Quickstart isn't working (no explanation of how to add DATABASE_URL to env)

Bug description

I’m following the Quickstart example on the official site and get an error after running npm run dev

> script@ dev /prisma
> ts-node ./script.ts

(node:190106) UnhandledPromiseRejectionWarning: Error: 
Invalid `prisma.user.findMany()` invocation in
/prisma/script.ts:7:40

   4 
   5 // A `main` function so that you can use async/await
   6 async function main() {
→  7     const allUsers = await prisma.user.findMany(
  error: Environment variable not found: **DATABASE_URL**.
  -->  schema.prisma:3
   | 
 2 |   provider = "sqlite"
 3 |   url      = env("DATABASE_URL")
   | 

Validation Error Count: 1
    at CB (/prisma/node_modules/@prisma/client/runtime/index.js:38681:17)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:190106) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:190106) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

How to reproduce

1. curl -L https://pris.ly/quickstart | tar -xz --strip=2 quickstart-master/typescript/starter
2. cd starter && npm install
3. Write a query and view the results
4. npm run dev

Expected behavior

A working example that returns all the users query result with explanation of how to add DATABASE_URL to env.

Prisma information

datasource db {
  provider = "sqlite"
  url      = env("DATABASE_URL")
}

generator client {
  provider = "prisma-client-js"
}

model Post {
  id        Int     @id @default(autoincrement())
  title     String
  content   String?
  published Boolean @default(false)
  author    User?   @relation(fields: [authorId], references: [id])
  authorId  Int?
}

model User {
  id    Int     @id @default(autoincrement())
  email String  @unique
  name  String?
  posts Post[]
}

Environment & setup

• OS: Linux Mint
• Database: SQLite
• Node.js version: v14.17.5

Prisma Version

3.5.0

[ezalivadnyi]

I downloaded the quickstarter archive again and I see .env file now. The problem became because I moved files when “Show Hidden Files” (Ctrl+H) was disabled so .env file wasn’t moved and missed. @janpio Thanks!

[robjinman]

My problem was I made a directory for the starter project, and then tried to move the files up a level with mv, which didn’t copy the hidden .env file. Doh!

mkdir prisma
cd prisma
curl -L https://pris.ly/quickstart | tar -xz --strip=2 quickstart-main/typescript/starter
mv ./starter/* ./
rm -r ./starter