generate-entrypoint.mts

import assert from "node:assert/strict";
import fs from "node:fs";
import path from "node:path";

const packageRoot = path.join(import.meta.dirname, "..");
const entrypointPath = path.join(packageRoot, "tests.generated.js");

const testPaths = fs.globSync("**/*.bundle.js", {
  cwd: path.join(packageRoot, "tests"),
});

interface TestSuite {
  [key: string]: string | TestSuite;
}

const suites: TestSuite = {};

for (const testPath of testPaths) {
  const paths = testPath.split(path.sep);
  const testName = paths.pop();
  assert(typeof testName === "string");
  let parent: TestSuite = suites;
  for (const part of paths) {
    if (!parent[part]) {
      // Init if missing
      parent[part] = {};
    }
    assert(typeof parent[part] === "object");
    parent = parent[part];
  }
  parent[path.basename(testName, ".bundle.js")] = path.join("tests", testPath);
}

function suiteToString(suite: TestSuite, indent = 1): string {
  const padding = "  ".repeat(indent);
  return Object.entries(suite)
    .map(([key, value]) => {
      if (typeof value === "string") {
        return `${padding}"${key}": require("./${value}")`;
      } else {
        return `${padding}"${key}": {\n${suiteToString(
          value,
          indent + 1,
        )}\n${padding}}`;
      }
    })
    .join(", ");
}

const comment = "Generated by ./scripts/generate-entrypoint.mts";

console.log(
  `Writing entrypoint to ${path.relative(
    import.meta.dirname,
    entrypointPath,
  )} for ${testPaths.length} tests ...`,
);

fs.writeFileSync(
  entrypointPath,
  `/* ${comment} */\nmodule.exports.suites = {\n${suiteToString(suites)}\n};`,
);