Function evalExpr

packages/infra/src/Store/Memory.ts:82–93

(value: unknown, expression: ComputedProjectionMathIrExpression)

    ? (_value: unknown) => true
    : (value: unknown) => codeFilter3_(filter, value)
  const evalExpr = (value: unknown, expression: ComputedProjectionMathIrExpression): number => {
    switch (expression._tag) {
      case "field": {
        const v = get(value, expression.field)
        return typeof v === "number" ? v : Number(v) || 0
      }
      case "mul":
        return evalExpr(value, expression.left) * evalExpr(value, expression.right)
      default:
        return assertUnreachable(expression)
    }
  }
  switch (computed._tag) {
    case "relation-count":
      return relation.reduce<number>((acc, value) => matches(value) ? acc + 1 : acc, 0)