Feature Policies API + Invitations Policies (#375)

- Added Feature Policy API: a declarative system to enable/disable/modify default behavior in the SaaS kit
- Team invitation policies with pre-checks using the Feature Policy API: Invite Members dialog now shows loading, errors, and clear reasons when invitations are blocked
- Version bump to 2.16.0 and widespread dependency updates (Supabase, React types, react-i18next, etc.).
- Added comprehensive docs for the new policy system and orchestrators.
- Subscription cancellations now trigger immediate invoicing explicitly
This commit is contained in:
Giancarlo Buomprisco
2025-09-30 12:36:19 +08:00
committed by GitHub
parent 3c13b5ec1e
commit 1dd6fdad22
53 changed files with 3908 additions and 1128 deletions

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@@ -8,11 +8,11 @@
"format": "prettier --check --write \"**/*.{js,cjs,mjs,ts,tsx,md,json}\""
},
"dependencies": {
"@ai-sdk/openai": "^2.0.34",
"@ai-sdk/openai": "^2.0.38",
"@faker-js/faker": "^10.0.0",
"@hookform/resolvers": "^5.2.2",
"@tanstack/react-query": "5.90.2",
"ai": "5.0.51",
"ai": "5.0.56",
"lucide-react": "^0.544.0",
"next": "15.5.4",
"nodemailer": "^7.0.6",
@@ -32,7 +32,7 @@
"@tailwindcss/postcss": "^4.1.13",
"@types/node": "^24.5.2",
"@types/nodemailer": "7.0.1",
"@types/react": "19.1.13",
"@types/react": "19.1.15",
"@types/react-dom": "19.1.9",
"babel-plugin-react-compiler": "19.1.0-rc.3",
"pino-pretty": "13.0.0",

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@@ -12,7 +12,7 @@
"author": "Makerkit",
"devDependencies": {
"@playwright/test": "^1.55.1",
"@supabase/supabase-js": "2.57.4",
"@supabase/supabase-js": "2.58.0",
"@types/node": "^24.5.2",
"dotenv": "17.2.2",
"node-html-parser": "^7.0.1",

View File

@@ -115,18 +115,17 @@ export class InvitationsPageObject {
async acceptInvitation() {
console.log('Accepting invitation...');
const click = this.page
await Promise.all([
this.page
.locator('[data-test="join-team-form"] button[type="submit"]')
.click();
const response = this.page.waitForResponse((response) => {
.click(),
this.page.waitForResponse((response) => {
return (
response.url().includes('/join') &&
response.request().method() === 'POST'
);
});
await Promise.all([click, response]);
}),
]);
console.log('Invitation accepted');
}

View File

@@ -13,7 +13,7 @@ test.describe('Team Invitation with MFA Flow', () => {
const invitations = new InvitationsPageObject(page);
await auth.loginAsUser({
email: 'test@makerkit.dev',
email: 'owner@makerkit.dev',
});
const teamName = `test-team-${Math.random().toString(36).substring(2, 15)}`;

View File

@@ -0,0 +1,69 @@
import { NextResponse } from 'next/server';
import { z } from 'zod';
import { enhanceRouteHandler } from '@kit/next/routes';
import { getSupabaseServerClient } from '@kit/supabase/server-client';
import {
createInvitationContextBuilder,
createInvitationsPolicyEvaluator,
} from '@kit/team-accounts/policies';
export const GET = enhanceRouteHandler(
async function ({ params, user }) {
const client = getSupabaseServerClient();
const { account } = z.object({ account: z.string() }).parse(params);
try {
// Evaluate with standard evaluator
const evaluator = createInvitationsPolicyEvaluator();
const hasPolicies = await evaluator.hasPoliciesForStage('preliminary');
if (!hasPolicies) {
return NextResponse.json({
allowed: true,
reasons: [],
metadata: {
policiesEvaluated: 0,
timestamp: new Date().toISOString(),
noPoliciesConfigured: true,
},
});
}
// Build context for policy evaluation (empty invitations for testing)
const contextBuilder = createInvitationContextBuilder(client);
const context = await contextBuilder.buildContext(
{
invitations: [],
accountSlug: account,
},
user,
);
// validate against policies
const result = await evaluator.canInvite(context, 'preliminary');
return NextResponse.json(result);
} catch (error) {
return NextResponse.json(
{
allowed: false,
reasons: [
error instanceof Error ? error.message : 'Unknown error occurred',
],
metadata: {
error: true,
originalError:
error instanceof Error ? error.message : String(error),
},
},
{ status: 500 },
);
}
},
{
auth: true,
},
);

View File

@@ -56,7 +56,7 @@
"@marsidev/react-turnstile": "^1.3.1",
"@nosecone/next": "1.0.0-beta.12",
"@radix-ui/react-icons": "^1.3.2",
"@supabase/supabase-js": "2.57.4",
"@supabase/supabase-js": "2.58.0",
"@tanstack/react-query": "5.90.2",
"@tanstack/react-table": "^8.21.3",
"date-fns": "^4.1.0",
@@ -67,7 +67,7 @@
"react": "19.1.1",
"react-dom": "19.1.1",
"react-hook-form": "^7.63.0",
"react-i18next": "^15.7.3",
"react-i18next": "^16.0.0",
"recharts": "2.15.3",
"tailwind-merge": "^3.3.1",
"zod": "^3.25.74"
@@ -79,13 +79,13 @@
"@next/bundle-analyzer": "15.5.4",
"@tailwindcss/postcss": "^4.1.13",
"@types/node": "^24.5.2",
"@types/react": "19.1.13",
"@types/react": "19.1.15",
"@types/react-dom": "19.1.9",
"babel-plugin-react-compiler": "19.1.0-rc.3",
"cssnano": "^7.1.1",
"pino-pretty": "13.0.0",
"prettier": "^3.6.2",
"supabase": "2.45.5",
"supabase": "2.47.2",
"tailwindcss": "4.1.13",
"tailwindcss-animate": "^1.0.7",
"typescript": "^5.9.2"

View File

@@ -159,5 +159,17 @@
"leaveTeamInputLabel": "Please type LEAVE to confirm leaving the team.",
"leaveTeamInputDescription": "By leaving the team, you will no longer have access to it.",
"reservedNameError": "This name is reserved. Please choose a different one.",
"specialCharactersError": "This name cannot contain special characters. Please choose a different one."
"specialCharactersError": "This name cannot contain special characters. Please choose a different one.",
"checkingPolicies": "Loading. Please wait...",
"policyCheckError": "We are unable to verify invitations restrictions. Please try again.",
"invitationsBlockedMultiple": "Invitations are currently not allowed for the following reasons:",
"invitationsBlockedDefault": "Invitations are currently not allowed due to policy restrictions.",
"policyErrors": {
"subscriptionRequired": "An active subscription is required to invite team members.",
"paddleTrialRestriction": "Cannot invite members during trial period with per-seat billing on Paddle."
},
"policyRemediation": {
"subscriptionRequired": "Please upgrade your plan or activate your subscription",
"paddleTrialRestriction": "Wait until trial period ends or upgrade to full plan"
}
}

View File

@@ -1,6 +1,6 @@
{
"name": "next-supabase-saas-kit-turbo",
"version": "2.15.1",
"version": "2.16.0",
"private": true,
"sideEffects": false,
"engines": {

View File

@@ -26,14 +26,14 @@
"@kit/supabase": "workspace:*",
"@kit/tsconfig": "workspace:*",
"@kit/ui": "workspace:*",
"@supabase/supabase-js": "2.57.4",
"@types/react": "19.1.13",
"@supabase/supabase-js": "2.58.0",
"@types/react": "19.1.15",
"date-fns": "^4.1.0",
"lucide-react": "^0.544.0",
"next": "15.5.4",
"react": "19.1.1",
"react-hook-form": "^7.63.0",
"react-i18next": "^15.7.3",
"react-i18next": "^16.0.0",
"zod": "^3.25.74"
},
"typesVersions": {

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@@ -32,6 +32,7 @@ class BillingWebhooksService {
return gateway.cancelSubscription({
subscriptionId: subscription.id,
invoiceNow: true,
});
}
}

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@@ -24,7 +24,7 @@
"@kit/supabase": "workspace:*",
"@kit/tsconfig": "workspace:*",
"@kit/ui": "workspace:*",
"@types/react": "19.1.13",
"@types/react": "19.1.15",
"next": "15.5.4",
"react": "19.1.1",
"zod": "^3.25.74"

View File

@@ -27,7 +27,7 @@
"@kit/supabase": "workspace:*",
"@kit/tsconfig": "workspace:*",
"@kit/ui": "workspace:*",
"@types/react": "19.1.13",
"@types/react": "19.1.15",
"date-fns": "^4.1.0",
"next": "15.5.4",
"react": "19.1.1",

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@@ -27,7 +27,7 @@
"@kit/tsconfig": "workspace:*",
"@kit/ui": "workspace:*",
"@types/node": "^24.5.2",
"@types/react": "19.1.13",
"@types/react": "19.1.15",
"react": "19.1.1",
"zod": "^3.25.74"
},

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@@ -21,7 +21,7 @@
"@kit/tsconfig": "workspace:*",
"@kit/ui": "workspace:*",
"@types/node": "^24.5.2",
"@types/react": "19.1.13",
"@types/react": "19.1.15",
"wp-types": "^4.68.1"
},
"typesVersions": {

View File

@@ -22,7 +22,7 @@
"@kit/supabase": "workspace:*",
"@kit/team-accounts": "workspace:*",
"@kit/tsconfig": "workspace:*",
"@supabase/supabase-js": "2.57.4",
"@supabase/supabase-js": "2.58.0",
"zod": "^3.25.74"
},
"typesVersions": {

View File

@@ -13,7 +13,7 @@
".": "./src/index.ts"
},
"dependencies": {
"@react-email/components": "0.5.4"
"@react-email/components": "0.5.5"
},
"devDependencies": {
"@kit/eslint-config": "workspace:*",

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@@ -34,9 +34,9 @@
"@kit/tsconfig": "workspace:*",
"@kit/ui": "workspace:*",
"@radix-ui/react-icons": "^1.3.2",
"@supabase/supabase-js": "2.57.4",
"@supabase/supabase-js": "2.58.0",
"@tanstack/react-query": "5.90.2",
"@types/react": "19.1.13",
"@types/react": "19.1.15",
"@types/react-dom": "19.1.9",
"lucide-react": "^0.544.0",
"next": "15.5.4",
@@ -44,7 +44,7 @@
"react": "19.1.1",
"react-dom": "19.1.1",
"react-hook-form": "^7.63.0",
"react-i18next": "^15.7.3",
"react-i18next": "^16.0.0",
"zod": "^3.25.74"
},
"prettier": "@kit/prettier-config",

View File

@@ -20,10 +20,10 @@
"@kit/ui": "workspace:*",
"@makerkit/data-loader-supabase-core": "^0.0.10",
"@makerkit/data-loader-supabase-nextjs": "^1.2.5",
"@supabase/supabase-js": "2.57.4",
"@supabase/supabase-js": "2.58.0",
"@tanstack/react-query": "5.90.2",
"@tanstack/react-table": "^8.21.3",
"@types/react": "19.1.13",
"@types/react": "19.1.15",
"lucide-react": "^0.544.0",
"next": "15.5.4",
"react": "19.1.1",

