Diffusion Ant (feature/nursery) Code

ant/examples/test262/index.js
ddfe6237cab5feature/nursery

index.js
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			import fs from 'fs';
			import { join } from 'path';

			const basePath = import.meta.dirname;
			const indexPath = join(basePath, 'ant.json');

			const data = JSON.parse(fs.readFileSync(indexPath, 'utf8'));
			const entries = Object.entries(data.passes).sort();

			const stats = {
			total: entries.length,
			passed: entries.filter(([_, v]) => v).length,
			failed: entries.filter(([_, v]) => !v).length,
			get rate() {
			return ((this.passed / this.total) * 100).toFixed(2);
			}
			};

			const ESC = '\x1b';
			const CSI = `${ESC}[`;

			const term = {
			hideCursor: `${CSI}?25l`,
			showCursor: `${CSI}?25h`,
			altScreenOn: `${CSI}?1049h`,
			altScreenOff: `${CSI}?1049l`,
			syncStart: `${CSI}?2026h`,
			syncEnd: `${CSI}?2026l`,
			home: `${CSI}H`,
			clearScreen: `${CSI}2J`,
			reset: `${CSI}0m`,
			bold: `${CSI}1m`,
			dim: `${CSI}2m`,
			fg: n => `${CSI}38;5;${n}m`,
			bg: n => `${CSI}48;5;${n}m`
			};

			const c = {
			reset: term.reset,
			bold: term.bold,
			dim: term.dim,
			red: term.fg(196),
			green: term.fg(82),
			yellow: term.fg(226),
			blue: term.fg(39),
			cyan: term.fg(51),
			gray: term.fg(245),
			bgSelect: term.bg(24)
			};

			let state = {
			mode: 'browse',
			index: 0,
			filter: '',
			filtered: entries,
			searchMode: false,
			searchQuery: ''
			};

			let fps = {
			frames: 0,
			lastTime: performance.now(),
			current: 0,
			update() {
			this.frames++;
			const now = performance.now();
			const delta = now - this.lastTime;
			if (delta >= 1000) {
			this.current = Math.round((this.frames * 1000) / delta);
			this.frames = 0;
			this.lastTime = now;
			}
			}
			};

			function fmt(bytes) {
			if (bytes < 1024) return bytes + ' B';
			if (bytes < 1024 * 1024) return (bytes / 1024).toFixed(2) + ' KB';
			return (bytes / 1024 / 1024).toFixed(2) + ' MB';
			}

			function getRows() {
			return process.stdout.rows \|\| 24;
			}
			function getCols() {
			return process.stdout.columns \|\| 80;
			}

			function pad(str, len) {
			const visible = str.replace(/\x1b\[[0-9;]*m/g, '');
			return str + ' '.repeat(Math.max(0, len - visible.length));
			}

			function truncate(str, len) {
			if (str.length <= len) return str;
			return str.slice(0, len - 1) + '…';
			}

			function buildScreen() {
			const rows = getRows();
			const cols = getCols();
			const lines = [];

			if (state.mode === 'browse') {
			const headerWidth = Math.min(cols, 68);
			lines.push(`${c.bold}${c.blue}${'═'.repeat(headerWidth)}${c.reset}`);
			lines.push(`${c.bold}${c.blue} Test262 Results Visualizer${c.reset}`);
			lines.push(`${c.bold}${c.blue}${'═'.repeat(headerWidth)}${c.reset}`);
			lines.push('');

			const rateColor = stats.rate >= 80 ? c.green : stats.rate >= 50 ? c.yellow : c.red;
			lines.push(
			`${c.bold}Total:${c.reset} ${stats.total} ${c.green}Pass:${c.reset} ${stats.passed} ${c.red}Fail:${c.reset} ${stats.failed} ${rateColor}${stats.rate}%${c.reset}`
			);
			lines.push('');

			const filterLabel = state.filter === 'pass' ? 'PASS' : state.filter === 'fail' ? 'FAIL' : 'ALL';
			lines.push(`${c.dim}Filter: [${filterLabel}] · ${state.filtered.length}/${stats.total} tests${c.reset}`);

			if (state.searchMode) {
			lines.push(`${c.cyan}Search: ${state.searchQuery}█${c.reset}`);
			} else {
			lines.push(`${c.dim}↑↓ nav · p/f/a filter · s stats · m memory · / search · q quit${c.reset}`);
			}
			lines.push('');

