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build.ts
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build.ts
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import { walk } from "std/fs/walk.ts";
import { ensureDir } from "std/fs/ensure_dir.ts";
import * as path from "std/path/mod.ts";
import * as esbuild from "x/esbuild/mod.js";
import { denoPlugin } from "x/esbuild_deno_loader/mod.ts";
import { isProduction, isTest } from "./env.ts";
interface Route {
name: string;
parent?: Route;
react?: boolean;
file?: {
react?: string;
oak?: string;
};
main?: {
react?: string;
oak?: string;
};
index?: {
react?: string;
oak?: string;
};
children?: Record<string, Route>;
}
const TEST_PATH = /(\.|_)test(\.(?:js|jsx|ts|tsx))$/;
const IGNORE_PATH = /(\/|\\)_[^\/\\]*(\.(?:js|jsx|ts|tsx))$/;
const ROUTE_PATH = /(\.(?:js|jsx|ts|tsx))$/;
const REACT_EXT = /(\.(?:jsx|tsx))$/;
function addFileToDir(route: Route, name: string, ext: string) {
const isReactFile = REACT_EXT.test(ext);
if (name === "main" || name === "index") {
if (!route[name]) {
route[name] = {};
}
if (isReactFile) {
route[name]!.react = `${name}${ext}`;
} else {
route[name]!.oak = `${name}${ext}`;
}
} else {
if (!route.children) route.children = {};
if (!route.children[name]) {
route.children[name] = { name, parent: route, file: {} };
}
const childRoute = route.children[name];
if (!childRoute.file) childRoute.file = {};
if (isReactFile) {
childRoute.react = true;
childRoute.file.react = `${name}${ext}`;
} else {
childRoute.file.oak = `${name}${ext}`;
}
}
if (isReactFile) {
let currentRoute: Route | undefined = route;
while (currentRoute && !currentRoute.react) {
currentRoute.react = true;
currentRoute = route.parent as Route;
}
}
}
async function generateRoutes(routesUrl: string): Promise<Route> {
const rootRoute = { name: "", children: {} } as Route;
for await (
const entry of walk(routesUrl, {
includeDirs: false,
match: [ROUTE_PATH],
skip: [TEST_PATH, IGNORE_PATH],
})
) {
const parsedPath = path.parse(entry.path);
const { name, ext, dir } = parsedPath;
const relativePath = path.relative(routesUrl, dir.replaceAll("\\", "/"));
const layers = relativePath.length ? relativePath.split("/") : [];
let parentRoute = rootRoute;
for (const layer of layers) {
if (!parentRoute.children) parentRoute.children = {};
if (!parentRoute.children[layer]) {
parentRoute.children[layer] = {
name: layer,
children: {},
parent: parentRoute,
};
}
parentRoute = parentRoute.children[layer];
}
addFileToDir(parentRoute, name, ext);
}
return rootRoute;
}
const ROUTE_PARAM = /^\[(.+)]$/;
const ROUTE_WILDCARD = /^\[\.\.\.\]$/;
function routePathFromName(name: string, forServer = false) {
if (!name) return "/";
return name
.replace(ROUTE_WILDCARD, forServer ? "(.*)" : "*")
.replace(ROUTE_PARAM, ":$1");
}
function routerPathFromName(name: string) {
return routePathFromName(name, true);
}
function lazyImportLine(routeId: number, routePath: string, filePath: string) {
return `const $${routeId} = lazy(${
routePath ? `"/${routePath}", ` : ""
}() => import("./${filePath}"));`;
}
function routeFileData(routeId: number, relativePath: string, route: Route) {
const importLines: string[] = [];
const name = routePathFromName(route.name);
let routeText = `{ path: "${name}"`;
const { file, main, index, children } = route;
if (file?.react) {
importLines.push(
lazyImportLine(
routeId,
relativePath,
path.posix.join(relativePath, routeId === 0 ? "" : "../", file.react),
),
);
routeText += `, element: <$${routeId} /> }`;
routeId++;
} else {
if (main?.react) {
if (relativePath) {
importLines.push(
lazyImportLine(
routeId,
relativePath,
path.posix.join(relativePath, main.react),
),
);
} else {
importLines.push(
`import * as $${routeId++} from "./${
path.posix.join(relativePath, main.react)
}";`,
`let $${routeId};`,
`if (($${routeId - 1} as RouteFile).ErrorFallback) {`,
` $${routeId} = withAppErrorBoundary($${routeId - 1}.default, {`,
` FallbackComponent: ($${
routeId - 1
} as RouteFile).ErrorFallback!,`,
` });`,
`} else {`,