View File

@@ -29,13 +29,13 @@
"@kit/ui": "workspace:*",
"@marsidev/react-turnstile": "^1.3.1",
"@radix-ui/react-icons": "^1.3.2",
"@supabase/supabase-js": "2.57.4",
"@supabase/supabase-js": "2.58.0",
"@tanstack/react-query": "5.90.2",
"@types/react": "19.1.13",
"@types/react": "19.1.15",
"lucide-react": "^0.544.0",
"next": "15.5.4",
"react-hook-form": "^7.63.0",
"react-i18next": "^15.7.3",
"react-i18next": "^16.0.0",
"sonner": "^2.0.7",
"zod": "^3.25.74"
},

View File

@@ -19,13 +19,13 @@
"@kit/supabase": "workspace:*",
"@kit/tsconfig": "workspace:*",
"@kit/ui": "workspace:*",
"@supabase/supabase-js": "2.57.4",
"@supabase/supabase-js": "2.58.0",
"@tanstack/react-query": "5.90.2",
"@types/react": "19.1.13",
"@types/react": "19.1.15",
"lucide-react": "^0.544.0",
"react": "19.1.1",
"react-dom": "19.1.1",
"react-i18next": "^15.7.3"
"react-i18next": "^16.0.0"
},
"prettier": "@kit/prettier-config",
"typesVersions": {

View File

@@ -12,7 +12,10 @@
"./api": "./src/server/api.ts",
"./components": "./src/components/index.ts",
"./hooks/*": "./src/hooks/*.ts",
"./webhooks": "./src/server/services/webhooks/index.ts"
"./webhooks": "./src/server/services/webhooks/index.ts",
"./policies": "./src/server/policies/index.ts",
"./policies/orchestrator": "./src/server/policies/orchestrator.ts",
"./services/account-invitations.service": "./src/server/services/account-invitations.service.ts"
},
"dependencies": {
"nanoid": "^5.1.6"
@@ -27,15 +30,16 @@
"@kit/monitoring": "workspace:*",
"@kit/next": "workspace:*",
"@kit/otp": "workspace:*",
"@kit/policies": "workspace:*",
"@kit/prettier-config": "workspace:*",
"@kit/shared": "workspace:*",
"@kit/supabase": "workspace:*",
"@kit/tsconfig": "workspace:*",
"@kit/ui": "workspace:*",
"@supabase/supabase-js": "2.57.4",
"@supabase/supabase-js": "2.58.0",
"@tanstack/react-query": "5.90.2",
"@tanstack/react-table": "^8.21.3",
"@types/react": "19.1.13",
"@types/react": "19.1.15",
"@types/react-dom": "19.1.9",
"class-variance-authority": "^0.7.1",
"date-fns": "^4.1.0",
@@ -44,7 +48,7 @@
"react": "19.1.1",
"react-dom": "19.1.1",
"react-hook-form": "^7.63.0",
"react-i18next": "^15.7.3",
"react-i18next": "^16.0.0",
"zod": "^3.25.74"
},
"prettier": "@kit/prettier-config",

View File

@@ -3,10 +3,12 @@
import { useState, useTransition } from 'react';
import { zodResolver } from '@hookform/resolvers/zod';
import { useQuery } from '@tanstack/react-query';
import { Plus, X } from 'lucide-react';
import { useFieldArray, useForm } from 'react-hook-form';
import { useTranslation } from 'react-i18next';
import { Alert, AlertDescription } from '@kit/ui/alert';
import { Button } from '@kit/ui/button';
import {
Dialog,
@@ -27,6 +29,7 @@ import {
import { If } from '@kit/ui/if';
import { Input } from '@kit/ui/input';
import { toast } from '@kit/ui/sonner';
import { Spinner } from '@kit/ui/spinner';
import {
Tooltip,
TooltipContent,
@@ -62,6 +65,13 @@ export function InviteMembersDialogContainer({
const [isOpen, setIsOpen] = useState(false);
const { t } = useTranslation('teams');
// Evaluate policies when dialog is open
const {
data: policiesResult,
isLoading: isLoadingPolicies,
error: policiesError,
} = useFetchInvitationsPolicies({ accountSlug, isOpen });
return (
<Dialog open={isOpen} onOpenChange={setIsOpen} modal>
<DialogTrigger asChild>{children}</DialogTrigger>
@@ -77,23 +87,62 @@ export function InviteMembersDialogContainer({
</DialogDescription>
</DialogHeader>
<If condition={isLoadingPolicies}>
<div className="flex flex-col items-center justify-center gap-y-4 py-8">
<Spinner className="h-6 w-6" />
<span className="text-muted-foreground text-sm">
<Trans i18nKey="teams:checkingPolicies" />
</span>
</div>
</If>
<If condition={policiesError}>
<Alert variant="destructive">
<AlertDescription>
<Trans
i18nKey="teams:policyCheckError"
values={{ error: policiesError?.message }}
/>
</AlertDescription>
</Alert>
</If>
<If condition={policiesResult && !policiesResult.allowed}>
<Alert variant="destructive">
<AlertDescription>
<Trans
i18nKey={policiesResult?.reasons[0]}
defaults={policiesResult?.reasons[0]}
/>
</AlertDescription>
</Alert>
</If>
<If condition={policiesResult?.allowed}>
<RolesDataProvider maxRoleHierarchy={userRoleHierarchy}>
{(roles) => (
<InviteMembersForm
pending={pending}
roles={roles}
onSubmit={(data) => {
startTransition(() => {
const promise = createInvitationsAction({
startTransition(async () => {
const toastId = toast.loading(t('invitingMembers'));
const result = await createInvitationsAction({
accountSlug,
invitations: data.invitations,
});
toast.promise(() => promise, {
loading: t('invitingMembers'),
success: t('inviteMembersSuccessMessage'),
error: t('inviteMembersErrorMessage'),
if (result.success) {
toast.success(t('inviteMembersSuccessMessage'), {
id: toastId,
});
} else {
toast.error(t('inviteMembersErrorMessage'), {
id: toastId,
});
}
setIsOpen(false);
});
@@ -101,6 +150,7 @@ export function InviteMembersDialogContainer({
/>
)}
</RolesDataProvider>
</If>
</DialogContent>
</Dialog>
);
@@ -275,3 +325,27 @@ function InviteMembersForm({
function createEmptyInviteModel() {
return { email: '', role: 'member' as Role };
}
function useFetchInvitationsPolicies({
accountSlug,
isOpen,
}: {
accountSlug: string;
isOpen: boolean;
}) {
return useQuery({
queryKey: ['invitation-policies', accountSlug],
queryFn: async () => {
const response = await fetch(`./members/policies`);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
return response.json();
},
enabled: isOpen,
staleTime: 5 * 60 * 1000,
refetchOnWindowFocus: false,
});
}

View File

@@ -38,5 +38,6 @@ function useFetchRoles(props: { maxRoleHierarchy: number }) {
return data.map((item) => item.name);
},
staleTime: 1000 * 60 * 30, // 30 minutes
});
}

View File

@@ -6,14 +6,18 @@ import { redirect } from 'next/navigation';
import { z } from 'zod';
import { enhanceAction } from '@kit/next/actions';
import { getLogger } from '@kit/shared/logger';
import { getSupabaseServerAdminClient } from '@kit/supabase/server-admin-client';
import { getSupabaseServerClient } from '@kit/supabase/server-client';
import { JWTUserData } from '@kit/supabase/types';
import { AcceptInvitationSchema } from '../../schema/accept-invitation.schema';
import { DeleteInvitationSchema } from '../../schema/delete-invitation.schema';
import { InviteMembersSchema } from '../../schema/invite-members.schema';
import { RenewInvitationSchema } from '../../schema/renew-invitation.schema';
import { UpdateInvitationSchema } from '../../schema/update-invitation.schema';
import { createInvitationContextBuilder } from '../policies/invitation-context-builder';
import { createInvitationsPolicyEvaluator } from '../policies/invitation-policies';
import { createAccountInvitationsService } from '../services/account-invitations.service';
import { createAccountPerSeatBillingService } from '../services/account-per-seat-billing.service';
@@ -22,13 +26,35 @@ import { createAccountPerSeatBillingService } from '../services/account-per-seat
* @description Creates invitations for inviting members.
*/
export const createInvitationsAction = enhanceAction(
async (params) => {
const client = getSupabaseServerClient();
async (params, user) => {
const logger = await getLogger();
// Create the service
logger.info(
{ params, userId: user.id },
'User requested to send invitations',
);
// Evaluate invitation policies
const policiesResult = await evaluateInvitationsPolicies(params, user);
// If the invitations are not allowed, throw an error
if (!policiesResult.allowed) {
logger.info(
{ reasons: policiesResult?.reasons, userId: user.id },
'Invitations blocked by policies',
);
return {
success: false,
reasons: policiesResult?.reasons,
};
}
// invitations are allowed, so continue with the action
const client = getSupabaseServerClient();
const service = createAccountInvitationsService(client);
// send invitations
try {
await service.sendInvitations(params);
revalidateMemberPage();
@@ -36,6 +62,11 @@ export const createInvitationsAction = enhanceAction(
return {
success: true,
};
} catch {
return {
success: false,
};
}
},
{
schema: InviteMembersSchema.and(
@@ -157,3 +188,30 @@ export const renewInvitationAction = enhanceAction(
function revalidateMemberPage() {
revalidatePath('/home/[account]/members', 'page');
}
/**
* @name evaluateInvitationsPolicies
* @description Evaluates invitation policies with performance optimization.
* @param params - The invitations to evaluate (emails and roles).
*/
async function evaluateInvitationsPolicies(
params: z.infer<typeof InviteMembersSchema> & { accountSlug: string },
user: JWTUserData,
) {
const evaluator = createInvitationsPolicyEvaluator();
const hasPolicies = await evaluator.hasPoliciesForStage('submission');
// No policies to evaluate, skip
if (!hasPolicies) {
return {
allowed: true,
reasons: [],
};
}
const client = getSupabaseServerClient();
const builder = createInvitationContextBuilder(client);
const context = await builder.buildContext(params, user);
return evaluator.canInvite(context, 'submission');
}

View File

@@ -0,0 +1,61 @@
import type { PolicyContext, PolicyResult } from '@kit/policies';
import { Database } from '@kit/supabase/database';
/**
* Invitation policy context that extends the base PolicyContext
* from @kit/policies for invitation-specific data.
*/
export interface FeaturePolicyInvitationContext extends PolicyContext {
/** The account slug being invited to */
accountSlug: string;
/** The account ID being invited to (same as accountId from base) */
accountId: string;
/** Current subscription data for the account */
subscription?: {
id: string;
status: Database['public']['Enums']['subscription_status'];
provider: Database['public']['Enums']['billing_provider'];
active: boolean;
trial_starts_at?: string;
trial_ends_at?: string;
items: Array<{
id: string;
type: Database['public']['Enums']['subscription_item_type'];
quantity: number;
product_id: string;
variant_id: string;
}>;
};
/** Current number of members in the account */
currentMemberCount: number;
/** The invitations being attempted */
invitations: Array<{
email: string;
role: string;
}>;
/** The user performing the invitation */
invitingUser: {
id: string;
email?: string;
};
}
/**
* Invitation policy result that extends the base PolicyResult
* from @kit/policies while maintaining backward compatibility.
*/
export interface FeaturePolicyInvitationResult extends PolicyResult {
/** Whether the invitations are allowed */
allowed: boolean;
/** Human-readable reason if not allowed */
reason?: string;
/** Additional metadata for logging/debugging */
metadata?: Record<string, unknown>;
}

