| 1 | import * as Data from "effect/Data"; |
| 2 | import * as Effect from "effect/Effect"; |
| 3 | import * as FileSystem from "effect/FileSystem"; |
| 4 | import * as Path from "effect/Path"; |
| 5 | import { UserFacingError } from "../UserFacingError.ts"; |
| 6 | |
| 7 | export class StackEntrypointError extends Data.TaggedError( |
| 8 | "StackEntrypointError", |
| 9 | )<{ readonly message: string }> { |
| 10 | readonly [UserFacingError] = true; |
| 11 | } |
| 12 | |
| 13 | export const DEFAULT_ENTRYPOINT = "alchemy.run.ts"; |
| 14 | |
| 15 | /** |
| 16 | * The absolute path of the stack entrypoint, or the user-facing error for |
| 17 | * a missing one. Kept apart from `Session.ts` so the `alchemy dev` |
| 18 | * supervisor can check the entry before it starts an exec child, without |
| 19 | * loading the engine that module carries. |
| 20 | */ |
| 21 | export const resolveStackEntrypoint = Effect.fn(function* (main: string) { |
| 22 | const fs = yield* FileSystem.FileSystem; |
| 23 | const path = yield* Path.Path; |
| 24 | const absolutePath = path.resolve(main); |
| 25 | if (!(yield* fs.exists(absolutePath))) { |
| 26 | return yield* Effect.fail( |
| 27 | new StackEntrypointError({ |
| 28 | message: `Stack entrypoint '${main}' does not exist in '${path.dirname(absolutePath)}'. Run this command from an Alchemy project or pass --config <path>.`, |
| 29 | }), |
| 30 | ); |
| 31 | } |
| 32 | return absolutePath; |
| 33 | }); |