refactor changes

shared/bin/sync-fonts.mjs

@@ -0,0 +1,74 @@
+#!/usr/bin/env node
+// Copies this package's font files into an app's public/fonts, or checks that they already match.
+//
+// The copies exist because both apps' `src-tauri/src/pdf.rs` reads the same files with
+// `include_bytes!`, so the bytes have to be on disk at a path cargo can see before any npm install
+// has run. Serving them out of node_modules would mean a cargo build that fails on a fresh clone
+// until the front end was installed, which is a worse trade than a vendored copy with a named
+// upstream and a check that fails loudly when the two drift.
+//
+//   node bin/sync-fonts.mjs <app-dir>            copy, reporting what changed
+//   node bin/sync-fonts.mjs <app-dir> --check    compare only, exit 1 on any difference
+
+import { readdirSync, readFileSync, writeFileSync, mkdirSync, existsSync } from "node:fs";
+import { dirname, join, resolve } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const here = dirname(fileURLToPath(import.meta.url));
+const source = resolve(here, "..", "fonts");
+
+const args = process.argv.slice(2);
+const check = args.includes("--check");
+const target = args.find((a) => !a.startsWith("--"));
+
+if (!target) {
+  console.error("usage: sync-fonts.mjs <app-dir> [--check]");
+  process.exit(2);
+}
+
+const dest = resolve(process.cwd(), target, "public", "fonts");
+const files = readdirSync(source).filter((f) => f.endsWith(".ttf") || f.endsWith(".txt")).sort();
+
+if (!check) mkdirSync(dest, { recursive: true });
+
+const wrong = [];
+let copied = 0;
+
+for (const file of files) {
+  const from = join(source, file);
+  const to = join(dest, file);
+  const want = readFileSync(from);
+  const have = existsSync(to) ? readFileSync(to) : null;
+
+  if (have !== null && have.equals(want)) continue;
+
+  if (check) {
+    wrong.push(`${have === null ? "missing" : "differs"}: ${file}`);
+    continue;
+  }
+  writeFileSync(to, want);
+  copied += 1;
+}
+
+// A file the app has and the package does not is reported rather than deleted. It is far more
+// likely to be a face somebody is in the middle of adding than something to throw away, and this
+// script does not get to be the reason an asset disappears.
+if (existsSync(dest)) {
+  for (const file of readdirSync(dest)) {
+    if (!files.includes(file)) wrong.push(`not in the package, left alone: ${file}`);
+  }
+}
+
+if (check) {
+  if (wrong.length === 0) {
+    console.log(`fonts match margin-shared (${files.length} files)`);
+    process.exit(0);
+  }
+  console.error("public/fonts is out of step with margin-shared:");
+  for (const line of wrong) console.error(`  ${line}`);
+  console.error("\nrun: pnpm fonts:sync");
+  process.exit(1);
+}
+
+console.log(copied === 0 ? `fonts already current (${files.length} files)` : `synced ${copied} file(s)`);
+for (const line of wrong) console.log(`  note: ${line}`);