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outsideurimagination

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•Created by outsideurimagination on 2/16/2025 in #questions

flatMorph in a type

I'm trying to use flatMorph to generate dynamic template literal keys for a type but it's becoming unknown.

const test = flatMorph(
  Array.from({ length: 15 }, (_, i) => i + 1),
  (i, v) => [`test_${i}` as const, 'string'],
);
const a = type(test)

const test = flatMorph(
  Array.from({ length: 15 }, (_, i) => i + 1),
  (i, v) => [`test_${i}` as const, 'string'],
);
const a = type(test)

The types are:

const test: {
    [x: `test_${number}`]: string;
}

const a: Type<unknown, {}>

const test: {
    [x: `test_${number}`]: string;
}

const a: Type<unknown, {}>

Why is a not preserving the type?

6 replies

CDCloudflare Developers

•Created by outsideurimagination on 4/3/2024 in #pages-help

Dynamically import incompatible packages for dev only

I am currently dynamically importing a package that is incompatible in workers just during development, but the worker still won't compile when I try deploying since it still tries to get those packages. I am wondering how I can avoid that and truly just have that dependency in local development? I guess something is hoisting my dynamic import. Maybe there's a technique to make cloudflare ignore it?

let driver: Driver;
if (NODE_ENV === 'development') {
  const {default: fsDriver} = await import("unstorage/drivers/fs-lite");
  driver = fsDriver({ base: "./kv" })
}

let driver: Driver;
if (NODE_ENV === 'development') {
  const {default: fsDriver} = await import("unstorage/drivers/fs-lite");
  driver = fsDriver({ base: "./kv" })
}

1 replies

Aarktype

•Created by outsideurimagination on 3/18/2024 in #questions

False recursive reference

Anyone know how I can get past this false positive claiming I'm recursively referencing process.env in its base type? Since the value is just being used to compute the base type, not in the actual base type, this should be okay.

import { type } from "arktype";

const env = type({
  ...(process.env.NODE_ENV === "production" && {
    DATABASE_URL: 'string'
  }),
});

export const assertEnv = () => env.assert(process.env);

type Env = typeof env.infer;
declare global {
  namespace NodeJS {
    interface ProcessEnv extends Env {}
  }
}

import { type } from "arktype";

const env = type({
  ...(process.env.NODE_ENV === "production" && {
    DATABASE_URL: 'string'
  }),
});

export const assertEnv = () => env.assert(process.env);

type Env = typeof env.infer;
declare global {
  namespace NodeJS {
    interface ProcessEnv extends Env {}
  }
}

2 replies

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