fix: search parent directories for tsconfig.json

Also switches `cli.ts` from `Deno` to `process` (#39)

src/cli.ts

@@ -1,34 +1,37 @@
 #!/usr/bin/env -S deno run --no-prompt --allow-read=. --allow-write=lib/
 import { existsSync } from "node:fs";
+import * as process from "node:process";
 import { ts } from "./deps.deno.ts";
 import { getHelpText } from "./help.ts";
 import { getVersion, initializeProject } from "./init.ts";
 import { Context, deno2node, emit } from "./mod.ts";
 
-const { options, fileNames, errors } = ts.parseCommandLine(Deno.args);
-const tsConfigFilePath = options.project ?? ts.findConfigFile(".", existsSync);
+const args = process.argv.slice(2);
+const { options, fileNames, errors } = ts.parseCommandLine(args);
+const tsConfigFilePath = options.project ??
+  ts.findConfigFile(process.cwd(), existsSync);
 
 if (errors.length) {
   for (const error of errors) {
     console.error(error.messageText);
   }
-  Deno.exit(2);
+  process.exit(2);
 }
 
 if (options.help) {
   console.log(getHelpText(await getVersion()));
-  Deno.exit(0);
+  process.exit(0);
 }
 
 if (options.version) {
   console.log("deno2node", await getVersion());
   console.log("typescript", ts.version);
-  Deno.exit(0);
+  process.exit(0);
 }
 
 if (options.init) {
   await initializeProject();
-  Deno.exit(0);
+  process.exit(0);
 }
 
 const ctx = new Context({
@@ -44,7 +47,7 @@ if (fileNames.length) {
   ctx.project.addSourceFilesFromTsConfig(tsConfigFilePath);
 } else {
   console.error("Specify entry points.");
-  Deno.exit(2);
+  process.exit(2);
 }
 ctx.project.resolveSourceFileDependencies();
 console.timeEnd("Loading source files");
@@ -58,5 +61,5 @@ if (diagnostics.length !== 0) {
   console.info(ctx.project.formatDiagnosticsWithColorAndContext(diagnostics));
   console.info("TypeScript", ts.version);
   console.info(`Found ${diagnostics.length} errors.`);
-  Deno.exit(1);
+  process.exit(1);
 }

src/shim.node.ts

@@ -1,27 +1,21 @@
 // Node-only, see https://github.com/fromdeno/deno2node#shimming
 import { test } from "@deno/shim-deno-test";
 import { chmod, readFile } from "node:fs/promises";
-import process from "node:process";
+import * as process from "node:process";
 import { isatty } from "node:tty";
 
 const os = process.platform === "win32" ? "windows" : process.platform;
 
 export const Deno = {
   // please keep sorted
-  args: process.argv.slice(2),
   build: { os },
   chmod,
-  exit: process.exit,
   isatty,
   noColor: process.env.NO_COLOR !== undefined,
   stdout: { rid: process.stdout.fd },
   test,
 };
 
 export async function fetch(fileUrl: URL) {
-  const data = await readFile(fileUrl, { encoding: "utf-8" });
-  return {
-    json: () => JSON.parse(data),
-    text: () => data,
-  };
+  return new Response(await readFile(fileUrl));
 }