| 1 | import path from "node:path"; |
| 2 | import type * as rolldown from "rolldown"; |
| 3 | |
| 4 | const PACKAGE_NAME = "@alchemy.run/cloudflare-runtime"; |
| 5 | |
| 6 | /** |
| 7 | * Keeps the Vite build's references to sibling runtime components external. |
| 8 | * Source code uses ordinary relative TypeScript imports, while published |
| 9 | * output must cross component boundaries through the package export map so |
| 10 | * consumers receive one shared copy of the runtime types. |
| 11 | */ |
| 12 | export const RuntimeSubpathExportPlugin = (): rolldown.Plugin => ({ |
| 13 | name: "alchemy:runtime-subpath-exports", |
| 14 | resolveId(source, importer) { |
| 15 | if (importer === undefined || !source.startsWith(".")) { |
| 16 | return; |
| 17 | } |
| 18 | |
| 19 | const normalizedImporter = importer.replaceAll("\\", "/"); |
| 20 | const normalizedSource = source.replaceAll("\\", "/"); |
| 21 | const absoluteImporter = /^[A-Za-z]:\//.test(normalizedImporter) |
| 22 | ? `/${normalizedImporter}` |
| 23 | : normalizedImporter; |
| 24 | const resolved = path.posix.resolve( |
| 25 | path.posix.dirname(absoluteImporter), |
| 26 | normalizedSource, |
| 27 | ); |
| 28 | const match = resolved.match(/\/src\/(core|rolldown)\/(.+)\.ts$/); |
| 29 | if (match === null) { |
| 30 | return; |
| 31 | } |
| 32 | |
| 33 | const [, component, modulePath] = match; |
| 34 | // Wire constants are internal and safe to inline in the Vite bundle. |
| 35 | if (component === "core" && modulePath === "globals/ProxyHeaders.shared") { |
| 36 | return; |
| 37 | } |
| 38 | const subpath = |
| 39 | modulePath === "index" |
| 40 | ? component |
| 41 | : `${component}/${modulePath.replace(/\.shared$/, "").replace(/\/index$/, "")}`; |
| 42 | return { id: `${PACKAGE_NAME}/${subpath}`, external: true }; |
| 43 | }, |
| 44 | }); |