View File

@@ -0,0 +1,7 @@
export { createInvitationsPolicyEvaluator } from './invitation-policies';
// Context building
export { createInvitationContextBuilder } from './invitation-context-builder';
// Type exports
export type { FeaturePolicyInvitationContext } from './feature-policy-invitation-context';

View File

@@ -0,0 +1,147 @@
import type { SupabaseClient } from '@supabase/supabase-js';
import { z } from 'zod';
import type { Database } from '@kit/supabase/database';
import { JWTUserData } from '@kit/supabase/types';
import { InviteMembersSchema } from '../../schema/invite-members.schema';
import type { FeaturePolicyInvitationContext } from './feature-policy-invitation-context';
/**
* Creates an invitation context builder
* @param client - The Supabase client
* @returns
*/
export function createInvitationContextBuilder(
client: SupabaseClient<Database>,
) {
return new InvitationContextBuilder(client);
}
/**
* Invitation context builder
*/
class InvitationContextBuilder {
constructor(private readonly client: SupabaseClient<Database>) {}
/**
* Build policy context for invitation evaluation with optimized parallel loading
*/
async buildContext(
params: z.infer<typeof InviteMembersSchema> & { accountSlug: string },
user: JWTUserData,
): Promise<FeaturePolicyInvitationContext> {
// Fetch all data in parallel for optimal performance
const account = await this.getAccount(params.accountSlug);
// Fetch subscription and member count in parallel using account ID
const [subscription, memberCount] = await Promise.all([
this.getSubscription(account.id),
this.getMemberCount(account.id),
]);
return {
// Base PolicyContext fields
timestamp: new Date().toISOString(),
metadata: {
accountSlug: params.accountSlug,
invitationCount: params.invitations.length,
invitingUserEmail: user.email as string,
},
// Invitation-specific fields
accountSlug: params.accountSlug,
accountId: account.id,
subscription,
currentMemberCount: memberCount,
invitations: params.invitations,
invitingUser: {
id: user.id,
email: user.email,
},
};
}
/**
* Gets the account from the database
* @param accountSlug - The slug of the account to get
* @returns
*/
private async getAccount(accountSlug: string) {
const { data: account } = await this.client
.from('accounts')
.select('id')
.eq('slug', accountSlug)
.single();
if (!account) {
throw new Error('Account not found');
}
return account;
}
/**
* Gets the subscription from the database
* @param accountId - The ID of the account to get the subscription for
* @returns
*/
private async getSubscription(accountId: string) {
const { data: subscription } = await this.client
.from('subscriptions')
.select(
`
id,
status,
active,
trial_starts_at,
trial_ends_at,
billing_provider,
subscription_items(
id,
type,
quantity,
product_id,
variant_id
)
`,
)
.eq('account_id', accountId)
.eq('active', true)
.single();
return subscription
? {
id: subscription.id,
status: subscription.status,
provider: subscription.billing_provider,
active: subscription.active,
trial_starts_at: subscription.trial_starts_at || undefined,
trial_ends_at: subscription.trial_ends_at || undefined,
items:
subscription.subscription_items?.map((item) => ({
id: item.id,
type: item.type,
quantity: item.quantity,
product_id: item.product_id,
variant_id: item.variant_id,
})) || [],
}
: undefined;
}
/**
* Gets the member count from the database
* @param accountId - The ID of the account to get the member count for
* @returns
*/
private async getMemberCount(accountId: string) {
const { count } = await this.client
.from('accounts_memberships')
.select('*', { count: 'exact', head: true })
.eq('account_id', accountId);
return count || 0;
}
}

View File

@@ -0,0 +1,39 @@
import { createPoliciesEvaluator } from '@kit/policies';
import type { FeaturePolicyInvitationContext } from './feature-policy-invitation-context';
import { invitationPolicyRegistry } from './policies';
/**
* Creates an invitation evaluator
*/
export function createInvitationsPolicyEvaluator() {
const evaluator = createPoliciesEvaluator<FeaturePolicyInvitationContext>();
return {
/**
* Checks if there are any invitation policies for the given stage
* @param stage - The stage to check if there are any invitation policies for
*/
async hasPoliciesForStage(stage: 'preliminary' | 'submission') {
return evaluator.hasPoliciesForStage(invitationPolicyRegistry, stage);
},
/**
* Evaluates the invitation policies for the given context and stage
* @param context - The context for the invitation policy
* @param stage - The stage to evaluate the invitation policies for
* @returns
*/
async canInvite(
context: FeaturePolicyInvitationContext,
stage: 'preliminary' | 'submission',
) {
return evaluator.evaluate(
invitationPolicyRegistry,
context,
'ALL',
stage,
);
},
};
}

View File

@@ -0,0 +1,70 @@
import { allow, definePolicy, deny } from '@kit/policies';
import { createPolicyRegistry } from '@kit/policies';
import { FeaturePolicyInvitationContext } from './feature-policy-invitation-context';
/**
* Feature-specific registry for invitation policies
*/
export const invitationPolicyRegistry = createPolicyRegistry();
/**
* Subscription required policy
* Checks if the account has an active subscription
*/
export const subscriptionRequiredInvitationsPolicy =
definePolicy<FeaturePolicyInvitationContext>({
id: 'subscription-required',
stages: ['preliminary', 'submission'],
evaluate: async ({ subscription }) => {
if (!subscription || !subscription.active) {
return deny({
code: 'SUBSCRIPTION_REQUIRED',
message: 'teams:policyErrors.subscriptionRequired',
remediation: 'teams:policyRemediation.subscriptionRequired',
});
}
return allow();
},
});
/**
* Paddle billing policy
* Checks if the account has a paddle subscription and is in a trial period
*/
export const paddleBillingInvitationsPolicy =
definePolicy<FeaturePolicyInvitationContext>({
id: 'paddle-billing',
stages: ['preliminary', 'submission'],
evaluate: async ({ subscription }) => {
// combine with subscriptionRequiredPolicy if subscription must be required
if (!subscription) {
return allow();
}
// Paddle specific constraint: cannot update subscription items during trial
if (
subscription.provider === 'paddle' &&
subscription.status === 'trialing'
) {
const hasPerSeatItems = subscription.items.some(
(item) => item.type === 'per_seat',
);
if (hasPerSeatItems) {
return deny({
code: 'PADDLE_TRIAL_RESTRICTION',
message: 'teams:policyErrors.paddleTrialRestriction',
remediation: 'teams:policyRemediation.paddleTrialRestriction',
});
}
}
return allow();
},
});
// register policies below to apply them
//
//

View File

@@ -12,6 +12,10 @@ import type { DeleteInvitationSchema } from '../../schema/delete-invitation.sche
import type { InviteMembersSchema } from '../../schema/invite-members.schema';
import type { UpdateInvitationSchema } from '../../schema/update-invitation.schema';
/**
*
* Create an account invitations service.
*/
export function createAccountInvitationsService(
client: SupabaseClient<Database>,
) {

View File

@@ -44,7 +44,8 @@ class AccountPerSeatBillingService {
subscription_items !inner (
quantity,
id,
type
type,
variant_id
)
`,
)

View File

@@ -24,7 +24,7 @@
"next": "15.5.4",
"react": "19.1.1",
"react-dom": "19.1.1",
"react-i18next": "^15.7.3"
"react-i18next": "^16.0.0"
},
"dependencies": {
"i18next": "25.5.2",

View File

@@ -24,7 +24,7 @@
"devDependencies": {
"@kit/prettier-config": "workspace:*",
"@kit/tsconfig": "workspace:*",
"@modelcontextprotocol/sdk": "1.18.1",
"@modelcontextprotocol/sdk": "1.18.2",
"@types/node": "^24.5.2",
"postgres": "3.4.7",
"zod": "^3.25.74"

View File

@@ -23,7 +23,7 @@
"@kit/sentry": "workspace:*",
"@kit/shared": "workspace:*",
"@kit/tsconfig": "workspace:*",
"@types/react": "19.1.13",
"@types/react": "19.1.15",
"react": "19.1.1",
"zod": "^3.25.74"
},

View File

@@ -17,7 +17,7 @@
"@kit/eslint-config": "workspace:*",
"@kit/prettier-config": "workspace:*",
"@kit/tsconfig": "workspace:*",
"@types/react": "19.1.13",
"@types/react": "19.1.15",
"react": "19.1.1"
},
"typesVersions": {

View File

@@ -16,15 +16,15 @@
"./config/server": "./src/sentry.client.server.ts"
},
"dependencies": {
"@sentry/nextjs": "^10.14.0",
"import-in-the-middle": "1.14.2"
"@sentry/nextjs": "^10.15.0",
"import-in-the-middle": "1.14.4"
},
"devDependencies": {
"@kit/eslint-config": "workspace:*",
"@kit/monitoring-core": "workspace:*",
"@kit/prettier-config": "workspace:*",
"@kit/tsconfig": "workspace:*",
"@types/react": "19.1.13",
"@types/react": "19.1.15",
"react": "19.1.1"
},
"typesVersions": {

View File

@@ -20,7 +20,7 @@
"@kit/prettier-config": "workspace:*",
"@kit/supabase": "workspace:*",
"@kit/tsconfig": "workspace:*",
"@supabase/supabase-js": "2.57.4",
"@supabase/supabase-js": "2.58.0",
"next": "15.5.4",
"zod": "^3.25.74"
},

View File

@@ -25,8 +25,8 @@
"@kit/tsconfig": "workspace:*",
"@kit/ui": "workspace:*",
"@radix-ui/react-icons": "^1.3.2",
"@supabase/supabase-js": "2.57.4",
"@types/react": "19.1.13",
"@supabase/supabase-js": "2.58.0",
"@types/react": "19.1.15",
"@types/react-dom": "19.1.9",
"react": "19.1.1",
"react-dom": "19.1.1",

