| 1 | import { spawnSync } from "node:child_process"; |
| 2 | |
| 3 | export interface Runtime { |
| 4 | readonly name: "bun" | "node"; |
| 5 | readonly argv: (entry: string) => Array<string>; |
| 6 | readonly available: boolean; |
| 7 | } |
| 8 | |
| 9 | const hasBin = (bin: string): boolean => { |
| 10 | try { |
| 11 | // `which` doesn't exist on Windows; `where` is the equivalent. |
| 12 | const probe = process.platform === "win32" ? "where" : "which"; |
| 13 | const r = spawnSync(probe, [bin], { encoding: "utf-8" }); |
| 14 | return r.status === 0 && Boolean(r.stdout?.trim()); |
| 15 | } catch { |
| 16 | return false; |
| 17 | } |
| 18 | }; |
| 19 | |
| 20 | const canTransformTypes = |
| 21 | spawnSync("node", ["-p", 'process.features.typescript === "transform"'], { |
| 22 | encoding: "utf-8", |
| 23 | }).stdout.trim() === "true"; |
| 24 | const transformTypesFlags = canTransformTypes |
| 25 | ? ["--experimental-transform-types", "--no-warnings=ExperimentalWarning"] |
| 26 | : []; |
| 27 | |
| 28 | export const runtimes = (): Array<Runtime> => [ |
| 29 | { |
| 30 | name: "bun", |
| 31 | argv: (entry) => ["bun", "run", entry], |
| 32 | available: hasBin("bun"), |
| 33 | }, |
| 34 | { |
| 35 | name: "node", |
| 36 | argv: (entry) => ["node", ...transformTypesFlags, entry], |
| 37 | // Node 26 removed transform-types and its built-in strip-only loader |
| 38 | // cannot execute parameter properties used by Alchemy's source graph. |
| 39 | // Published JS remains supported; only these source-level fixtures skip. |
| 40 | available: hasBin("node") && canTransformTypes, |
| 41 | }, |
| 42 | ]; |