196 lines
7.0 KiB
TypeScript
196 lines
7.0 KiB
TypeScript
/**
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* Reads the server's settings from the `GERBEUR_*` environment variables, once
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* at import, and holds the fixed limits the backend applies. The deno tasks
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* load `.env` with `--env-file`, so changing a setting needs a restart.
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*
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* @module
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*/
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/** The port the server listens on (`GERBEUR_PORT`, default 8000). */
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export const PORT: number = Number(Deno.env.get("GERBEUR_PORT")) || 8000;
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/**
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* The `smtps://` URL of the server email-service sends mail through
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* (`GERBEUR_SMTPS_URL`). When it is empty, the welcome and password reset
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* emails are silently skipped.
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*/
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export const SMTPS_URL: string = Deno.env.get("GERBEUR_SMTPS_URL")?.trim() ||
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"";
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/** The `From` address of the welcome and password reset emails. */
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export const FROM_EMAIL: string = Deno.env.get("GERBEUR_FROM_EMAIL")?.trim() ||
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"";
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const DEFAULT_WELCOME_EMAIL_BODY = `# Welcome to {{site_name}}!
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Hi **{{username}}**,
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Your account has been created successfully. Welcome aboard!`;
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/**
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* The Markdown of the welcome email sent on registration
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* (`GERBEUR_WELCOME_EMAIL_BODY`). The users route replaces `{{site_name}}` and
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* `{{username}}` in it and sends it as both text and HTML.
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*/
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export const WELCOME_EMAIL_BODY: string =
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Deno.env.get("GERBEUR_WELCOME_EMAIL_BODY")?.trim() ||
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DEFAULT_WELCOME_EMAIL_BODY;
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/**
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* The key lib/jwt.ts signs and verifies tokens with (`GERBEUR_JWT_SECRET`).
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* The server refuses to start without it.
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*/
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export const JWT_SECRET: string = Deno.env.get("GERBEUR_JWT_SECRET")?.trim() ||
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"";
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/**
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* The interface the server binds to (`GERBEUR_LISTEN_HOST`). The default,
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* 0.0.0.0, lets Docker forward the port; 127.0.0.1 keeps it to loopback.
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*/
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export const LISTEN_HOST: string = Deno.env.get("GERBEUR_LISTEN_HOST") ||
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"0.0.0.0";
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/**
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* The URL visitors reach the server at (`GERBEUR_PUBLIC_URL`), without a
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* trailing slash. Behind a reverse proxy it must be the outside URL: it is an
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* allowed origin, it tells links to this site's own pages from other links,
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* and it prefixes the image URLs in their previews.
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*/
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export const PUBLIC_URL: string =
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Deno.env.get("GERBEUR_PUBLIC_URL")?.trim().replace(/\/$/, "") ||
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`http://localhost:${PORT}`;
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/**
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* The URL the frontend is served from (`GERBEUR_FRONTEND_URL`), when it isn't
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* {@link PUBLIC_URL}, as with a separate Vite server. It is an allowed origin,
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* and password reset links point to it.
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*/
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export const FRONTEND_URL: string =
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Deno.env.get("GERBEUR_FRONTEND_URL")?.trim() || PUBLIC_URL;
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/**
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* The SQLite database file (`GERBEUR_DB_PATH`). api/test/setup.ts points it at
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* a throwaway file before anything opens the database.
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*/
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export const DB_PATH: string = Deno.env.get("GERBEUR_DB_PATH") ||
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"api/sql/gerbeur.db";
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/**
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* The directory uploads are stored under (`GERBEUR_UPLOADS_DIR`). Each kind has
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* its subdirectory below, created by the first upload, and each file is named
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* after the id of what it belongs to.
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*/
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export const UPLOADS_DIR: string = Deno.env.get("GERBEUR_UPLOADS_DIR") ||
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"api/uploads";
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/** Holds the file of each file dump. */
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export const DUMPS_DIR = `${UPLOADS_DIR}/dumps`;
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/** Holds each user's avatar. */
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export const AVATARS_DIR = `${UPLOADS_DIR}/avatars`;
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/** Holds each playlist's cover. */
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export const PLAYLIST_IMAGES_DIR = `${UPLOADS_DIR}/playlist-images`;
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/**
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* Holds the images pasted into chat messages, comments, dump notes and
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* descriptions. The startup tasks purge those nothing links to.