684
packages/policies/AGENTS.md Normal file
View File

@@ -0,0 +1,684 @@
# FeaturePolicy API - Registry-Based Policy System
A unified, registry-based foundation for implementing business rules across all Makerkit features.
## Overview
The FeaturePolicy API provides:
- **Registry-based architecture** - centralized policy management with IDs
- **Configuration support** - policies can accept typed configuration objects
- **Stage-aware evaluation** - policies can be filtered by execution stage
- **Immutable contexts** for safe policy evaluation
- **Customer extensibility** - easy to add custom policies without forking
## Quick Start
### 1. Register Policies
```typescript
import { z } from 'zod';
import { allow, createPolicyRegistry, definePolicy, deny } from '@kit/policies';
const registry = createPolicyRegistry();
// Register a basic policy
registry.registerPolicy(
definePolicy({
id: 'email-validation',
stages: ['preliminary', 'submission'],
evaluate: async (context) => {
if (!context.userEmail?.includes('@')) {
return deny({
code: 'INVALID_EMAIL_FORMAT',
message: 'Invalid email format',
remediation: 'Please provide a valid email address',
});
}
return allow();
},
}),
);
// Register a configurable policy
registry.registerPolicy(
definePolicy({
id: 'max-invitations',
configSchema: z.object({
maxInvitations: z.number().positive(),
}),
evaluate: async (context, config = { maxInvitations: 5 }) => {
if (context.invitations.length > config.maxInvitations) {
return deny({
code: 'MAX_INVITATIONS_EXCEEDED',
message: `Cannot invite more than ${config.maxInvitations} members`,
remediation: `Reduce invitations to ${config.maxInvitations} or fewer`,
});
}
return allow();
},
}),
);
```
### 2. Use Policies from Registry
```typescript
import {
createPoliciesFromRegistry,
createPolicyEvaluator,
createPolicyRegistry,
} from '@kit/policies';
const registry = createPolicyRegistry();
// Load policies from registry
const policies = await createPoliciesFromRegistry(registry, [
'email-validation',
'subscription-required',
['max-invitations', { maxInvitations: 5 }], // with configuration
]);
const evaluator = createPolicyEvaluator();
const result = await evaluator.evaluatePolicies(policies, context, 'ALL');
if (!result.allowed) {
console.log('Failed reasons:', result.reasons);
}
```
### 3. Group Policies with Complex Logic
```typescript
// Basic group example
const preliminaryGroup = {
operator: 'ALL' as const,
policies: [emailValidationPolicy, authenticationPolicy],
};
const billingGroup = {
operator: 'ANY' as const,
policies: [subscriptionPolicy, trialPolicy],
};
// Evaluate groups in sequence
const result = await evaluator.evaluateGroups(
[preliminaryGroup, billingGroup],
context,
);
```
## Complex Group Flows
### Real-World Multi-Stage Team Invitation Flow
```typescript
import { createPolicy, createPolicyEvaluator } from '@kit/policies';
// Complex business logic: (Authentication AND Email Validation) AND (Subscription OR Trial) AND Billing Limits
async function validateTeamInvitation(context: InvitationContext) {
const evaluator = createPolicyEvaluator();
// Stage 1: Authentication Requirements (ALL must pass)
const authenticationGroup = {
operator: 'ALL' as const,
policies: [
createPolicy(async (ctx) =>
ctx.userId
? allow({ step: 'authenticated' })
: deny('Authentication required'),
),
createPolicy(async (ctx) =>
ctx.email.includes('@')
? allow({ step: 'email-valid' })
: deny('Valid email required'),
),
createPolicy(async (ctx) =>
ctx.permissions.includes('invite')
? allow({ step: 'permissions' })
: deny('Insufficient permissions'),
),
],
};
// Stage 2: Subscription Validation (ANY sufficient - flexible billing)
const subscriptionGroup = {
operator: 'ANY' as const,
policies: [
createPolicy(async (ctx) =>
ctx.subscription?.active && ctx.subscription.plan === 'enterprise'
? allow({ billing: 'enterprise' })
: deny('Enterprise subscription required'),
),
createPolicy(async (ctx) =>
ctx.subscription?.active && ctx.subscription.plan === 'pro'
? allow({ billing: 'pro' })
: deny('Pro subscription required'),
),
createPolicy(async (ctx) =>
ctx.trial?.active && ctx.trial.daysRemaining > 0
? allow({ billing: 'trial', daysLeft: ctx.trial.daysRemaining })
: deny('Active trial required'),
),
],
};
// Stage 3: Final Constraints (ALL must pass)
const constraintsGroup = {
operator: 'ALL' as const,
policies: [
createPolicy(async (ctx) =>
ctx.team.memberCount < ctx.subscription?.maxMembers
? allow({ constraint: 'member-limit' })
: deny('Member limit exceeded'),
),
createPolicy(async (ctx) =>
ctx.invitations.length <= 10
? allow({ constraint: 'batch-size' })
: deny('Cannot invite more than 10 members at once'),
),
],
};
// Execute all groups sequentially - ALL groups must pass
const result = await evaluator.evaluateGroups(
[authenticationGroup, subscriptionGroup, constraintsGroup],
context,
);
return {
allowed: result.allowed,
reasons: result.reasons,
metadata: {
stagesCompleted: result.results.length,
authenticationPassed: result.results.some(
(r) => r.metadata?.step === 'authenticated',
),
billingType: result.results.find((r) => r.metadata?.billing)?.metadata
?.billing,
constraintsChecked: result.results.some((r) => r.metadata?.constraint),
},
};
}
```
### Middleware-Style Policy Chain
```typescript
// Simulate middleware pattern: Auth → Rate Limiting → Business Logic
async function processApiRequest(context: ApiContext) {
const evaluator = createPoliciesEvaluator();
// Layer 1: Security (ALL required)
const securityLayer = {
operator: 'ALL' as const,
policies: [
createPolicy(async (ctx) =>
ctx.apiKey && ctx.apiKey.length > 0
? allow({ security: 'api-key-valid' })
: deny('API key required'),
),
createPolicy(async (ctx) =>
ctx.rateLimitRemaining > 0
? allow({ security: 'rate-limit-ok' })
: deny('Rate limit exceeded'),
),
createPolicy(async (ctx) =>
!ctx.blacklisted
? allow({ security: 'not-blacklisted' })
: deny('Client is blacklisted'),
),
],
};
// Layer 2: Authorization (ANY sufficient - flexible access levels)
const authorizationLayer = {
operator: 'ANY' as const,
policies: [
createPolicy(async (ctx) =>
ctx.user.role === 'admin'
? allow({ access: 'admin' })
: deny('Admin access denied'),
),
createPolicy(async (ctx) =>
ctx.user.permissions.includes(ctx.requestedResource)
? allow({ access: 'resource-specific' })
: deny('Resource access denied'),
),
createPolicy(async (ctx) =>
ctx.user.subscription?.includes('api-access')
? allow({ access: 'subscription-based' })
: deny('Subscription access denied'),
),
],
};
// Layer 3: Business Rules (ALL required)
const businessLayer = {
operator: 'ALL' as const,
policies: [
createPolicy(async (ctx) =>
ctx.request.size <= ctx.maxRequestSize
? allow({ business: 'size-valid' })
: deny('Request too large'),
),
createPolicy(async (ctx) =>
ctx.user.dailyQuota > ctx.user.dailyUsage
? allow({ business: 'quota-available' })
: deny('Daily quota exceeded'),
),
],
};
return evaluator.evaluateGroups(
[securityLayer, authorizationLayer, businessLayer],
context,
);
}
```
### Complex Nested Logic with Short-Circuiting
```typescript
// Complex scenario: (Premium User OR (Basic User AND Low Usage)) AND Security Checks
async function validateFeatureAccess(context: FeatureContext) {
const evaluator = createPoliciesEvaluator();
// Group 1: User Tier Logic - demonstrates complex OR conditions
const userTierGroup = {
operator: 'ANY' as const,
policies: [
// Premium users get immediate access
createPolicy(async (ctx) =>
ctx.user.plan === 'premium'
? allow({ tier: 'premium', reason: 'premium-user' })
: deny('Not premium user'),
),
// Enterprise users get immediate access
createPolicy(async (ctx) =>
ctx.user.plan === 'enterprise'
? allow({ tier: 'enterprise', reason: 'enterprise-user' })
: deny('Not enterprise user'),
),
// Basic users need additional validation (sub-group logic)
createPolicy(async (ctx) => {
if (ctx.user.plan !== 'basic') {
return deny('Not basic user');
}
// Simulate nested AND logic for basic users
const basicUserRequirements = [
ctx.user.monthlyUsage < 1000,
ctx.user.accountAge > 30, // days
!ctx.user.hasViolations,
];
const allBasicRequirementsMet = basicUserRequirements.every(
(req) => req,
);
return allBasicRequirementsMet
? allow({ tier: 'basic', reason: 'low-usage-basic-user' })
: deny('Basic user requirements not met');
}),
],
};
// Group 2: Security Requirements (ALL must pass)
const securityGroup = {
operator: 'ALL' as const,
policies: [
createPolicy(async (ctx) =>
ctx.user.emailVerified
? allow({ security: 'email-verified' })
: deny('Email verification required'),
),
createPolicy(async (ctx) =>
ctx.user.twoFactorEnabled || ctx.user.plan === 'basic'
? allow({ security: '2fa-compliant' })
