refactor(frontend): share Clerk publishable-key heuristic across client+server
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@@ -17,26 +17,14 @@ import {
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import type { ComponentProps } from "react";
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export function isValidClerkPublishableKey(key: string | undefined): key is string {
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if (!key) return false;
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// Clerk publishable keys look like: pk_test_... or pk_live_...
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// In CI we want builds to stay secretless; if the key isn't present/valid,
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// we skip Clerk entirely so `next build` can prerender.
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//
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// Note: Clerk appears to validate key *contents*, not just shape. We therefore
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// use a conservative heuristic to avoid treating obvious placeholders as valid.
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const m = /^pk_(test|live)_([A-Za-z0-9]+)$/.exec(key);
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if (!m) return false;
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const body = m[2];
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if (body.length < 16) return false;
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if (/^0+$/.test(body)) return false;
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return true;
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}
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import { isLikelyValidClerkPublishableKey } from "@/auth/clerkKey";
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export function isClerkEnabled(): boolean {
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// IMPORTANT: keep this in sync with AuthProvider; otherwise components like
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// <SignedOut/> may render without a <ClerkProvider/> and crash during prerender.
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return isValidClerkPublishableKey(process.env.NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY);
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return isLikelyValidClerkPublishableKey(
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process.env.NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY,
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);
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}
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export function SignedIn(props: { children: ReactNode }) {
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22
frontend/src/auth/clerkKey.ts
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22
frontend/src/auth/clerkKey.ts
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@@ -0,0 +1,22 @@
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// Shared Clerk publishable-key gating logic.
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//
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// IMPORTANT: keep this file dependency-free (no `"use client"`, no React, no Clerk imports)
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// so it can be used from both client and server/edge entrypoints.
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export function isLikelyValidClerkPublishableKey(key: string | undefined): key is string {
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if (!key) return false;
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// Clerk publishable keys look like: pk_test_... or pk_live_...
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// In CI we want builds to stay secretless; if the key isn't present/valid,
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// we skip Clerk entirely so `next build` can prerender.
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//
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// Note: this is a conservative heuristic (not an authoritative validation).
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const m = /^pk_(test|live)_([A-Za-z0-9]+)$/.exec(key);
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if (!m) return false;
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const body = m[2];
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if (body.length < 16) return false;
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if (/^0+$/.test(body)) return false;
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return true;
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}
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@@ -3,12 +3,12 @@
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import { ClerkProvider } from "@clerk/nextjs";
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import type { ReactNode } from "react";
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import { isValidClerkPublishableKey } from "@/auth/clerk";
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import { isLikelyValidClerkPublishableKey } from "@/auth/clerkKey";
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export function AuthProvider({ children }: { children: ReactNode }) {
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const publishableKey = process.env.NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY;
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if (!isValidClerkPublishableKey(publishableKey)) {
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if (!isLikelyValidClerkPublishableKey(publishableKey)) {
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return <>{children}</>;
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}
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@@ -1,7 +1,10 @@
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import { NextResponse } from "next/server";
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import { clerkMiddleware } from "@clerk/nextjs/server";
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const isClerkEnabled = () => Boolean(process.env.NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY);
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import { isLikelyValidClerkPublishableKey } from "@/auth/clerkKey";
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const isClerkEnabled = () =>
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isLikelyValidClerkPublishableKey(process.env.NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY);
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export default isClerkEnabled() ? clerkMiddleware() : () => NextResponse.next();
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