107 lines
3.2 KiB
JavaScript
107 lines
3.2 KiB
JavaScript
#!/usr/bin/env node
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/**
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* Simple ES-module → IIFE bundler for GrechkaCraft
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* Resolves import/export, wraps in single IIFE, no external deps.
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* Usage: node build.js > game.js
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*/
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const fs = require('fs');
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const path = require('path');
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const SRC = path.join(__dirname, 'src');
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const ENTRY = 'main.js';
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const visited = new Set();
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const chunks = [];
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const fileExports = {};
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const fileImports = {};
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function resolveImportPath(fromPath, importerDir) {
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let resolved = path.resolve(importerDir, fromPath);
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if (!fs.existsSync(resolved) && fs.existsSync(resolved + '.js')) {
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resolved += '.js';
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}
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return resolved;
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}
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function collectExports(content) {
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const exports = [];
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const re1 = /export\s*\{([^}]+)\}/g;
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let m;
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while ((m = re1.exec(content)) !== null) {
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const names = m[1].split(',').map(s => {
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const parts = s.trim().split(/\s+as\s+/);
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return { local: parts[0].trim(), exported: (parts[1] || parts[0]).trim() };
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});
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exports.push(...names);
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}
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const re2 = /export\s+(?:async\s+)?(?:const|let|var|function|class)\s+(\w+)/g;
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while ((m = re2.exec(content)) !== null) {
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exports.push({ local: m[1], exported: m[1] });
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}
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if (/export\s+default\s+/.test(content)) {
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exports.push({ local: '__default__', exported: 'default' });
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}
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return exports;
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}
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function collectImports(content) {
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const imports = [];
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const re = /import\s*\{([^}]+)\}\s*from\s*['"]([^'"]+)['"]/g;
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let m;
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while ((m = re.exec(content)) !== null) {
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const names = m[1].split(',').map(s => {
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const parts = s.trim().split(/\s+as\s+/);
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return { local: (parts[1] || parts[0]).trim(), imported: parts[0].trim() };
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});
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imports.push({ names, from: m[2] });
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}
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const re2 = /import\s+(\w+)\s+from\s*['"]([^'"]+)['"]/g;
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while ((m = re2.exec(content)) !== null) {
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imports.push({ names: [{ local: m[1], imported: 'default' }], from: m[2] });
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}
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return imports;
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}
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function processFile(filePath) {
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const relPath = path.relative(SRC, filePath);
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if (visited.has(relPath)) return;
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visited.add(relPath);
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let content = fs.readFileSync(filePath, 'utf8');
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const dir = path.dirname(filePath);
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fileExports[relPath] = collectExports(content);
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fileImports[relPath] = collectImports(content);
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for (const imp of fileImports[relPath]) {
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const depPath = resolveImportPath(imp.from, dir);
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processFile(depPath);
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}
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// Strip import statements
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content = content.replace(/import\s*\{[^}]+\}\s*from\s*['"][^'"]+['"];?/g, '');
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content = content.replace(/import\s+\w+\s+from\s*['"][^'"]+['"];?/g, '');
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// Strip export keyword but keep declarations
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content = content.replace(/export\s+default\s+/, 'const __default__ = ');
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content = content.replace(/export\s+(?:async\s+)?(const|let|var|function|class)\s/g, '$1 ');
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content = content.replace(/export\s*\{[^}]*\};?/g, '');
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chunks.push({ relPath, content });
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}
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processFile(path.join(SRC, ENTRY));
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let output = '// GrechkaCraft — auto-bundled from ES modules\n';
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output += '(function() {\n';
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output += '"use strict";\n\n';
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for (const chunk of chunks) {
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output += `// === ${chunk.relPath} ===\n`;
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output += chunk.content.trim();
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output += '\n\n';
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}
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output += '})();\n';
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process.stdout.write(output); |