` $${routeId} = $${routeId - 1}.default;`,
`}`,
);
}
routeText += `, element: <$${routeId} />`;
routeId++;
} else if (!relativePath) {
importLines.push(
`import { Outlet } from "npm/react-router-dom";`,
`const $${routeId} = withAppErrorBoundary(() => <Outlet />, { FallbackComponent: DefaultErrorFallback });`,
);
routeText += `, element: <$${routeId} />`;
routeId++;
}
const childRouteTexts: string[] = [];
if (index?.react) {
importLines.push(
lazyImportLine(
routeId,
path.posix.join(relativePath, "index"),
path.posix.join(relativePath, index.react),
),
);
childRouteTexts.push(`{ index: true, element: <$${routeId} /> }`);
routeId++;
}
let notFoundRoute: Route | undefined = undefined;
for (const childRoute of Object.values(children ?? {})) {
if (!childRoute.react) continue;
if (childRoute.name === "[...]") {
notFoundRoute = childRoute;
continue;
}
const {
importLines: childImportLines,
routeText: childRouteText,
nextRouteId,
} = routeFileData(
routeId,
path.posix.join(relativePath, childRoute.name),
childRoute,
);
importLines.push(...childImportLines);
childRouteTexts.push(childRouteText);
routeId = nextRouteId;
}
if (notFoundRoute) {
const {
importLines: childImportLines,
routeText: childRouteText,
nextRouteId,
} = routeFileData(
routeId,
path.posix.join(relativePath, notFoundRoute.name),
notFoundRoute,
);
importLines.push(...childImportLines);
childRouteTexts.push(childRouteText);
routeId = nextRouteId;
} else {
childRouteTexts.push(`{ path: "*", element: <NotFound /> }`);
}
if (childRouteTexts.length) {
routeText += `, children: [\n${childRouteTexts.join(",\n")}\n]`;
}
routeText += "}";
}
return {
importLines,
routeText,
nextRouteId: routeId,
};
}
function routeImportLines(routeId: number, relativePath: string) {
return [
`import "./${relativePath}";`,
`import * as $${routeId} from "./${relativePath}";`,
];
}
function routerImportLine(routeId: number, relativePath: string) {
return `import $${routeId} from "./${relativePath}";`;
}
function routerFileData(
parentRouteId: number,
routeId: number,
relativePath: string,
route: Route,
) {
const importLines: string[] = [];
const routerLines: string[] = [];
const { name, file, main, index, react, children, parent } = route;
if (file) {
if (file.react) {
importLines.push(
...routeImportLines(
routeId,
path.posix.join(relativePath, routeId > 0 ? "../" : "", file.react),
),
);
routerLines.push(
`if (`,
` ($${routeId} as RouteFile).ErrorFallback || ($${routeId} as RouteFile).boundary`,
`) {`,
` $${parentRouteId}.use("/${
routerPathFromName(name)
}", errorBoundary(($${routeId} as RouteFile).boundary ?? "/${relativePath}"));`,
` $${parentRouteId}.use(errorBoundary(boundaries[boundaries.length - 1]));`,
`}`,
);
routeId++;
}
if (file.oak) {
importLines.push(
routerImportLine(
routeId,
path.posix.join(relativePath, routeId > 0 ? "../" : "", file.oak),
),
);
if (relativePath !== "") {
routerLines.push(
`$${parentRouteId}.use("/${
routerPathFromName(name)
}", $${routeId}.routes(), $${routeId}.allowedMethods());`,
);
}
routeId++;
} else if (file.react) {
routerLines.push(
`$${parentRouteId}.use("/${
routerPathFromName(name)
}", defaultRouter.routes(), defaultRouter.allowedMethods())`,
);
}
} else {
const mainRouteId = routeId++;
if (main) {
if (main.oak) {
importLines.push(
routerImportLine(
mainRouteId,
path.posix.join(relativePath, main.oak),
),
);
} else {
routerLines.push(`const $${mainRouteId} = new Router();`);
}
if (main.react) {
importLines.push(
...routeImportLines(
routeId,
path.posix.join(relativePath, main.react),
),
);
routerLines.push(
`if (`,
` ($${routeId} as RouteFile).ErrorFallback || ($${routeId} as RouteFile).boundary`,
`) {`,
` const boundary = ($${routeId} as RouteFile).boundary${
relativePath ? ` ?? "/${relativePath}"` : ""
};`,
` boundaries.push(boundary);`,
` $${mainRouteId}.use(errorBoundary(boundary));`,
`} else {`,
` boundaries.push(boundaries[boundaries.length - 1]);`,
`}`,
);
routeId++;
}
} else {
routerLines.push(`const $${mainRouteId} = new Router();`);
if (!relativePath && react) {
