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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 | 1x 1x 1x 1x 1x 16x 16x 14x 14x 14x 14x 14x 14x 30x 2x 2x 30x 5x 5x 23x 14x 14x 14x 14x 14x 1x 2x 2x 2x 2x 9x 9x 9x 9x 9x 9x 9x 9x 9x 9x 9x 9x 9x 9x 3x 2x 2x 2x 2x 2x 2x 2x 3x 3x 9x 2x 2x 9x 9x 9x 9x 1x 1x 1x 1x 1x 1x 1x 1x 7x 7x 7x 7x 7x 7x 7x 2x 1x 7x 7x 5x 5x 5x 7x 2x 2x 2x 7x 2x 2x 2x 2x 2x 7x 7x 1x 1x 1x | import express, { type Router } from "express"; import { loadModulesfromDir } from "./file-module"; import { type Handler, handleResponse, isHandler } from "./handler"; import { getLogger } from "./log"; export type FileRoute = { filePath: string; GET?: Handler; POST?: Handler; }; export function getExpressRoutePath(relativePath: string): string { const log = getLogger("express-router"); if (relativePath === "index.tsx") return "/"; const expressPath = relativePath .replace(/\/index.tsx$/, "") .replace(/index.tsx$/, "") .replace(/\.tsx$/, "") .split("/") .map((part) => { if (part.startsWith("[...") && part.endsWith("]")) { return `:${part.slice(4, -1)}(*)`; } if (part.startsWith("[") && part.endsWith("]")) { return `:${part.slice(1, -1)}`; } return part; }) .join("/"); log.debug(`${relativePath} -> ${expressPath}`); return `/${expressPath}`; } export function expressRouter(fileRoutes: FileRoute[]): { paths: string[]; router: Router; } { const router = express.Router(); const paths: string[] = []; for (const route of fileRoutes) { const routePath = getExpressRoutePath(route.filePath); paths.push(routePath); if (route.GET) { router.get(routePath, async (req, res, next) => { try { const userResponse = await (route as { GET: Handler }).GET({ req, res, }); await handleResponse(res, userResponse); } catch (e) { next(e); } }); } if (route.POST) { router.post(routePath, async (req, res, next) => { try { const userResponse = await (route as { POST: Handler }).POST({ req, res, }); await handleResponse(res, userResponse); } catch (e) { next(e); } }); } } return { paths, router }; } async function load(m: unknown): Promise<Handler> { if (!isHandler(m)) throw new Error("invalid file route module"); return m as Handler; } /** Return an express router that serves files as routes form the given directory. */ export async function fileRouter(opts?: { cwd?: string }): Promise<{ paths: string[]; router: express.RequestHandler; fileRoutes: FileRoute[]; }> { const log = getLogger("file-router"); const cwd = opts?.cwd ?? process.cwd(); const modules = await loadModulesfromDir(cwd, load, [".tsx"]); log.debug(`found ${modules.length} file routes in ${cwd}`); const fileRoutes: FileRoute[] = []; for (const module of modules) { const fileRoute: FileRoute = { filePath: module.relativePath, GET: undefined, POST: undefined, }; if ( !module.namedExports?.GET && !module.namedExports?.POST && !module.defaultExport ) { throw new Error( `invalid file route module at ${module.absolutePath}, no GET or POST export found`, ); } if (module.namedExports?.GET) { log.debug(`found GET export in ${module.absolutePath}`); fileRoute.GET = module.namedExports.GET; } if (module.namedExports?.POST) { log.debug(`found POST export in ${module.absolutePath}`); fileRoute.POST = module.namedExports.POST; } if (module.defaultExport && !fileRoute.GET) { log.debug( `found default export in ${module.absolutePath}, assuming GET export`, ); fileRoute.GET = module.defaultExport; } fileRoutes.push(fileRoute); } const { paths, router } = expressRouter(fileRoutes); return { paths, router, fileRoutes }; } |