: deny('Two-factor authentication required for premium plans'),
),
createPolicy(async (ctx) =>
!ctx.user.suspiciousActivity
? allow({ security: 'activity-clean' })
: deny('Suspicious activity detected'),
),
],
};
return evaluator.evaluateGroups([userTierGroup, securityGroup], context);
}
```
### Dynamic Policy Composition
```typescript
// Dynamically compose policies based on context
async function createContextAwarePolicyFlow(context: DynamicContext) {
const evaluator = createPoliciesEvaluator();
const groups = [];
// Always include base security
const baseSecurityGroup = {
operator: 'ALL' as const,
policies: [
createPolicy(async (ctx) =>
ctx.isAuthenticated ? allow() : deny('Authentication required'),
),
],
};
groups.push(baseSecurityGroup);
// Add user-type specific policies
if (context.user.type === 'admin') {
const adminGroup = {
operator: 'ALL' as const,
policies: [
createPolicy(async (ctx) =>
ctx.user.adminLevel >= ctx.requiredAdminLevel
? allow({ admin: 'level-sufficient' })
: deny('Insufficient admin level'),
),
createPolicy(async (ctx) =>
ctx.user.lastLogin > Date.now() - 24 * 60 * 60 * 1000 // 24 hours
? allow({ admin: 'recent-login' })
: deny('Admin must have logged in within 24 hours'),
),
],
};
groups.push(adminGroup);
}
// Add feature-specific policies based on requested feature
if (context.feature.requiresBilling) {
const billingGroup = {
operator: 'ANY' as const,
policies: [
createPolicy(async (ctx) =>
ctx.subscription?.active
? allow({ billing: 'subscription' })
: deny('Active subscription required'),
),
createPolicy(async (ctx) =>
ctx.credits && ctx.credits > ctx.feature.creditCost
? allow({ billing: 'credits' })
: deny('Insufficient credits'),
),
],
};
groups.push(billingGroup);
}
// Add rate limiting for high-impact features
if (context.feature.highImpact) {
const rateLimitGroup = {
operator: 'ALL' as const,
policies: [
createPolicy(async (ctx) =>
ctx.rateLimit.remaining > 0
? allow({ rateLimit: 'within-limits' })
: deny('Rate limit exceeded for high-impact features'),
),
],
};
groups.push(rateLimitGroup);
}
return evaluator.evaluateGroups(groups, context);
}
```
### Performance-Optimized Large Group Evaluation
```typescript
// Handle large numbers of policies efficiently
async function validateComplexBusinessRules(context: BusinessContext) {
const evaluator = createPoliciesEvaluator({ maxCacheSize: 200 });
// Group policies by evaluation cost and criticality
const criticalFastGroup = {
operator: 'ALL' as const,
policies: [
// Fast critical checks first
createPolicy(async (ctx) =>
ctx.isActive ? allow() : deny('Account inactive'),
),
createPolicy(async (ctx) =>
ctx.hasPermission ? allow() : deny('No permission'),
),
createPolicy(async (ctx) =>
!ctx.isBlocked ? allow() : deny('Account blocked'),
),
],
};
const businessLogicGroup = {
operator: 'ANY' as const,
policies: [
// Complex business rules
createPolicy(async (ctx) => {
// Simulate complex calculation
const score = await calculateRiskScore(ctx);
return score < 0.8
? allow({ risk: 'low' })
: deny('High risk detected');
}),
createPolicy(async (ctx) => {
// Simulate external API call
const verification = await verifyWithThirdParty(ctx);
return verification.success
? allow({ external: 'verified' })
: deny('External verification failed');
}),
],
};
const finalValidationGroup = {
operator: 'ALL' as const,
policies: [
// Final checks after complex logic
createPolicy(async (ctx) =>
ctx.complianceCheck ? allow() : deny('Compliance check failed'),
),
],
};
// Use staged evaluation for better performance
const startTime = Date.now();
const result = await evaluator.evaluateGroups(
[
criticalFastGroup, // Fast critical checks first
businessLogicGroup, // Complex logic only if critical checks pass
finalValidationGroup, // Final validation
],
context,
);
const evaluationTime = Date.now() - startTime;
return {
...result,
performance: {
evaluationTimeMs: evaluationTime,
groupsEvaluated: result.results.length > 0 ? 3 : 1,
},
};
}
// Helper functions for complex examples
async function calculateRiskScore(context: any): Promise<number> {
// Simulate complex risk calculation
await new Promise((resolve) => setTimeout(resolve, 10));
return Math.random();
}
async function verifyWithThirdParty(
context: any,
): Promise<{ success: boolean }> {
// Simulate external API call
await new Promise((resolve) => setTimeout(resolve, 5));
return { success: Math.random() > 0.2 };
}
```
## Advanced Usage
### Configurable Policies
```typescript
// Create policy factories for configuration
const createMaxInvitationsPolicy = (maxInvitations: number) =>
createPolicy(async (context) => {
if (context.invitations.length > maxInvitations) {
return deny({
code: 'MAX_INVITATIONS_EXCEEDED',
message: `Cannot invite more than ${maxInvitations} members`,
remediation: `Reduce invitations to ${maxInvitations} or fewer`,
});
}
return allow();
});
// Use with different configurations
const strictPolicy = createMaxInvitationsPolicy(1);
const standardPolicy = createMaxInvitationsPolicy(5);
const permissivePolicy = createMaxInvitationsPolicy(25);
```
### Feature-Specific evaluators
```typescript
// Create feature-specific evaluator with preset configurations
export function createInvitationevaluator(
preset: 'strict' | 'standard' | 'permissive',
) {
const configs = {
strict: { maxInvitationsPerBatch: 1 },
standard: { maxInvitationsPerBatch: 5 },
permissive: { maxInvitationsPerBatch: 25 },
};
const config = configs[preset];
return {
async validateInvitations(context: InvitationContext) {
const policies = [
emailValidationPolicy,
createMaxInvitationsPolicy(config.maxInvitationsPerBatch),
subscriptionRequiredPolicy,
paddleBillingPolicy,
];
const evaluator = createPoliciesEvaluator();
return evaluator.evaluatePolicies(policies, context, 'ALL');
},
};
}
// Usage
const evaluator = createInvitationevaluator('standard');
const result = await evaluator.validateInvitations(context);
```
### Error Handling
```typescript
const result = await evaluator.evaluate();
if (!result.allowed) {
result.reasons.forEach((reason) => {
console.log(`Policy ${reason.policyId} failed:`);
console.log(` Code: ${reason.code}`);
console.log(` Message: ${reason.message}`);
if (reason.remediation) {
console.log(` Fix: ${reason.remediation}`);
}
});
}
```
### 1. Register Complex Policy with Configuration
```typescript
import { createPolicyRegistry, definePolicy } from '@kit/policies';
const registry = createPolicyRegistry();
const customConfigurablePolicy = definePolicy({
id: 'custom-domain-check',
configSchema: z.object({
allowedDomains: z.array(z.string()),
strictMode: z.boolean(),
}),
evaluate: async (context, config) => {
const emailDomain = context.userEmail?.split('@')[1];
if (config?.strictMode && !config.allowedDomains.includes(emailDomain)) {
return deny({
code: 'DOMAIN_NOT_ALLOWED',
message: `Email domain ${emailDomain} is not in the allowed list`,
remediation: 'Use an email from an approved domain',
});
}
return allow();
},
});
registry.registerPolicy(customConfigurablePolicy);
```
## Key Concepts
### Group Operators
- **`ALL` (AND logic)**: All policies in the group must pass
- **Short-circuits on first failure** for performance
- Use for mandatory requirements where every condition must be met
- Example: Authentication AND permissions AND rate limiting
- **`ANY` (OR logic)**: At least one policy in the group must pass
- **Short-circuits on first success** for performance
- Use for flexible requirements where multiple options are acceptable
- Example: Premium subscription OR trial access OR admin override
### Group Evaluation Flow
1. **Sequential Group Processing**: Groups are evaluated in order
2. **All Groups Must Pass**: If any group fails, entire evaluation fails
3. **Short-Circuiting**: Stops on first group failure for performance
4. **Metadata Preservation**: All policy results and metadata are collected
### Performance Considerations
- **Order groups by criticality**: Put fast, critical checks first
- **Use caching**: Configure `maxCacheSize` for frequently used policies
- **Group by evaluation cost**: Separate expensive operations
- **Monitor evaluation time**: Track performance for optimization
## Stage-Aware Evaluation
Policies can be filtered by execution stage. This is useful for running a subset of policies depending on the situation:
```typescript
// Only run preliminary checks
const prelimResult = await evaluator.evaluate(
registry,
context,
'ALL',
'preliminary',
);
// Run submission validation
const submitResult = await evaluator.evaluate(
registry,
context,
'ALL',
'submission',
);
// Run all applicable policies
const fullResult = await evaluator.evaluate(registry, context, 'ALL');
```

