変えられる名前と、変えられない名前 — Rork で最初の1本を公開する前の30分

{
  "expo": {
    "name": "wallpaper",
    "slug": "wallpaper",
    "ios": { "bundleIdentifier": "com.anonymous.wallpaper" },
    "android": { "package": "com.anonymous.wallpaper" }
  }
}

// check-app-ids.mjs
import { readFileSync, existsSync } from "node:fs";
 
const RESERVED = new Set(["abstract","assert","boolean","break","byte","case","catch",
  "char","class","const","continue","default","do","double","else","enum","extends",
  "final","finally","float","for","goto","if","implements","import","instanceof","int",
  "interface","long","native","new","package","private","protected","public","return",
  "short","static","strictfp","super","switch","synchronized","this","throw","throws",
  "transient","try","void","volatile","while"]);
 
const PLACEHOLDER = [/^com\.anonymous\./i, /^host\.exp\./i, /^com\.example\./i,
  /\byourname\b/i, /\byourcompany\b/i, /\bmyapp\b/i, /\btest\b/i];
 
function readConfig(path) {
  if (!existsSync(path)) return null;
  const raw = JSON.parse(readFileSync(path, "utf8"));
  return raw.expo ?? raw;
}
 
function checkAndroidPackage(pkg) {
  const errs = [];
  if (!pkg) return ["android.package が未設定です"];
  const segs = pkg.split(".");
  if (segs.length < 2) errs.push("ドット区切りが2つ未満です");
  for (const s of segs) {
    if (!/^[a-zA-Z][a-zA-Z0-9_]*$/.test(s)) errs.push(`セグメント "${s}" が英字始まりの条件を満たしません`);
    if (RESERVED.has(s)) errs.push(`セグメント "${s}" は Java の予約語です`);
    if (/[A-Z]/.test(s)) errs.push(`セグメント "${s}" に大文字が含まれます`);
  }
  return errs;
}
 
function checkBundleId(id) {
  const errs = [];
  if (!id) return ["ios.bundleIdentifier が未設定です"];
  if (!/^[A-Za-z0-9.-]+$/.test(id)) errs.push("使用できない文字が含まれます");
  if (id.split(".").length < 2) errs.push("ドット区切りが2つ未満です");
  if (/_/.test(id)) errs.push("アンダースコアは使えません");
  return errs;
}
 
const path = process.argv[2] ?? "app.json";
const cfg = readConfig(path);
if (!cfg) { console.error(`✗ ${path} が見つかりません`); process.exit(2); }
 
const ios = cfg.ios?.bundleIdentifier;
const android = cfg.android?.package;
const findings = [];
 
for (const e of checkBundleId(ios)) findings.push(["BLOCK", "ios.bundleIdentifier", e]);
for (const e of checkAndroidPackage(android)) findings.push(["BLOCK", "android.package", e]);
 
for (const [key, val] of [["ios.bundleIdentifier", ios], ["android.package", android]]) {
  if (val && PLACEHOLDER.some((re) => re.test(val))) {
    findings.push(["BLOCK", key, `"${val}" は雛形のままの疑いがあります`]);
  }
}
if (ios && android && ios.toLowerCase() !== android.toLowerCase()) {
  findings.push(["WARN", "ios/android", `ID が一致しません（iOS: ${ios} / Android: ${android}）`]);
}
if (!cfg.name) findings.push(["WARN", "name", "表示名が未設定です"]);
if (!cfg.slug) findings.push(["WARN", "slug", "slug が未設定です"]);
 
console.log(`# ${path}`);
console.log(`  ios  : ${ios ?? "(なし)"}`);
console.log(`  and  : ${android ?? "(なし)"}`);
if (findings.length === 0) { console.log("✓ 公開前に固定してよい状態です"); process.exit(0); }
for (const [lv, key, msg] of findings) console.log(`  ${lv === "BLOCK" ? "✗" : "!"} [${lv}] ${key}: ${msg}`);
process.exit(findings.some(([lv]) => lv === "BLOCK") ? 1 : 0);

$ node check-app-ids.mjs a-default.json
# a-default.json
  ios  : com.anonymous.wallpaper
  and  : com.anonymous.wallpaper
  ✗ [BLOCK] ios.bundleIdentifier: "com.anonymous.wallpaper" は雛形のままの疑いがあります
  ✗ [BLOCK] android.package: "com.anonymous.wallpaper" は雛形のままの疑いがあります
exit=1
 
$ node check-app-ids.mjs b-mismatch.json
# b-mismatch.json
  ios  : net.dolice.calmwall
  and  : net.dolice.calm_wall
  ! [WARN] ios/android: ID が一致しません（iOS: net.dolice.calmwall / Android: net.dolice.calm_wall）
exit=0
 
$ node check-app-ids.mjs c-reserved.json
# c-reserved.json
  ios  : net.dolice.new.zentimer
  and  : net.dolice.new.zentimer
  ✗ [BLOCK] android.package: セグメント "new" は Java の予約語です
exit=1
 
$ node check-app-ids.mjs d-ok.json
# d-ok.json
  ios  : net.dolice.zentimer
  and  : net.dolice.zentimer
✓ 公開前に固定してよい状態です
exit=0