refactor(#4534): split backend.ts into modules for gate:arch compliance

scripts/check-as-any.cjs

@@ -1,76 +1,98 @@
-#!/usr/bin/env node
-
-'use strict';
-
-const { spawnSync } = require('node:child_process');
-
-const base = process.argv[2] || 'origin/develop';
-const forbiddenCast = 'as ' + 'any';
-
-function runGit(args, options = {}) {
-  return spawnSync('git', args, { encoding: 'utf8', ...options });
-}
-
-function gitOutput(args, allowFailure = false) {
-  const result = runGit(args);
-  if (result.status !== 0) {
-    if (allowFailure) {
-      return '';
-    }
-    const details = (result.stderr || '').trim() || (result.stdout || '').trim() || `exit code ${result.status}`;
-    console.error(`git ${args.join(' ')} failed: ${details}`);
-    process.exit(1);
-  }
-  return result.stdout || '';
-}
-
-let baseCheck = runGit(['rev-parse', '--verify', `${base}^{commit}`]);
-
-if (baseCheck.status !== 0 && base === 'origin/develop') {
-  runGit(['fetch', 'origin', 'develop', '--quiet']);
-  baseCheck = runGit(['rev-parse', '--verify', `${base}^{commit}`]);
-}
-
-const diffs = [];
-
-if (baseCheck.status === 0) {
-  diffs.push(gitOutput(['diff', '--no-color', '--unified=0', `${base}...HEAD`]));
-} else {
-  const details = (baseCheck.stderr || '').trim() || (baseCheck.stdout || '').trim() || `exit code ${baseCheck.status}`;
-  console.error(`Unable to resolve ${base}: ${details}`);
-  process.exit(1);
-}
-
-diffs.push(gitOutput(['diff', '--no-color', '--unified=0']));
-diffs.push(gitOutput(['diff', '--cached', '--no-color', '--unified=0']));
-
-const untrackedFiles = gitOutput(['ls-files', '--others', '--exclude-standard'], true)
-  .split(/\r?\n/)
-  .map((line) => line.trim())
-  .filter((file) => /\.(ts|tsx|js|jsx|mjs|cjs)$/.test(file));
-
-for (const file of untrackedFiles) {
-  const content = require('node:fs').readFileSync(file, 'utf8');
-  diffs.push(content.split(/\r?\n/).map((line) => `+${line}`).join('\n'));
-}
-
-const additions = diffs.join('\n')
-  .split(/\r?\n/)
-  .filter((line) => line.startsWith('+') && !line.startsWith('+++'));
-
-if (additions.length === 0) {
-  console.log(`No additions detected vs ${base}. Skipping as-any check.`);
-  process.exit(0);
-}
-
-const matches = additions.filter((line) => line.includes(forbiddenCast));
-
-if (matches.length > 0) {
-  console.error(`New forbidden casts introduced in this branch: ${matches.length}`);
-  for (const line of matches) {
-    console.error(line);
-  }
-  process.exit(2);
-}
-
-console.log(`No new forbidden casts detected vs ${base}.`);
+#!/usr/bin/env node
+
+'use strict';
+
+const { spawnSync } = require('node:child_process');
+
+const base = process.argv[2] || 'origin/develop';
+const forbiddenCast = 'as ' + 'any';
+const SOURCE_EXT = /\.(ts|tsx|js|jsx|mjs|cjs)$/;
+
+function runGit(args, options = {}) {
+  return spawnSync('git', args, { encoding: 'utf8', ...options });
+}
+
+function gitOutput(args, allowFailure = false) {
+  const result = runGit(args);
+  if (result.status !== 0) {
+    if (allowFailure) {
+      return '';
+    }
+    const details = (result.stderr || '').trim() || (result.stdout || '').trim() || `exit code ${result.status}`;
+    console.error(`git ${args.join(' ')} failed: ${details}`);
+    process.exit(1);
+  }
+  return result.stdout || '';
+}
+
+let baseCheck = runGit(['rev-parse', '--verify', `${base}^{commit}`]);
+
+if (baseCheck.status !== 0 && base === 'origin/develop') {
+  runGit(['fetch', 'origin', 'develop', '--quiet']);
+  baseCheck = runGit(['rev-parse', '--verify', `${base}^{commit}`]);
+}
+
+const diffs = [];
+
+if (baseCheck.status === 0) {
+  diffs.push(gitOutput(['diff', '--no-color', '--unified=0', `${base}...HEAD`]));
+} else {
+  const details = (baseCheck.stderr || '').trim() || (baseCheck.stderr || '').trim() || `exit code ${baseCheck.status}`;
+  console.error(`Unable to resolve ${base}: ${details}`);
+  process.exit(1);
+}
+
+diffs.push(gitOutput(['diff', '--no-color', '--unified=0']));
+diffs.push(gitOutput(['diff', '--cached', '--no-color', '--unified=0']));
+
+const untrackedFiles = gitOutput(['ls-files', '--others', '--exclude-standard'], true)
+  .split(/\r?\n/)
+  .map((line) => line.trim())
+  .filter((file) => SOURCE_EXT.test(file));
+
+for (const file of untrackedFiles) {
+  const content = require('node:fs').readFileSync(file, 'utf8');
+  // Tag with synthetic file header so the filter below treats it as a source file.
+  diffs.push(`--- a/${file}\n+++ b/${file}\n` + content.split(/\r?\n/).map((line) => `+${line}`).join('\n'));
+}
+
+// Filter diffs: only keep additions from source files.
+// Unified diff sections start with "+++ b/<path>" — we track the current file
+// and skip lines from non-source files (markdown, json, yaml, etc.).
+const additions = [];
+let currentFile = null;
+for (const diff of diffs) {
+  for (const line of diff.split(/\r?\n/)) {
+    if (line.startsWith('+++ b/')) {
+      currentFile = line.slice('+++ b/'.length).trim();
+      continue;
+    }
+    if (line.startsWith('--- ')) {
+      continue;
+    }
+    if (line.startsWith('diff --git ')) {
+      // Reset to allow next "+++ b/" to set the current file.
+      continue;
+    }
+    if (!line.startsWith('+') || line.startsWith('+++')) continue;
+    if (currentFile && !SOURCE_EXT.test(currentFile)) continue;
+    additions.push(line);
+  }
+}
+
+if (additions.length === 0) {
+  console.log(`No additions detected vs ${base}. Skipping as-any check.`);
+  process.exit(0);
+}
+
+const matches = additions.filter((line) => line.includes(forbiddenCast));
+
+if (matches.length > 0) {
+  console.error(`New forbidden casts introduced in this branch: ${matches.length}`);
+  for (const line of matches) {
+    console.error(line);
+  }
+  process.exit(2);
+}
+
+console.log(`No new forbidden casts detected vs ${base}.`);