684
packages/policies/CLAUDE.md Normal file
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# FeaturePolicy API - Registry-Based Policy System
A unified, registry-based foundation for implementing business rules across all Makerkit features.
## Overview
The FeaturePolicy API provides:
- **Registry-based architecture** - centralized policy management with IDs
- **Configuration support** - policies can accept typed configuration objects
- **Stage-aware evaluation** - policies can be filtered by execution stage
- **Immutable contexts** for safe policy evaluation
- **Customer extensibility** - easy to add custom policies without forking
## Quick Start
### 1. Register Policies
```typescript
import { z } from 'zod';
import { allow, createPolicyRegistry, definePolicy, deny } from '@kit/policies';
const registry = createPolicyRegistry();
// Register a basic policy
registry.registerPolicy(
definePolicy({
id: 'email-validation',
stages: ['preliminary', 'submission'],
evaluate: async (context) => {
if (!context.userEmail?.includes('@')) {
return deny({
code: 'INVALID_EMAIL_FORMAT',
message: 'Invalid email format',
remediation: 'Please provide a valid email address',
});
}
return allow();
},
}),
);
// Register a configurable policy
registry.registerPolicy(
definePolicy({
id: 'max-invitations',
configSchema: z.object({
maxInvitations: z.number().positive(),
}),
evaluate: async (context, config = { maxInvitations: 5 }) => {
if (context.invitations.length > config.maxInvitations) {
return deny({
code: 'MAX_INVITATIONS_EXCEEDED',
message: `Cannot invite more than ${config.maxInvitations} members`,
remediation: `Reduce invitations to ${config.maxInvitations} or fewer`,
});
}
return allow();
},
}),
);
```
### 2. Use Policies from Registry
```typescript
import {
createPoliciesFromRegistry,
createPolicyEvaluator,
createPolicyRegistry,
} from '@kit/policies';
const registry = createPolicyRegistry();
// Load policies from registry
const policies = await createPoliciesFromRegistry(registry, [
'email-validation',
'subscription-required',
['max-invitations', { maxInvitations: 5 }], // with configuration
]);
const evaluator = createPolicyEvaluator();
const result = await evaluator.evaluatePolicies(policies, context, 'ALL');
if (!result.allowed) {
console.log('Failed reasons:', result.reasons);
}
```
### 3. Group Policies with Complex Logic
```typescript
// Basic group example
const preliminaryGroup = {
operator: 'ALL' as const,
policies: [emailValidationPolicy, authenticationPolicy],
};
const billingGroup = {
operator: 'ANY' as const,
policies: [subscriptionPolicy, trialPolicy],
};
// Evaluate groups in sequence
const result = await evaluator.evaluateGroups(
[preliminaryGroup, billingGroup],
context,
);
```
## Complex Group Flows
### Real-World Multi-Stage Team Invitation Flow
```typescript
import { createPolicy, createPolicyEvaluator } from '@kit/policies';
// Complex business logic: (Authentication AND Email Validation) AND (Subscription OR Trial) AND Billing Limits
async function validateTeamInvitation(context: InvitationContext) {
const evaluator = createPolicyEvaluator();
// Stage 1: Authentication Requirements (ALL must pass)
const authenticationGroup = {
operator: 'ALL' as const,
policies: [
createPolicy(async (ctx) =>
ctx.userId
? allow({ step: 'authenticated' })
: deny('Authentication required'),
),
createPolicy(async (ctx) =>
ctx.email.includes('@')
? allow({ step: 'email-valid' })
: deny('Valid email required'),
),
createPolicy(async (ctx) =>
ctx.permissions.includes('invite')
? allow({ step: 'permissions' })
: deny('Insufficient permissions'),
),
],
};
// Stage 2: Subscription Validation (ANY sufficient - flexible billing)
const subscriptionGroup = {
operator: 'ANY' as const,
policies: [
createPolicy(async (ctx) =>
ctx.subscription?.active && ctx.subscription.plan === 'enterprise'
? allow({ billing: 'enterprise' })
: deny('Enterprise subscription required'),
),
createPolicy(async (ctx) =>
ctx.subscription?.active && ctx.subscription.plan === 'pro'
? allow({ billing: 'pro' })
: deny('Pro subscription required'),
),
createPolicy(async (ctx) =>
ctx.trial?.active && ctx.trial.daysRemaining > 0
? allow({ billing: 'trial', daysLeft: ctx.trial.daysRemaining })
: deny('Active trial required'),
),
],
};
// Stage 3: Final Constraints (ALL must pass)
const constraintsGroup = {
operator: 'ALL' as const,
policies: [
createPolicy(async (ctx) =>
ctx.team.memberCount < ctx.subscription?.maxMembers
? allow({ constraint: 'member-limit' })
: deny('Member limit exceeded'),
),
createPolicy(async (ctx) =>
ctx.invitations.length <= 10
? allow({ constraint: 'batch-size' })
: deny('Cannot invite more than 10 members at once'),
),
],
};
// Execute all groups sequentially - ALL groups must pass
const result = await evaluator.evaluateGroups(
[authenticationGroup, subscriptionGroup, constraintsGroup],
context,
);
return {
allowed: result.allowed,
reasons: result.reasons,
metadata: {
stagesCompleted: result.results.length,
authenticationPassed: result.results.some(
(r) => r.metadata?.step === 'authenticated',
),
billingType: result.results.find((r) => r.metadata?.billing)?.metadata
?.billing,
constraintsChecked: result.results.some((r) => r.metadata?.constraint),
},
};
}
```
### Middleware-Style Policy Chain
```typescript
// Simulate middleware pattern: Auth → Rate Limiting → Business Logic
async function processApiRequest(context: ApiContext) {
const evaluator = createPoliciesEvaluator();
// Layer 1: Security (ALL required)
const securityLayer = {
operator: 'ALL' as const,
policies: [
createPolicy(async (ctx) =>
ctx.apiKey && ctx.apiKey.length > 0
? allow({ security: 'api-key-valid' })
: deny('API key required'),
),
createPolicy(async (ctx) =>
ctx.rateLimitRemaining > 0
? allow({ security: 'rate-limit-ok' })
: deny('Rate limit exceeded'),
),
createPolicy(async (ctx) =>
!ctx.blacklisted
? allow({ security: 'not-blacklisted' })
: deny('Client is blacklisted'),
),
],
};
// Layer 2: Authorization (ANY sufficient - flexible access levels)
const authorizationLayer = {
operator: 'ANY' as const,
policies: [
createPolicy(async (ctx) =>
ctx.user.role === 'admin'
? allow({ access: 'admin' })
: deny('Admin access denied'),
),
createPolicy(async (ctx) =>
ctx.user.permissions.includes(ctx.requestedResource)
? allow({ access: 'resource-specific' })
: deny('Resource access denied'),
),
createPolicy(async (ctx) =>
ctx.user.subscription?.includes('api-access')
? allow({ access: 'subscription-based' })
: deny('Subscription access denied'),
),
],
};
// Layer 3: Business Rules (ALL required)
const businessLayer = {
operator: 'ALL' as const,
policies: [
createPolicy(async (ctx) =>
ctx.request.size <= ctx.maxRequestSize
? allow({ business: 'size-valid' })
: deny('Request too large'),
),
createPolicy(async (ctx) =>
ctx.user.dailyQuota > ctx.user.dailyUsage
? allow({ business: 'quota-available' })
: deny('Daily quota exceeded'),
),
],
};
return evaluator.evaluateGroups(
[securityLayer, authorizationLayer, businessLayer],
context,
);
}
```
### Complex Nested Logic with Short-Circuiting
```typescript
// Complex scenario: (Premium User OR (Basic User AND Low Usage)) AND Security Checks
async function validateFeatureAccess(context: FeatureContext) {
const evaluator = createPoliciesEvaluator();
// Group 1: User Tier Logic - demonstrates complex OR conditions
const userTierGroup = {
operator: 'ANY' as const,
policies: [
// Premium users get immediate access
createPolicy(async (ctx) =>
ctx.user.plan === 'premium'
? allow({ tier: 'premium', reason: 'premium-user' })
: deny('Not premium user'),
),
// Enterprise users get immediate access
createPolicy(async (ctx) =>
ctx.user.plan === 'enterprise'
? allow({ tier: 'enterprise', reason: 'enterprise-user' })
: deny('Not enterprise user'),
),
// Basic users need additional validation (sub-group logic)
createPolicy(async (ctx) => {
if (ctx.user.plan !== 'basic') {
return deny('Not basic user');
}
// Simulate nested AND logic for basic users
const basicUserRequirements = [
ctx.user.monthlyUsage < 1000,
ctx.user.accountAge > 30, // days
!ctx.user.hasViolations,
];
const allBasicRequirementsMet = basicUserRequirements.every(
(req) => req,
);
return allBasicRequirementsMet
? allow({ tier: 'basic', reason: 'low-usage-basic-user' })
: deny('Basic user requirements not met');
}),
],
};
// Group 2: Security Requirements (ALL must pass)
const securityGroup = {
operator: 'ALL' as const,
policies: [
createPolicy(async (ctx) =>
ctx.user.emailVerified
? allow({ security: 'email-verified' })
: deny('Email verification required'),
),
createPolicy(async (ctx) =>
ctx.user.twoFactorEnabled || ctx.user.plan === 'basic'
? allow({ security: '2fa-compliant' })
: deny('Two-factor authentication required for premium plans'),
),
createPolicy(async (ctx) =>
!ctx.user.suspiciousActivity
? allow({ security: 'activity-clean' })
: deny('Suspicious activity detected'),
),
],
};
return evaluator.evaluateGroups([userTierGroup, securityGroup], context);
}
```
### Dynamic Policy Composition
```typescript
// Dynamically compose policies based on context
async function createContextAwarePolicyFlow(context: DynamicContext) {
const evaluator = createPoliciesEvaluator();
const groups = [];
// Always include base security
const baseSecurityGroup = {
operator: 'ALL' as const,
policies: [
createPolicy(async (ctx) =>
ctx.isAuthenticated ? allow() : deny('Authentication required'),
),
],
};
groups.push(baseSecurityGroup);
// Add user-type specific policies
if (context.user.type === 'admin') {
const adminGroup = {
operator: 'ALL' as const,
policies: [
createPolicy(async (ctx) =>
ctx.user.adminLevel >= ctx.requiredAdminLevel
? allow({ admin: 'level-sufficient' })
: deny('Insufficient admin level'),
),
createPolicy(async (ctx) =>
ctx.user.lastLogin > Date.now() - 24 * 60 * 60 * 1000 // 24 hours
? allow({ admin: 'recent-login' })
: deny('Admin must have logged in within 24 hours'),
),
],
};
groups.push(adminGroup);
}
// Add feature-specific policies based on requested feature
if (context.feature.requiresBilling) {
const billingGroup = {
operator: 'ANY' as const,
policies: [
createPolicy(async (ctx) =>
ctx.subscription?.active
? allow({ billing: 'subscription' })
: deny('Active subscription required'),
),
createPolicy(async (ctx) =>
ctx.credits && ctx.credits > ctx.feature.creditCost
? allow({ billing: 'credits' })
: deny('Insufficient credits'),
),
],
};
groups.push(billingGroup);
}
// Add rate limiting for high-impact features
if (context.feature.highImpact) {
const rateLimitGroup = {
operator: 'ALL' as const,
policies: [
createPolicy(async (ctx) =>
ctx.rateLimit.remaining > 0
? allow({ rateLimit: 'within-limits' })
: deny('Rate limit exceeded for high-impact features'),
),
],
};
groups.push(rateLimitGroup);
}
return evaluator.evaluateGroups(groups, context);
}
```
### Performance-Optimized Large Group Evaluation
```typescript
// Handle large numbers of policies efficiently
async function validateComplexBusinessRules(context: BusinessContext) {
const evaluator = createPoliciesEvaluator({ maxCacheSize: 200 });
// Group policies by evaluation cost and criticality
const criticalFastGroup = {
operator: 'ALL' as const,
policies: [
// Fast critical checks first
createPolicy(async (ctx) =>
ctx.isActive ? allow() : deny('Account inactive'),
),
createPolicy(async (ctx) =>
ctx.hasPermission ? allow() : deny('No permission'),
),
createPolicy(async (ctx) =>
!ctx.isBlocked ? allow() : deny('Account blocked'),
),
],
};
const businessLogicGroup = {
operator: 'ANY' as const,
policies: [
// Complex business rules
createPolicy(async (ctx) => {
// Simulate complex calculation
const score = await calculateRiskScore(ctx);
return score < 0.8
? allow({ risk: 'low' })
: deny('High risk detected');
}),
createPolicy(async (ctx) => {
// Simulate external API call
const verification = await verifyWithThirdParty(ctx);
return verification.success
? allow({ external: 'verified' })
: deny('External verification failed');
}),
],
};
const finalValidationGroup = {
operator: 'ALL' as const,
policies: [
// Final checks after complex logic
createPolicy(async (ctx) =>
ctx.complianceCheck ? allow() : deny('Compliance check failed'),
),
],
};
// Use staged evaluation for better performance
const startTime = Date.now();
const result = await evaluator.evaluateGroups(
[
criticalFastGroup, // Fast critical checks first
businessLogicGroup, // Complex logic only if critical checks pass
finalValidationGroup, // Final validation
],
context,
);
const evaluationTime = Date.now() - startTime;
return {
...result,
performance: {
evaluationTimeMs: evaluationTime,
groupsEvaluated: result.results.length > 0 ? 3 : 1,
},
};
}
// Helper functions for complex examples
async function calculateRiskScore(context: any): Promise<number> {
// Simulate complex risk calculation
await new Promise((resolve) => setTimeout(resolve, 10));
return Math.random();
}
async function verifyWithThirdParty(
context: any,
): Promise<{ success: boolean }> {
// Simulate external API call
await new Promise((resolve) => setTimeout(resolve, 5));
return { success: Math.random() > 0.2 };
}
```
## Advanced Usage
### Configurable Policies
```typescript
// Create policy factories for configuration
const createMaxInvitationsPolicy = (maxInvitations: number) =>
createPolicy(async (context) => {
if (context.invitations.length > maxInvitations) {
return deny({
code: 'MAX_INVITATIONS_EXCEEDED',
message: `Cannot invite more than ${maxInvitations} members`,
remediation: `Reduce invitations to ${maxInvitations} or fewer`,
});
}
return allow();
});
// Use with different configurations
const strictPolicy = createMaxInvitationsPolicy(1);
const standardPolicy = createMaxInvitationsPolicy(5);
const permissivePolicy = createMaxInvitationsPolicy(25);
```
### Feature-Specific evaluators
```typescript
// Create feature-specific evaluator with preset configurations
export function createInvitationevaluator(
preset: 'strict' | 'standard' | 'permissive',
) {
const configs = {
strict: { maxInvitationsPerBatch: 1 },
standard: { maxInvitationsPerBatch: 5 },
permissive: { maxInvitationsPerBatch: 25 },
};
const config = configs[preset];
return {
async validateInvitations(context: InvitationContext) {
const policies = [
emailValidationPolicy,
createMaxInvitationsPolicy(config.maxInvitationsPerBatch),
subscriptionRequiredPolicy,
paddleBillingPolicy,
];
const evaluator = createPoliciesEvaluator();
return evaluator.evaluatePolicies(policies, context, 'ALL');
},
};
}
// Usage
const evaluator = createInvitationevaluator('standard');
const result = await evaluator.validateInvitations(context);
```
### Error Handling
```typescript
const result = await evaluator.evaluate();
if (!result.allowed) {
result.reasons.forEach((reason) => {
console.log(`Policy ${reason.policyId} failed:`);
console.log(` Code: ${reason.code}`);
console.log(` Message: ${reason.message}`);
if (reason.remediation) {
console.log(` Fix: ${reason.remediation}`);
}
});
}
```
### 1. Register Complex Policy with Configuration
```typescript
import { createPolicyRegistry, definePolicy } from '@kit/policies';
const registry = createPolicyRegistry();
const customConfigurablePolicy = definePolicy({
id: 'custom-domain-check',
configSchema: z.object({
allowedDomains: z.array(z.string()),
strictMode: z.boolean(),
}),
evaluate: async (context, config) => {
const emailDomain = context.userEmail?.split('@')[1];
if (config?.strictMode && !config.allowedDomains.includes(emailDomain)) {
return deny({
code: 'DOMAIN_NOT_ALLOWED',
message: `Email domain ${emailDomain} is not in the allowed list`,
remediation: 'Use an email from an approved domain',
});
}
return allow();
},
});
registry.registerPolicy(customConfigurablePolicy);
```
## Key Concepts
### Group Operators
- **`ALL` (AND logic)**: All policies in the group must pass
- **Short-circuits on first failure** for performance
- Use for mandatory requirements where every condition must be met
- Example: Authentication AND permissions AND rate limiting
- **`ANY` (OR logic)**: At least one policy in the group must pass
- **Short-circuits on first success** for performance
- Use for flexible requirements where multiple options are acceptable
- Example: Premium subscription OR trial access OR admin override
### Group Evaluation Flow
1. **Sequential Group Processing**: Groups are evaluated in order
2. **All Groups Must Pass**: If any group fails, entire evaluation fails
3. **Short-Circuiting**: Stops on first group failure for performance
4. **Metadata Preservation**: All policy results and metadata are collected
### Performance Considerations
- **Order groups by criticality**: Put fast, critical checks first
- **Use caching**: Configure `maxCacheSize` for frequently used policies
- **Group by evaluation cost**: Separate expensive operations
- **Monitor evaluation time**: Track performance for optimization
## Stage-Aware Evaluation
Policies can be filtered by execution stage. This is useful for running a subset of policies depending on the situation:
```typescript
// Only run preliminary checks
const prelimResult = await evaluator.evaluate(
registry,
context,
'ALL',
'preliminary',
);
// Run submission validation
const submitResult = await evaluator.evaluate(
registry,
context,
'ALL',
'submission',
);
// Run all applicable policies
const fullResult = await evaluator.evaluate(registry, context, 'ALL');
```

