72 lines
1.9 KiB
TypeScript
72 lines
1.9 KiB
TypeScript
import { useMatches } from '@remix-run/react';
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import { useMemo } from 'react';
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import type { User } from '~/models/user.server';
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const DEFAULT_REDIRECT = '/';
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/**
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* This should be used any time the redirect path is user-provided
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* (Like the query string on our login/signup pages). This avoids
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* open-redirect vulnerabilities.
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* @param {string} to The redirect destination
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* @param {string} defaultRedirect The redirect to use if the to is unsafe.
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*/
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export function safeRedirect(
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to: FormDataEntryValue | string | null | undefined,
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defaultRedirect: string = DEFAULT_REDIRECT
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) {
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if (!to || typeof to !== 'string') {
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return defaultRedirect;
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}
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if (!to.startsWith('/') || to.startsWith('//')) {
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return defaultRedirect;
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}
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return to;
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}
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/**
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* This base hook is used in other hooks to quickly search for specific data
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* across all loader data using useMatches.
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* @param {string} id The route id
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* @returns {JSON|undefined} The router data or undefined if not found
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*/
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export function useMatchesData(
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id: string
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): Record<string, unknown> | undefined {
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const matchingRoutes = useMatches();
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const route = useMemo(
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() => matchingRoutes.find((route) => route.id === id),
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[matchingRoutes, id]
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);
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return route?.data;
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}
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function isUser(user: any): user is User {
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return user && typeof user === 'object' && typeof user.email === 'string';
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}
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export function useOptionalUser(): User | undefined {
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const data = useMatchesData('root');
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if (!data || !isUser(data.user)) {
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return undefined;
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}
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return data.user;
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}
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export function useUser(): User {
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const maybeUser = useOptionalUser();
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if (!maybeUser) {
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throw new Error(
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'No user found in root loader, but user is required by useUser. If user is optional, try useOptionalUser instead.'
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);
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}
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return maybeUser;
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}
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export function validateEmail(email: unknown): email is string {
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return typeof email === 'string' && email.length > 3 && email.includes('@');
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}
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