routerLines.push(`$${mainRouteId}.use(errorBoundary());`);
}
}
if (index) {
if (index.react) {
importLines.push(
...routeImportLines(
routeId,
path.posix.join(relativePath, index.react),
),
);
routerLines.push(
`if (`,
` ($${routeId} as RouteFile).ErrorFallback || ($${routeId} as RouteFile).boundary`,
`) {`,
` $${mainRouteId}.use("/", errorBoundary(`,
` ($${routeId} as RouteFile).boundary ?? "/${
path.join(relativePath, "index")
}"`,
` ));`,
`}`,
);
routeId++;
}
if (index.oak) {
importLines.push(
routerImportLine(
routeId,
path.posix.join(relativePath, index.oak),
),
);
routerLines.push(
`$${mainRouteId}.use("/", $${routeId}.routes(), $${routeId}.allowedMethods());`,
);
routeId++;
} else if (react) {
routerLines.push(
`$${mainRouteId}.use("/", defaultRouter.routes(), defaultRouter.allowedMethods())`,
);
}
if (index.react || index.oak) {
routerLines.push(
`$${mainRouteId}.use("/", errorBoundary(boundaries[boundaries.length - 1]));`,
);
}
}
let notFoundRoute: Route | undefined = undefined;
for (const childRoute of Object.values(children ?? {})) {
if (childRoute.name === "[...]") {
notFoundRoute = childRoute;
continue;
}
const {
importLines: childImportLines,
routerLines: childRouterLines,
nextRouteId,
} = routerFileData(
mainRouteId,
routeId,
path.posix.join(relativePath, childRoute.name),
childRoute,
);
importLines.push(...childImportLines);
routerLines.push(...childRouterLines);
routeId = nextRouteId;
}
if (notFoundRoute) {
const {
importLines: childImportLines,
routerLines: childRouterLines,
nextRouteId,
} = routerFileData(
mainRouteId,
routeId,
path.posix.join(relativePath, notFoundRoute.name),
notFoundRoute,
);
importLines.push(...childImportLines);
routerLines.push(...childRouterLines);
routeId = nextRouteId;
}
if (relativePath === "") {
routerLines.push("", `export default $0;`);
} else {
routerLines.push(
`const $${mainRouteId}Main = ${
parent?.react && !react
? `createApiRouter($${mainRouteId})`
: `$${mainRouteId}`
};`,
);
routerLines.push(
`$${parentRouteId}.use("/${
routerPathFromName(name)
}", $${mainRouteId}Main.routes(), $${mainRouteId}Main.allowedMethods());`,
);
}
}
return {
importLines,
routerLines,
nextRouteId: routeId,
};
}
async function writeRoutes(path: string, text: string) {
const fmt = Deno.run({
cmd: ["deno", "fmt", "-"],
stdin: "piped",
stdout: "piped",
});
const encoder = new TextEncoder();
await fmt.stdin.write(encoder.encode(text));
fmt.stdin.close();
const [status, rawOutput] = await Promise.all([fmt.status(), fmt.output()]);
if (status.success) {
Deno.writeFile(path, rawOutput);
} else {
console.log("fmt routes failed", { path, ...status });
}
}
async function updateRoutes(routesUrl: string, rootRoute: Route) {
if (rootRoute.react) {
const lines = [
`import { lazy, withAppErrorBoundary, DefaultErrorFallback, NotFound, RouteFile } from "x/udibo_react_app/mod.tsx";`,
`import { RouteObject } from "npm/react-router-dom";`,
"",
];
const { importLines, routeText } = routeFileData(0, "", rootRoute);
lines.push(...importLines, "");
lines.push(`export default ${routeText} as RouteObject;`, "");
await writeRoutes(path.join(routesUrl, "_main.tsx"), lines.join("\n"));
}
const lines = [
`import { Router } from "x/oak/mod.ts";`,
`import { defaultRouter, createApiRouter, errorBoundary } from "x/udibo_react_app/server.tsx";`,
`import { RouteFile } from "x/udibo_react_app/mod.tsx";`,
"",
"const boundaries: (string | undefined)[] = [];",
];
const { importLines, routerLines } = routerFileData(-1, 0, "", rootRoute);
lines.push(...importLines, "", ...routerLines);
await writeRoutes(path.join(routesUrl, "_main.ts"), lines.join("\n"));
}
async function buildRoutes(routesUrl: string) {
const appRoute = await generateRoutes(routesUrl);
await updateRoutes(routesUrl, appRoute);
}
export interface BuildOptions {
/** The absolute path to the working directory for your application. */
workingDirectory: string;
/** The client entry point for your application relative to the workingDirectory. */
entryPoint: string;
/**
* Urls for all routes directories that your app uses.
