Sveltekit + Rolldown + Cloudflare Workers ✅

Making demo for testing purposes :check:

Enviroment Variable

Format

For the sake of portability (and sanity), environment variable names must consist solely of letters, digits, and the underscore ( _ ) and must not begin with a digit. In regex-speak, the names must match the following pattern:

[a-zA-Z_]+[a-zA-Z0-9_]\*

Example

# Static
PUBLIC_API_KEY=publicsecrethere
FLAGS_SECRET=secrethere
DEEP_SECRET=deepsecrethere

# Dynamic
DYNAMIC_SECRET=deepsecrethere
ENCRYPTED_DYNAMIC_SECRET=deepsecrethere

Declaring Enviroment Variables

There is a caveat, you are able to declare enviroment variables at runtime or build

Build

When you declare variables at build, the only way to access it is by importing the static enviroment variables the following way:

import { PUBLIC_API_KEY } from '$env/static/public';
import { FLAGS_SECRET, DEEP_SECRET } from '$env/static/private';

export function GET() {
    return json({
        publicKey: PUBLIC_API_KEY,
        unencryptedSecret: FLAGS_SECRET,
        cloudflareEncryptedSecretKey: DEEP_SECRET,
        requestDate: new Date().getUTCMilliseconds()
    });
}

Runtime

When you declare variables at runtime, the only way to access it is by importing the dynamic enviroment variables the following way:

import { env } from '$env/dynamic/private';

export function GET() {
    return json({
        unencrypted: env.DYNAMIC_SECRET,
        cloudflareEncryptedDyanmicKey: env.ENCRYPTED_DYNAMIC_SECRET
    });
}

Build Config