Alex Gleason
dc43f723fb
src/lib/countries.ts imported the full iso-3166 package solely to build a Set of valid ISO 3166-2 subdivision codes for validation. That dataset (~5000 objects with names, parents, and tree structure) landed in the eagerly-preloaded countries chunk because NoteContent, ComposeBox, and campaign.ts all import from countries.ts on the critical path. Ship only the subdivision code strings instead, generated at build time into src/lib/subdivisionCodes.ts via scripts/gen-subdivision-codes.mjs. iso-3166 moves to devDependencies since only the generator script needs it now. The strict-validation contract (rejecting US-ZZ etc.) is preserved.
40 lines
1.7 KiB
JavaScript
40 lines
1.7 KiB
JavaScript
// Generate src/lib/subdivisionCodes.ts — the authoritative list of ISO 3166-2
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// subdivision codes, extracted from the `iso-3166` package.
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//
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// We ship only the code strings (~42 KB) instead of importing the full
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// `iso-3166` dataset (~244 KB of objects with names, parents, and tree
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// structure) into the critical-path bundle. The only thing the runtime needs
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// these for is validating that a `CC-XX` code is a real subdivision
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// (see src/lib/countries.ts `isValidSubdivisionCode`).
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//
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// Run with: node scripts/gen-subdivision-codes.mjs
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import fs from 'node:fs';
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import path from 'node:path';
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import { fileURLToPath } from 'node:url';
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import { iso31662 } from 'iso-3166';
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const __dirname = path.dirname(fileURLToPath(import.meta.url));
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const REPO_ROOT = path.resolve(__dirname, '..');
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const OUTPUT = path.join(REPO_ROOT, 'src/lib/subdivisionCodes.ts');
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const codes = [...new Set(iso31662.map((s) => s.code))].sort();
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const header = `// AUTO-GENERATED — do not edit by hand.
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//
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// The authoritative list of ISO 3166-2 subdivision codes, extracted from the
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// \`iso-3166\` package at build time. We ship only the code strings (~42 KB)
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// instead of importing the full \`iso-3166\` dataset (~244 KB of objects with
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// names, parents, and tree structure) into the critical-path bundle, since
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// the only thing the runtime needs these for is validating that a \`CC-XX\`
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// code is a real subdivision.
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//
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// Regenerate with: node scripts/gen-subdivision-codes.mjs
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`;
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const body = `export const SUBDIVISION_CODES: readonly string[] = ${JSON.stringify(codes)};\n`;
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fs.writeFileSync(OUTPUT, header + body);
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console.log(`Wrote ${path.relative(REPO_ROOT, OUTPUT)} (${codes.length} codes)`);
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