			const headerLines = lines.length;
			const footerLines = 2;
			const listHeight = Math.max(1, rows - headerLines - footerLines);

			const total = state.filtered.length;
			const idx = state.index;
			const half = Math.floor(listHeight / 2);
			let start = Math.max(0, idx - half);
			let end = start + listHeight;
			if (end > total) {
			end = total;
			start = Math.max(0, end - listHeight);
			}

			for (let i = start; i < end; i++) {
			const [name, passed] = state.filtered[i];
			const icon = passed ? `${c.green}✓${c.reset}` : `${c.red}✗${c.reset}`;
			const displayName = truncate(name, cols - 4);

			if (i === idx) {
			lines.push(`${c.bgSelect}${c.bold} ${icon} ${pad(displayName, cols - 4)}${c.reset}`);
			} else {
			lines.push(` ${icon} ${displayName}`);
			}
			}

			while (lines.length < rows - footerLines) {
			lines.push('');
			}

			lines.push('');
			lines.push(`${c.dim}[${idx + 1}/${total}]${c.reset} ${c.cyan}${fps.current} fps${c.reset}`);
			} else if (state.mode === 'stats') {
			const headerWidth = Math.min(cols, 68);
			lines.push(`${c.bold}${c.blue}${'═'.repeat(headerWidth)}${c.reset}`);
			lines.push(`${c.bold} Results by Category${c.reset}`);
			lines.push(`${c.bold}${c.blue}${'═'.repeat(headerWidth)}${c.reset}`);
			lines.push('');

			const categories = {};
			entries.forEach(([name, passed]) => {
			const cat = name.split('/')[0];
			if (!categories[cat]) categories[cat] = { total: 0, passed: 0 };
			categories[cat].total++;
			if (passed) categories[cat].passed++;
			});

			const sorted = Object.entries(categories).sort((a, b) => b[1].passed - a[1].passed);
			const maxCatLen = Math.min(30, Math.max(...sorted.map(([k]) => k.length)));

			for (const [cat, s] of sorted) {
			const rate = ((s.passed / s.total) * 100).toFixed(0);
			const color = rate >= 80 ? c.green : rate >= 50 ? c.yellow : c.red;
			const barWidth = 20;
			const filled = Math.round((s.passed / s.total) * barWidth);
			const bar = `${c.green}${'█'.repeat(filled)}${c.dim}${'░'.repeat(barWidth - filled)}${c.reset}`;

			lines.push(
			`${truncate(cat, maxCatLen).padEnd(maxCatLen)} ${bar} ${s.passed.toString().padStart(5)}/${s.total.toString().padEnd(5)} ${color}${rate.padStart(3)}%${c.reset}`
			);
			}

			while (lines.length < rows - 2) {
			lines.push('');
			}

			lines.push('');
			lines.push(`${c.dim}s browse · q quit${c.reset}`);
			} else if (state.mode === 'memory') {
			const mem = Ant.stats();
			const headerWidth = Math.min(cols, 68);
			lines.push(`${c.bold}${c.blue}${'═'.repeat(headerWidth)}${c.reset}`);
			lines.push(`${c.bold} Memory Usage${c.reset}`);
			lines.push(`${c.bold}${c.blue}${'═'.repeat(headerWidth)}${c.reset}`);
			lines.push('');

			lines.push(`${c.cyan}Arena${c.reset}`);
			lines.push(` Used: ${c.bold}${fmt(mem.arenaUsed)}${c.reset}`);
			lines.push(` Size: ${c.bold}${fmt(mem.arenaSize)}${c.reset}`);
			lines.push('');

			lines.push(`${c.cyan}Process${c.reset}`);
			lines.push(` RSS: ${c.bold}${fmt(mem.rss)}${c.reset}`);
			if (mem.virtualSize) {
			lines.push(` Virtual: ${c.bold}${fmt(mem.virtualSize)}${c.reset}`);
			}
			lines.push('');

			lines.push(`${c.cyan}C Stack${c.reset}`);
			lines.push(` Max: ${c.bold}${fmt(mem.cstack)}${c.reset}`);
			lines.push('');

			lines.push(`${c.dim}Press 'g' to run GC${c.reset}`);

			while (lines.length < rows - 2) {
			lines.push('');
			}

			lines.push('');
			lines.push(`${c.dim}m browse · g gc · q quit${c.reset}`);
			}