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import eslintConfigBase from '@kit/eslint-config/base.js';
export default eslintConfigBase;

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export * from './src';

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{
"name": "@kit/policies",
"private": true,
"version": "0.1.0",
"exports": {
".": "./index.ts"
},
"typesVersions": {
"*": {
"*": [
"src/*"
]
}
},
"scripts": {
"clean": "rm -rf .turbo node_modules",
"lint": "eslint .",
"format": "prettier --check \"**/*.{mjs,ts,md,json}\"",
"typecheck": "tsc --noEmit"
},
"devDependencies": {
"@kit/eslint-config": "workspace:*",
"@kit/prettier-config": "workspace:*",
"@kit/shared": "workspace:*",
"@kit/tsconfig": "workspace:*",
"zod": "^3.25.74"
},
"prettier": "@kit/prettier-config"
}

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import type { z } from 'zod';
import type { PolicyContext, PolicyResult, PolicyStage } from './types';
/**
* Error code for structured policy failures
*/
export interface PolicyErrorCode {
/** Machine-readable error code */
code: string;
/** Human-readable error message */
message: string;
/** Optional remediation instructions */
remediation?: string;
/** Additional metadata */
metadata?: Record<string, unknown>;
}
/**
* Enhanced policy result with structured error information
*/
export interface PolicyReason extends PolicyErrorCode {
/** Policy ID that generated this reason */
policyId: string;
/** Stage at which this reason was generated */
stage?: PolicyStage;
}
/**
* Policy evaluator function with immutable context
*/
export interface PolicyEvaluator<TContext extends PolicyContext> {
/** Evaluate the policy for a specific stage */
evaluate(stage?: PolicyStage): Promise<PolicyResult>;
/** Get the immutable context */
getContext(): Readonly<TContext>;
}
/**
* Policy definition factory configuration
*/
export interface FeaturePolicyDefinition<
TContext extends PolicyContext = PolicyContext,
TConfig = unknown,
> {
/** Unique policy identifier */
id: string;
/** Optional stages this policy applies to */
stages?: PolicyStage[];
/** Optional configuration schema for validation */
configSchema?: z.ZodType<TConfig>;
/** Factory function to create evaluator instances */
create(context: TContext, config?: TConfig): PolicyEvaluator<TContext>;
}
/**
* Helper function to create a successful policy result
*/
export function allow(metadata?: Record<string, unknown>): PolicyResult {
return {
allowed: true,
metadata,
};
}
/**
* Helper function to create a failed policy result with structured error
*/
export function deny(error: PolicyErrorCode): PolicyResult {
return {
allowed: false,
reason: error.message,
metadata: {
code: error.code,
remediation: error.remediation,
...error.metadata,
},
};
}
/**
* Deep freeze an object and all its nested properties
*/
function deepFreeze<T>(obj: T, visited = new WeakSet()): Readonly<T> {
// Prevent infinite recursion with circular references
if (visited.has(obj as object)) {
return obj;
}
visited.add(obj as object);
// Get all property names
const propNames = Reflect.ownKeys(obj as object);
// Freeze properties before freezing self
for (const name of propNames) {
const value = (obj as Record<string, unknown>)[name as string];
if ((value && typeof value === 'object') || typeof value === 'function') {
deepFreeze(value, visited);
}
}
return Object.freeze(obj);
}
/**
* Safe cloning that handles functions and other non-cloneable objects
*/
function safeClone<T>(obj: T): T {
try {
return structuredClone(obj);
} catch {
// If structuredClone fails (e.g., due to functions), create a shallow clone
// and recursively clone cloneable properties
if (obj && typeof obj === 'object') {
const cloned = Array.isArray(obj) ? ([] as unknown as T) : ({} as T);
for (const [key, value] of Object.entries(obj)) {
try {
// Try to clone individual properties
// eslint-disable-next-line @typescript-eslint/no-explicit-any
(cloned as any)[key] = structuredClone(value);
} catch {
// If individual property can't be cloned (like functions), keep as-is
// eslint-disable-next-line @typescript-eslint/no-explicit-any
(cloned as any)[key] = value;
}
}
return cloned;
}
// For primitives or non-cloneable objects, return as-is
return obj;
}
}
/**
* Creates an immutable context wrapper
*/
function createImmutableContext<T extends PolicyContext>(
context: T,
): Readonly<T> {
// Safely clone the context, handling functions and other edge cases
const cloned = safeClone(context);
// Deep freeze the object to make it immutable
return deepFreeze(cloned);
}
/**
* Factory function to define a policy with metadata and configuration
*/
export function definePolicy<
TContext extends PolicyContext = PolicyContext,
TConfig = unknown,
>(config: {
/** Unique policy identifier */
id: string;
/** Optional stages this policy applies to */
stages?: PolicyStage[];
/** Optional configuration schema for validation */
configSchema?: z.ZodType<TConfig>;
/** Policy implementation function */
evaluate: (
context: Readonly<TContext>,
config?: TConfig,
stage?: PolicyStage,
) => Promise<PolicyResult>;
}) {
return {
id: config.id,
stages: config.stages,
configSchema: config.configSchema,
create(context: TContext, policyConfig?: TConfig) {
// Validate configuration if schema is provided
if (config.configSchema && policyConfig !== undefined) {
const validation = config.configSchema.safeParse(policyConfig);
if (!validation.success) {
throw new Error(
`Invalid configuration for policy "${config.id}": ${validation.error.message}`,
);
}
}
// Create immutable context
const immutableContext = createImmutableContext(context);
return {
async evaluate(stage?: PolicyStage) {
// Check if this policy should run at this stage
if (stage && config.stages && !config.stages.includes(stage)) {
return allow({
skipped: true,
reason: `Policy not applicable for stage: ${stage}`,
});
}
try {
const result = await config.evaluate(
immutableContext,
policyConfig,
stage,
);
// Ensure metadata includes policy ID and stage
return {
...result,
metadata: {
policyId: config.id,
stage,
...result.metadata,
},
};
} catch (error) {
return deny({
code: 'POLICY_EVALUATION_ERROR',
message:
error instanceof Error
? error.message
: 'Policy evaluation failed',
metadata: {
policyId: config.id,
stage,
error: error instanceof Error ? error.message : 'Unknown error',
},
});
}
},
getContext() {
return immutableContext;
},
};
},
};
}