* Each routes directory will have 2 files generated in them.
* - `_main.ts`: Contains the oak router for the routes.
* - `_main.tsx`: Contains the react router routes for controlling navigation in the app.
* Your server entrypoint should import and use both of the generated files for each routes directory.
* Your client entry point should only import the react router routes.
* In most cases, you will only need a single routesUrl.
*/
routesUrls: string[];
/**
* The application will serve all files from this directory.
* The build for your client entry point will be stored in public/build.
* Test builds will be stored in public/test-build.
*/
publicUrl: string;
/** File url for your import map. */
importMapUrl: string;
/**
* ESBuild plugins to use when building your application.
* These plugins will be added after the deno plugin.
*/
esbuildPlugins?: esbuild.Plugin[];
/**
* Called before building the application.
* This can be used to add additional steps before the build starts.
*/
preBuild?: (() => Promise<void>) | (() => void);
/**
* Called after building the application.
* This can be used to add additional steps after the build is completed.
*/
postBuild?: (() => Promise<void>) | (() => void);
}
/** Builds the application and all of it's routes. */
export async function build(options: BuildOptions) {
const { preBuild, postBuild } = options;
if (preBuild) await preBuild();
console.log("Building app");
performance.mark("buildStart");
let success = false;
try {
const {
entryPoint,
routesUrls,
publicUrl,
importMapUrl,
workingDirectory,
} = options;
const outdir = path.join(
publicUrl,
`${isTest() ? "test-" : ""}build`,
);
await ensureDir(outdir);
const importMapURL = path.toFileUrl(importMapUrl);
const buildOptions: esbuild.BuildOptions = isProduction()
? { minify: true }
: {
minifyIdentifiers: false,
minifySyntax: true,
minifyWhitespace: true,
jsxDev: true,
sourcemap: "linked",
};
for (const routesUrl of routesUrls) {
await buildRoutes(routesUrl);
}
const esbuildPlugins = options.esbuildPlugins ?? [];
await esbuild.build({
plugins: [
denoPlugin({ importMapURL }),
...esbuildPlugins,
],
absWorkingDir: workingDirectory,
entryPoints: [entryPoint],
outdir,
bundle: true,
splitting: true,
treeShaking: true,
platform: "neutral",
format: "esm",
jsx: "automatic",
jsxImportSource: "npm/react",
...buildOptions,
});
esbuild.stop();
success = true;
} catch {
// Ignore error, esbuild already logs it
} finally {
performance.mark("buildEnd");
const measure = performance.measure("build", "buildStart", "buildEnd");
console.log(
`Build ${success ? "completed" : "failed"} in ${
Math.round(measure.duration)
} ms`,
);
if (!success) Deno.exit(1);
}
if (postBuild) await postBuild();
return success;
}
if (import.meta.main) {
const cwd = Deno.cwd();
const entryPoint = "app.tsx";
const publicUrl = path.join(cwd, "public");
const routesUrl = path.join(cwd, "routes");
const importMapUrl = path.join(cwd, "import_map.json");
const success = await build({
workingDirectory: cwd,
entryPoint,
publicUrl,
routesUrls: [routesUrl],
importMapUrl,
});
if (!success) Deno.exit(1);
}