			return lines.map(l => pad(l, cols)).join('\n');
			}

			function render() {
			fps.update();
			const screen = buildScreen();
			process.stdout.write(`${term.syncStart}${term.hideCursor}${term.home}${screen}${term.syncEnd}`);
			}

			function applyFilter(filter) {
			state.filter = filter;
			if (filter === 'pass') {
			state.filtered = entries.filter(([_, v]) => v);
			} else if (filter === 'fail') {
			state.filtered = entries.filter(([_, v]) => !v);
			} else {
			state.filtered = entries;
			}
			state.index = Math.min(state.index, Math.max(0, state.filtered.length - 1));
			}

			function applySearch(query) {
			if (!query) {
			state.filtered = entries;
			} else {
			const q = query.toLowerCase();
			state.filtered = entries.filter(([name]) => name.toLowerCase().includes(q));
			}
			state.index = 0;
			}

			function handleKey(key) {
			let needsRender = false;
			if (state.searchMode) {
			if (key === '\r' \|\| key === '\n') {
			state.searchMode = false;
			applySearch(state.searchQuery);
			needsRender = true;
			} else if (key === '\x1b') {
			state.searchMode = false;
			state.searchQuery = '';
			needsRender = true;
			} else if (key === '\x7f' \|\| key === '\b') {
			state.searchQuery = state.searchQuery.slice(0, -1);
			needsRender = true;
			} else if (key.length === 1 && key >= ' ') {
			state.searchQuery += key;
			needsRender = true;
			}
			return needsRender;
			}

			switch (key) {
			case 'q':
			case '\x03':
			cleanup();
			break;
			case '\x1b[A':
			case 'k':
			state.index = Math.max(0, state.index - 1);
			needsRender = true;
			break;
			case '\x1b[B':
			case 'j':
			state.index = Math.min(state.filtered.length - 1, state.index + 1);
			needsRender = true;
			break;
			case '\x1b[5~':
			state.index = Math.max(0, state.index - 10);
			needsRender = true;
			break;
			case '\x1b[6~':
			state.index = Math.min(state.filtered.length - 1, state.index + 10);
			needsRender = true;
			break;
			case 'g':
			if (state.mode === 'memory') {
			Ant.gc();
			} else {
			state.index = 0;
			}
			needsRender = true;
			break;
			case 'G':
			state.index = state.filtered.length - 1;
			needsRender = true;
			break;
			case 'p':
			if (state.mode === 'browse') {
			applyFilter('pass');
			needsRender = true;
			}
			break;
			case 'f':
			if (state.mode === 'browse') {
			applyFilter('fail');
			needsRender = true;
			}
			break;
			case 'a':
			if (state.mode === 'browse') {
			applyFilter('');
			needsRender = true;
			}
			break;
			case 's':
			state.mode = state.mode === 'browse' ? 'stats' : 'browse';
			needsRender = true;
			break;
			case 'm':
			state.mode = state.mode === 'memory' ? 'browse' : 'memory';
			needsRender = true;
			break;
			case '/':
			if (state.mode === 'browse') {
			state.searchMode = true;
			state.searchQuery = '';
			needsRender = true;
			}
			break;
			}

			return needsRender;
			}

			function cleanup() {
			process.stdout.write(`${term.showCursor}${term.altScreenOff}`);
			process.stdin.setRawMode(false);
			process.stdin.pause();
			process.exit(0);
			}

			if (!process.stdin.isTTY \|\| !process.stdout.isTTY) {
			console.log(`Total: ${stats.total}\nPassed: ${stats.passed}\nFailed: ${stats.failed}\nRate: ${stats.rate}%`);
			process.exit(0);
			}

			process.stdin.setRawMode(true);
			process.stdin.resume();
			process.stdout.write(`${term.altScreenOn}${term.hideCursor}`);

			let inputBuf = '';
			process.stdin.on('data', chunk => {
			const str = chunk.toString();
			let needsRender = false;

			for (const ch of str) {
			if (inputBuf.length > 0) {
			inputBuf += ch;
			if (inputBuf.length >= 3 && /[A-Za-z~]/.test(ch)) {
			needsRender = handleKey(inputBuf) \|\| needsRender;
			inputBuf = '';
			}
			} else if (ch === '\x1b') {
			inputBuf = ch;
			} else {
			needsRender = handleKey(ch) \|\| needsRender;
			}
			}

			if (needsRender) {
			render();
			}
			});

			process.stdout.on('resize', render);
			process.on('SIGINT', cleanup);
			process.on('SIGTERM', cleanup);

			render();

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