assignment 1

index.ts

@@ -0,0 +1,64 @@
+import browserslist from 'browserslist';
+import { transform, browserslistToTargets, Features } from 'lightningcss';
+import { readdir, rmdir, copyFile, mkdir, exists } from 'node:fs/promises';
+import { type Dirent } from 'node:fs';
+
+const assignmentDir = './assignments';
+const outDir = './.out';
+const ENABLE_TRANSPILE = false;
+
+const targets = browserslistToTargets(browserslist('last 2 versions, > 0.1%'));
+
+const handleAssignment = async (project: Dirent) => {
+  console.log(`transpiling project ${project.name}`);
+  if (!ENABLE_TRANSPILE) console.warn('WARNING: transpilation is disabled!!');
+
+  await mkdir(`${outDir}/assignments/${project.name}`, { recursive: true });
+
+  const files = await readdir(`${assignmentDir}/${project.name}`, { withFileTypes: true, recursive: true }).then(n =>
+    n.filter(f => f.isFile()).map(f => (f.name.endsWith('.css') ? transpileCss(f) : copy(f))),
+  );
+
+  await Promise.all(files);
+  console.log(`transpiled project ${project.name}`);
+};
+
+const copy = async ({ name, parentPath }: { name: string; parentPath: string }) => {
+  console.log(`copying file ${name}`);
+  if (!(await exists(`${outDir}/${parentPath}}`))) await mkdir(`${outDir}/${parentPath}`, { recursive: true });
+  await copyFile(`./${parentPath}/${name}`, `${outDir}/${parentPath}/${name}`);
+};
+
+const transpileCss = async ({ name, parentPath }: { name: string; parentPath: string }) => {
+  if (!ENABLE_TRANSPILE) return copy({ name, parentPath });
+
+  console.log(`transpiling css file ${name}`);
+  const content = await Bun.file(`./${parentPath}/${name}`).arrayBuffer();
+  const { code, map } = transform({
+    filename: name,
+    code: Buffer.from(content),
+    minify: false,
+    sourceMap: false,
+    exclude: Features.Nesting,
+    targets,
+  });
+
+  await Bun.write(`${outDir}/${parentPath}/${name}`, code);
+  if (map) await Bun.write(`${outDir}/${parentPath}/${name}.map`, map);
+};
+
+await rmdir(outDir, { recursive: true });
+
+const ignores = await Bun.file('.gitignore')
+  .text()
+  .then(n =>
+    n
+      .split('\n')
+      .filter(Boolean)
+      .filter(n => !n.startsWith('#')),
+  );
+const assignments = await readdir(assignmentDir, { withFileTypes: true }).then(n =>
+  n.filter(f => f.isDirectory() && !f.name.startsWith('.') && !ignores.includes(f.name)).map(handleAssignment),
+);
+
+await Promise.all(assignments);