hookshot/src/HookFilter.ts

export class HookFilter<T extends string> {
    static convertIgnoredHooksToEnabledHooks<T extends string>(explicitlyEnabledHooks: T[] = [], ignoredHooks: T[], defaultHooks: T[]): T[] {
        const resultHookSet = new Set([
            ...explicitlyEnabledHooks,
            ...defaultHooks,
        ]);

        // For each ignored hook, remove anything that matches.
        for (const ignoredHook of ignoredHooks) {
            resultHookSet.delete(ignoredHook);
            // If the hook is a "root" hook name, remove all children.
            for (const enabledHook of resultHookSet) {
                if (enabledHook.startsWith(`${ignoredHook}.`)) {
                    resultHookSet.delete(enabledHook);
                } 
            }
        }

        return [...resultHookSet];
    }

    constructor(
        public enabledHooks: T[] = [],
    ) {

    }

    public shouldSkip(...hookName: T[]) {
        // Should skip if all of the hook names are missing
        return hookName.every(name => !this.enabledHooks.includes(name));
    }
}