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*/
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export const ATTACHMENTS_DIR = `${UPLOADS_DIR}/attachments`;
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/**
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* Holds the thumbnails a poster uploads (`<id>-custom`) and those the
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* thumbnails route generates from file dumps.
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*/
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export const THUMBNAILS_DIR = `${UPLOADS_DIR}/thumbnails`;
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/**
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* The largest image upload accepted, in bytes. lib/upload.ts's error message
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* says "5 MB", so the two change together.
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*/
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export const MAX_IMAGE_SIZE_BYTES = 5 * 1024 * 1024;
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/** The image types accepted for avatars, covers, thumbnails and attachments. */
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export const ALLOWED_IMAGE_MIMES: Set<string> = new Set([
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"image/jpeg",
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"image/png",
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"image/gif",
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"image/webp",
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]);
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/**
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* The MIME type prefixes a file dump may have. dump-service also accepts the
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* exact types of {@link DUMP_ALLOWED_MIME_TYPES}.
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*/
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export const DUMP_ALLOWED_MIME_PREFIXES: string[] = [
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"text/",
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"image/",
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"video/",
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"audio/",
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];
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/** The documents and archives a file dump may be, beyond the prefixes. */
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export const DUMP_ALLOWED_MIME_TYPES: Set<string> = new Set([
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"application/pdf",
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"application/json",
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"application/zip",
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"application/x-zip-compressed",
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"application/vnd.openxmlformats-officedocument.wordprocessingml.document",
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"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
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"application/vnd.openxmlformats-officedocument.presentationml.presentation",
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"application/msword",
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"application/vnd.ms-excel",
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"application/vnd.ms-powerpoint",
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]);
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/** The page size when a request names none. */
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export const PAGINATION_DEFAULT_LIMIT = 20;
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/** The largest page size a request may ask for. */
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export const PAGINATION_MAX_LIMIT = 100;
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/** How long an attachment nothing links to is kept before startup purges it. */
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export const ORPHANED_ATTACHMENTS_RETENTION_HOURS = 1;
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/**
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* How long an invite stays usable. invite-service refuses an older one, and
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* the startup tasks purge it.
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*/
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export const UNUSED_INVITES_RETENTION_DAYS = 7;
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/**
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* The site's name (`GERBEUR_SITE_NAME`). It is filled into index.html, the OG
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* tags, the icons' manifest and the emails.
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*/
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export const OG_SITE_NAME: string = Deno.env.get("GERBEUR_SITE_NAME") ||
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"gerbeur";
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/**
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* The emoji that serves as the site's logo (`GERBEUR_SITE_EMOJI`). The icons
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* script draws the favicons from it, and index.html carries it to the app's
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* header, so changing it needs a restart but no rebuild.
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*/
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export const SITE_EMOJI: string = Deno.env.get("GERBEUR_SITE_EMOJI") || "🚚";
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/**
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* How the frontend plays Bandcamp. `"embed"` uses Bandcamp's iframe, which
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* can't autoplay. `"native"` resolves the page's streams through
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* `GET /api/bandcamp/tracks` and plays them in the app's player, which
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* autoplays and queues an album's tracks.
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*/
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export type BandcampPlayer = "embed" | "native";
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/**
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* How the frontend plays Bandcamp (`GERBEUR_BANDCAMP_PLAYER`), passed to it in
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* index.html. Any value but `"native"` means `"embed"`, so a typo falls back to
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* the player that always works.
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*/
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export const BANDCAMP_PLAYER: BandcampPlayer =
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Deno.env.get("GERBEUR_BANDCAMP_PLAYER")?.trim() === "native"
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? "native"
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: "embed";
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/**
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* The background of the generated Apple touch icon, the manifest's colors, and
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* the accent of previews of this site's own pages. index.html's `theme-color`
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* tags don't follow it.
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*/
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export const THEME_COLOR = "#111827";
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const rawOrigins = Deno.env.get("GERBEUR_ALLOWED_ORIGINS") ?? "";
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/**
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* The origins that CORS in main.ts and the WebSocket route accept. They are
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* {@link PUBLIC_URL}, {@link FRONTEND_URL} and the comma-separated
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* `GERBEUR_ALLOWED_ORIGINS`.
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*/
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export const ALLOWED_ORIGINS: string[] = Array.from(
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new Set([
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PUBLIC_URL,
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FRONTEND_URL,
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...rawOrigins.split(",").map((o) => o.trim()).filter(Boolean),
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]),
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);
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