or.ts
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or.ts
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	import Bluebird from "bluebird";
	import Policy, {
	ReducingPolicy,
	PolicyDecision,
	} from "../../chip-types/policy.js";

	import type Context from "../../context.js";

	import { AllowAll } from "../../datastore/allow-all.js";
	import { default as QueryOr } from "../../datastore/query-or.js";
	import type { CollectionItem } from "../../main.js";

	export default class Or extends ReducingPolicy {
	static type_name = "or";
	async _getRestrictingQuery(context: Context) {
	const queries = await Bluebird.map(this.policies, (strategy) =>
	strategy.getRestrictingQuery(context)
	);
	if (queries.some((query) => query instanceof AllowAll)) {
	return new AllowAll();
	}
	return new QueryOr(...queries);
	}

	async isItemSensitive(context: Context) {
	return Bluebird.map(this.policies, (strategy) =>
	strategy.isItemSensitive(context)
	).reduce((a, b) => a \|\| b, true);
	}

	async checkerFunction(
	context: Context,
	item_getter: () => Promise<CollectionItem>
	) {
	const results = await this.checkAllPolicies(context, item_getter);
	const positives: Exclude<PolicyDecision, null>[] = results.filter(
	(result) => result?.allowed === true
	) as Exclude<PolicyDecision, null>[];
	if (positives.length === 0) {
	return Policy.deny(results.map((r) => `"${r?.reason}"`).join(", "));
	}
	return Policy.allow(positives[0].reason);
	}
	}