Tnv ソース コードの ClientOptions インターフェイスの説明

export const env = createEnv({
 /*
 * Serverside Environment variables, not available on the client.
 * Will throw if you access these variables on the client.
 */
 server: {
 DATABASE_URL: z.string().url(),
 OPEN_AI_API_KEY: z.string().min(1),
 },
 /*
 * Environment variables available on the client (and server).
 *
 * ? You'll get type errors if these are not prefixed with NEXT_PUBLIC_.
 */
 client: {
 NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY: z.string().min(1),
 },
 /*
 * Due to how Next.js bundles environment variables on Edge and Client,
 * we need to manually destructure them to make sure all are included in bundle.
 *
 * ? You'll get type errors if not all variables from `server` & `client` are included here.
 */
 runtimeEnv: {
 DATABASE_URL: process.env.DATABASE_URL,
 OPEN_AI_API_KEY: process.env.OPEN_AI_API_KEY,
 NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY:
 process.env.NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY,
 },
});

client: {
 NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY: z.string().min(1),
 },

export interface ClientOptions<
 TPrefix extends string | undefined,
 TClient extends Record<string, ZodType>,
> {
 /**
 * The prefix that client-side variables must have. This is enforced both at
 * a type-level and at runtime.
 */
 clientPrefix: TPrefix;
/**
 * Specify your client-side environment variables schema here. This way you can ensure the app isn't
 * built with invalid env vars.
 */
 client: Partial<{
 [TKey in keyof TClient]: TKey extends `${TPrefix}${string}`
 ? TClient[TKey]
 : ErrorMessage<`${TKey extends string
 ? TKey
 : never} is not prefixed with ${TPrefix}.`>;
 }>;
}