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import type { FeaturePolicyDefinition, PolicyErrorCode } from './declarative';
import type { PolicyRegistry } from './registry';
import type { PolicyContext, PolicyResult, PolicyStage } from './types';
const OPERATORS = {
ALL: 'ALL' as const,
ANY: 'ANY' as const,
};
type Operator = (typeof OPERATORS)[keyof typeof OPERATORS];
/**
* Simple policy function type
*/
export type PolicyFunction<TContext extends PolicyContext = PolicyContext> = (
context: Readonly<TContext>,
stage?: PolicyStage,
) => Promise<PolicyResult>;
/**
* Policy group - just an array of policies with an operator
*/
export interface PolicyGroup<TContext extends PolicyContext = PolicyContext> {
operator: Operator;
policies: PolicyFunction<TContext>[];
}
/**
* Evaluation result
*/
export interface EvaluationResult {
allowed: boolean;
reasons: string[];
results: PolicyResult[];
}
/**
* LRU Cache for policy definitions with size limit
*/
class LRUCache<K, V> {
private cache = new Map<K, V>();
private maxSize: number;
constructor(maxSize: number = 100) {
this.maxSize = maxSize;
}
get(key: K): V | undefined {
const value = this.cache.get(key);
if (value !== undefined) {
// Move to end (most recently used)
this.cache.delete(key);
this.cache.set(key, value);
}
return value;
}
set(key: K, value: V): void {
if (this.cache.has(key)) {
this.cache.delete(key);
} else if (this.cache.size >= this.maxSize) {
// Remove least recently used (first entry)
const firstKey = this.cache.keys().next().value;
if (firstKey) {
this.cache.delete(firstKey);
}
}
this.cache.set(key, value);
}
clear(): void {
this.cache.clear();
}
size(): number {
return this.cache.size;
}
}
export class PoliciesEvaluator<TContext extends PolicyContext = PolicyContext> {
// Use WeakMap for registry references to allow garbage collection
private registryPolicyCache = new WeakMap<
PolicyRegistry,
LRUCache<string, FeaturePolicyDefinition<TContext>>
>();
private readonly maxCacheSize: number;
constructor(options?: { maxCacheSize?: number }) {
this.maxCacheSize = options?.maxCacheSize ?? 100;
}
private async getCachedPolicy(
registry: PolicyRegistry,
policyId: string,
): Promise<FeaturePolicyDefinition<TContext> | undefined> {
if (!this.registryPolicyCache.has(registry)) {
this.registryPolicyCache.set(registry, new LRUCache(this.maxCacheSize));
}
const cache = this.registryPolicyCache.get(registry)!;
let definition = cache.get(policyId);
if (!definition) {
definition = await registry.getPolicy<TContext>(policyId);
if (definition) {
cache.set(policyId, definition);
}
}
return definition;
}
/**
* Clear all cached policies (useful for testing or memory management)
*/
clearCache(): void {
// Create new WeakMap to clear all references
this.registryPolicyCache = new WeakMap();
}
async hasPoliciesForStage(
registry: PolicyRegistry,
stage?: PolicyStage,
): Promise<boolean> {
const policyIds = registry.listPolicies();
for (const policyId of policyIds) {
const definition = await this.getCachedPolicy(registry, policyId);
if (!definition) {
continue;
}
if (!stage) {
return true;
}
if (!definition.stages) {
return true;
}
if (definition.stages.includes(stage)) {
return true;
}
}
return false;
}
/**
* Evaluate a registry with support for stages and AND/OR logic
*/
async evaluate(
registry: PolicyRegistry,
context: TContext,
operator: Operator = OPERATORS.ALL,
stage?: PolicyStage,
): Promise<EvaluationResult> {
const results: PolicyResult[] = [];
const reasons: string[] = [];
const policyIds = registry.listPolicies();
for (const policyId of policyIds) {
const definition = await this.getCachedPolicy(registry, policyId);
if (!definition) {
continue;
}
if (stage && definition.stages && !definition.stages.includes(stage)) {
continue;
}
const evaluator = definition.create(context);
const result = await evaluator.evaluate(stage);
results.push(result);
if (!result.allowed && result.reason) {
reasons.push(result.reason);
}
if (operator === OPERATORS.ALL && !result.allowed) {
return { allowed: false, reasons, results };
}
if (operator === OPERATORS.ANY && result.allowed) {
return { allowed: true, reasons: [], results };
}
}
// Handle edge case: empty policy list with ANY operator
if (results.length === 0 && operator === OPERATORS.ANY) {
return {
allowed: false,
reasons: ['No policies matched the criteria'],
results: [],
};
}
const allowed =
operator === OPERATORS.ALL
? results.every((r) => r.allowed)
: results.some((r) => r.allowed);
return { allowed, reasons: allowed ? [] : reasons, results };
}
/**
* Evaluate a single group of policies
*/
async evaluateGroup(
group: PolicyGroup<TContext>,
context: TContext,
stage?: PolicyStage,
): Promise<EvaluationResult> {
const results: PolicyResult[] = [];
const reasons: string[] = [];
for (const policy of group.policies) {
const result = await policy(Object.freeze({ ...context }), stage);
results.push(result);
if (!result.allowed && result.reason) {
reasons.push(result.reason);
}
// Short-circuit logic
if (group.operator === OPERATORS.ALL && !result.allowed) {
return {
allowed: false,
reasons,
results,
};
}
if (group.operator === OPERATORS.ANY && result.allowed) {
return {
allowed: true,
reasons: [],
results,
};
}
}
// Final evaluation
const allowed =
group.operator === OPERATORS.ALL
? results.every((r) => r.allowed)
: results.some((r) => r.allowed);
return {
allowed,
reasons: allowed ? [] : reasons,
results,
};
}
/**
* Evaluate multiple groups in sequence
*/
async evaluateGroups(
groups: PolicyGroup<TContext>[],
context: TContext,
stage?: PolicyStage,
): Promise<EvaluationResult> {
const allResults: PolicyResult[] = [];
const allReasons: string[] = [];
for (const group of groups) {
const groupResult = await this.evaluateGroup(group, context, stage);
allResults.push(...groupResult.results);
allReasons.push(...groupResult.reasons);
// Stop on first failure
if (!groupResult.allowed) {
return {
allowed: false,
reasons: allReasons,
results: allResults,
};
}
}
return {
allowed: true,
reasons: [],
results: allResults,
};
}
/**
* Evaluate a simple array of policies with ALL/ANY logic
*/
async evaluatePolicies(
policies: PolicyFunction<TContext>[],
context: TContext,
operator: Operator = OPERATORS.ALL,
stage?: PolicyStage,
) {
return this.evaluateGroup({ operator, policies }, context, stage);
}
}
/**
* Helper to create a policy function
*/
export function createPolicy<TContext extends PolicyContext = PolicyContext>(
evaluate: (
context: Readonly<TContext>,
stage?: PolicyStage,
) => Promise<PolicyResult>,
): PolicyFunction<TContext> {
return evaluate;
}
/**
* Helper policy results
*/
export const allow = (metadata?: Record<string, unknown>): PolicyResult => ({
allowed: true,
metadata,
});
// Function overloads for deny() to support both string and structured errors
export function deny(
reason: string,
metadata?: Record<string, unknown>,
): PolicyResult;
export function deny(error: PolicyErrorCode): PolicyResult;
export function deny(
reasonOrError: string | PolicyErrorCode,
metadata?: Record<string, unknown>,
): PolicyResult {
if (typeof reasonOrError === 'string') {
return {
allowed: false,
reason: reasonOrError,
metadata,
};
} else {
return {
allowed: false,
reason: reasonOrError.message,
metadata: {
code: reasonOrError.code,
remediation: reasonOrError.remediation,
...reasonOrError.metadata,
},
};
}
}
/**
* Create a policies evaluator with optional configuration
*/
export function createPoliciesEvaluator<
TContext extends PolicyContext = PolicyContext,
>(options?: { maxCacheSize?: number }) {
return new PoliciesEvaluator<TContext>(options);
}
/**
* Convert a registry-based policy to a simple policy function
*/
export async function createPolicyFromRegistry<
TContext extends PolicyContext = PolicyContext,
>(registry: PolicyRegistry, policyId: string, config?: unknown) {
const definition = await registry.getPolicy<TContext>(policyId);
return async (context: Readonly<TContext>, stage?: PolicyStage) => {
const evaluator = definition.create(context as TContext, config);
return evaluator.evaluate(stage);
};
}
/**
* Create multiple policy functions from registry policy IDs
*/
export async function createPoliciesFromRegistry<
TContext extends PolicyContext = PolicyContext,
>(registry: PolicyRegistry, policySpecs: Array<string | [string, unknown]>) {
const policies: PolicyFunction<TContext>[] = [];
for (const spec of policySpecs) {
if (typeof spec === 'string') {
// Simple policy ID
policies.push(await createPolicyFromRegistry(registry, spec));
} else {
// Policy ID with config
const [policyId, config] = spec;
policies.push(await createPolicyFromRegistry(registry, policyId, config));
}
}
return policies;
}

View File

@@ -0,0 +1,32 @@
// Export core types and interfaces
export type { PolicyContext, PolicyResult, PolicyStage } from './types';
// Export primary registry-based API
export { definePolicy } from './declarative';
export type {
FeaturePolicyDefinition,
PolicyEvaluator,
PolicyErrorCode,
PolicyReason,
} from './declarative';
// Export policy registry (primary API)
export { createPolicyRegistry } from './registry';
export type { PolicyRegistry } from './registry';
// Export evaluator and bridge functions
export {
createPolicy,
createPoliciesEvaluator,
createPolicyFromRegistry,
createPoliciesFromRegistry,
} from './evaluator';
export type {
PolicyFunction,
PolicyGroup,
EvaluationResult,
} from './evaluator';
// Export helper functions (for policy implementations)
export { allow, deny } from './evaluator';

View File

@@ -0,0 +1,81 @@
import { createRegistry } from '@kit/shared/registry';
import type { FeaturePolicyDefinition } from './declarative';
import type { PolicyContext } from './types';
/**
* Simple policy registry interface
*/
export interface PolicyRegistry {
/** Register a single policy definition */
registerPolicy<
TContext extends PolicyContext = PolicyContext,
TConfig = unknown,
>(
definition: FeaturePolicyDefinition<TContext, TConfig>,
): PolicyRegistry;
/** Get a policy definition by ID */
getPolicy<TContext extends PolicyContext = PolicyContext, TConfig = unknown>(
id: string,
): Promise<FeaturePolicyDefinition<TContext, TConfig>>;
/** Check if a policy exists */
hasPolicy(id: string): boolean;
/** List all registered policy IDs */
listPolicies(): string[];
}
/**
* Creates a new policy registry instance
*/
export function createPolicyRegistry(): PolicyRegistry {
const baseRegistry = createRegistry<
FeaturePolicyDefinition<PolicyContext, unknown>,
string
>();
const policyIds = new Set<string>();
return {
registerPolicy<
TContext extends PolicyContext = PolicyContext,
TConfig = unknown,
>(definition: FeaturePolicyDefinition<TContext, TConfig>) {
// Check for duplicates
if (policyIds.has(definition.id)) {
throw new Error(
`Policy with ID "${definition.id}" is already registered`,
);
}
// Register the policy definition
baseRegistry.register(definition.id, () => definition);
policyIds.add(definition.id);
return this;
},
async getPolicy<
TContext extends PolicyContext = PolicyContext,
TConfig = unknown,
>(id: string) {
if (!policyIds.has(id)) {
throw new Error(`Policy with ID "${id}" is not registered`);
}
return baseRegistry.get(id) as Promise<
FeaturePolicyDefinition<TContext, TConfig>
>;
},
hasPolicy(id: string) {
return policyIds.has(id);
},
listPolicies() {
return Array.from(policyIds);
},
};
}

View File

@@ -0,0 +1,42 @@
/**
* Base context interface that all policy contexts must extend.
* Provides common metadata and identifiers used across all policy types.
*/
export interface PolicyContext {
/** Timestamp when the policy evaluation was initiated */
timestamp: string;
/** Additional metadata for debugging and logging */
metadata?: Record<string, unknown>;
}
/**
* Standard result interface returned by all policy evaluations.
* Provides consistent structure for policy decisions across all features.
*/
export interface PolicyResult {
/** Whether the action is allowed by this policy */
allowed: boolean;
/** Human-readable reason when action is not allowed */
reason?: string;
/** Whether this policy failure requires manual review */
requiresManualReview?: boolean;
/** Additional metadata for debugging, logging, and UI customization */
metadata?: Record<string, unknown>;
}
/**
* Policy evaluation stages are user-defined strings for multi-phase validation.
* Allows policies to run at different points in the user workflow.
*
* Common examples:
* - 'preliminary' - runs before user input/form submission
* - 'submission' - runs during form submission with actual user data
* - 'post_action' - runs after the action has been completed
*
* You can define your own stages like 'validation', 'authorization', 'audit', etc.
*/
export type PolicyStage = string;

View File

@@ -0,0 +1,8 @@
{
"extends": "@kit/tsconfig/base.json",
"compilerOptions": {
"tsBuildInfoFile": "node_modules/.cache/tsbuildinfo.json"
},
"include": ["*.ts", "src"],
"exclude": ["node_modules"]
}

View File

@@ -20,10 +20,10 @@
"@kit/eslint-config": "workspace:*",
"@kit/prettier-config": "workspace:*",
"@kit/tsconfig": "workspace:*",
"@types/react": "19.1.13"
"@types/react": "19.1.15"
},
"dependencies": {
"pino": "^9.11.0"
"pino": "^9.12.0"
},
"typesVersions": {
"*": {

View File

@@ -26,12 +26,11 @@
"@kit/prettier-config": "workspace:*",
"@kit/tsconfig": "workspace:*",
"@supabase/ssr": "^0.7.0",
"@supabase/supabase-js": "2.57.4",
"@supabase/supabase-js": "2.58.0",
"@tanstack/react-query": "5.90.2",
"@types/react": "19.1.13",
"@types/react": "19.1.15",
"next": "15.5.4",
"react": "19.1.1",
"server-only": "^0.0.1",
"zod": "^3.25.74"
},
"typesVersions": {

View File

@@ -25,10 +25,10 @@
"@kit/eslint-config": "workspace:*",
"@kit/prettier-config": "workspace:*",
"@kit/tsconfig": "workspace:*",
"@supabase/supabase-js": "2.57.4",
"@supabase/supabase-js": "2.58.0",
"@tanstack/react-query": "5.90.2",
"@tanstack/react-table": "^8.21.3",
"@types/react": "19.1.13",
"@types/react": "19.1.15",
"@types/react-dom": "19.1.9",
"class-variance-authority": "^0.7.1",
"date-fns": "^4.1.0",
@@ -38,7 +38,7 @@
"prettier": "^3.6.2",
"react-day-picker": "^9.11.0",
"react-hook-form": "^7.63.0",
"react-i18next": "^15.7.3",
"react-i18next": "^16.0.0",
"sonner": "^2.0.7",
"tailwindcss": "4.1.13",
"tailwindcss-animate": "^1.0.7",

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