUNT();
14  NAME = FormulaName.COUNT;
15
16  internal(origin: SheetColumnRowKey, ...values: Array<Complex>) {
17    AbstractFormula.checkAtLeastLength(values.length, 1, this.NAME);
18    const counter = new Counter<number>();
19    values
20      .map(this.lookup)
21      .map(Mappers.flattenGridsToArrays) // 1, 2, [null, 1, "0", "Text.", null]
22      .map(Mappers.ensureAllAreArrays) // [1], [2], [null, 1, "0", null]
23      .reduce(Reducers.join) // [1, 2, null, 1, "0", null]
24      .filter(isNotNull) // [1, 2, 1, "0"]
25      .filter(Predicates.isNumeric)
26      .map(Converters.toNumber)
27      .map((value) => counter.count(value)); // [1, 2, 1]
28    return counter.getCount();
29  }
30}