Exceptions

Every exception extends RoundlyConsulting\TradingAnalytics\Exceptions\TradingAnalyticsException (a RuntimeException), so you can catch them all with one catch:

use RoundlyConsulting\TradingAnalytics\Exceptions\TradingAnalyticsException;
use RoundlyConsulting\TradingAnalytics\Facades\TradingAnalytics;

try {
    $analytics = TradingAnalytics::for($rows)->scale($scale)->calculate();
} catch (TradingAnalyticsException $e) {
    // an invalid trade row, an unordered source, a chunk size below 1, a negative scale,
    // a non-numeric value, a division by zero, an unknown calculator or engine
    report($e);
}

Trade::collect() is lazy: an invalid row or an out-of-order trade throws while calculate() consumes it, not when the collection is built. A query without an orderBy and a chunk below 1 throw as soon as the source is passed in.

A malformed scale or win_rate_period config is the one exception outside this family: it throws package-toolkit’s InvalidConfigurationException, naming the key, as soon as the engine is built.