Diffusion Ant (type-hints-typescript) Code

ant/examples/test262/index.js
899dad6b8a9etype-hints-typescript

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

			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,
			memoryCache: null,
			memoryOffset: 0,
			memoryStatus: '',
			memoryStatusAt: 0,
			fullClearNextRender: false,
			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) + '…';
			}

			const byteStatSuffixes = new Set([
			'used',
			'capacity',
			'totalUsed',
			'totalCapacity',
			'objects',
			'overflow',
			'extraSlots',
			'promises',
			'proxies',
			'exotic',
			'arrays',
			'shapes',
			'closures',
			'upvalues',
			'propRefs',
			'total',
			'buffers',
			'code',
			'bytes',
			'used',
			'limit',
			'rss',
			'residentSize',
			'physFootprint',
			'virtualSize'
			]);

			function formatStatValue(path, value, styled = true) {
			if (typeof value === 'number') {
			const key = path.split('.').pop();
			if (byteStatSuffixes.has(key)) {
			return styled ? `${fmt(value)} ${c.dim}(${value})${c.reset}` : `${fmt(value)} (${value})`;
			}
			}
			return String(value);
			}

			function flattenStats(value, prefix = '', out = [], styled = true) {
			if (value && typeof value === 'object') {
			for (const [key, child] of Object.entries(value)) {
			flattenStats(child, prefix ? `${prefix}.${key}` : key, out, styled);
			}
			return out;
			}

			if (styled) {
			out.push(`${c.gray}${prefix}${c.reset}: ${c.bold}${formatStatValue(prefix, value, true)}${c.reset}`);
			} else {
			out.push(`${prefix}: ${formatStatValue(prefix, value, false)}`);
			}
			return out;
			}

			function collectMemorySnapshot() {
			const mem = Ant.stats();
			const gcProfile = Ant.raw && typeof Ant.raw.gcMarkProfile === 'function'
			? Ant.raw.gcMarkProfile()
			: null;

			return { mem, gcProfile };
			}

			function buildMemoryLinesFromSnapshot(snapshot, styled = true) {
			const { mem, gcProfile } = snapshot;
			const lines = styled
			? [`${c.cyan}Ant.stats()${c.reset}`, `${c.dim}Raw runtime stats dump${c.reset}`, '']
			: ['Ant.stats()', 'Raw runtime stats dump', ''];
			lines.push(...flattenStats(mem, '', [], styled));

			if (gcProfile) {
			lines.push('');
			lines.push(styled ? `${c.cyan}Ant.raw.gcMarkProfile()${c.reset}` : 'Ant.raw.gcMarkProfile()');
			lines.push(styled ? `${c.dim}Extra GC mark profiler stats${c.reset}` : 'Extra GC mark profiler stats');
			lines.push('');
			lines.push(...flattenStats(gcProfile, 'gcMarkProfile', [], styled));
			}

			return lines;
			}

			function rebuildMemoryDisplayCache() {
			if (!state.memoryCache) return;

			const cols = getCols();
			state.memoryCache.cols = cols;
			state.memoryCache.displayLines = state.memoryCache.styledLines.map(line => pad(line, cols));
			}

			function refreshMemoryCache() {
			const snapshot = collectMemorySnapshot();
			state.memoryCache = {
			snapshot,
			styledLines: buildMemoryLinesFromSnapshot(snapshot, true),
			plainLines: buildMemoryLinesFromSnapshot(snapshot, false),
			displayLines: [],
			cols: 0,
			updatedAt: Date.now(),
			};
			rebuildMemoryDisplayCache();
			}

			function ensureMemoryCache() {
			if (!state.memoryCache) {
			refreshMemoryCache();
			} else if (state.memoryCache.cols !== getCols()) {
			rebuildMemoryDisplayCache();
			}

			return state.memoryCache;
			}

			function hasGcMarkProfileControls() {
			return Ant.raw
			&& typeof Ant.raw.gcMarkProfile === 'function'
			&& typeof Ant.raw.gcMarkProfileEnable === 'function'
			&& typeof Ant.raw.gcMarkProfileReset === 'function';
			}

			function toggleGcMarkProfile() {
			if (!hasGcMarkProfileControls()) {
			setMemoryStatus(`${c.red}GC mark profiler unavailable${c.reset}`);
			return false;
			}

			const current = Ant.raw.gcMarkProfile();
			const enabled = Ant.raw.gcMarkProfileEnable(!current.enabled);
			refreshMemoryCache();
			setMemoryStatus(enabled
			? `${c.green}GC mark profiler enabled${c.reset}`
			: `${c.yellow}GC mark profiler disabled${c.reset}`);
			return true;
			}

			function resetGcMarkProfile() {
			if (!hasGcMarkProfileControls()) {
			setMemoryStatus(`${c.red}GC mark profiler unavailable${c.reset}`);
			return false;
			}

			Ant.raw.gcMarkProfileReset();
			refreshMemoryCache();
			setMemoryStatus(`${c.green}GC mark profiler reset${c.reset}`);
			return true;
			}

			function memoryStatusText() {
			if (!state.memoryStatus) return '';
			if (Date.now() - state.memoryStatusAt > 4000) {
			state.memoryStatus = '';
			return '';
			}
			return state.memoryStatus;
			}

			function setMemoryStatus(message) {
			state.memoryStatus = message;
			state.memoryStatusAt = Date.now();
			}

			function copyMemoryStats() {
			const text = ensureMemoryCache().plainLines.join('\n') + '\n';
			const commands = process.platform === 'win32'
			? [{ command: 'clip', args: [] }]
			: [
			{ command: 'pbcopy', args: [] },
			{ command: 'wl-copy', args: [] },
			{ command: 'xclip', args: ['-selection', 'clipboard'] },
			{ command: 'xsel', args: ['--clipboard', '--input'] }
			];

			for (const { command, args } of commands) {
			try {
			const result = spawnSync(command, args, { input: text });
			if (result.status === 0 \|\| result.exitCode === 0) {
			setMemoryStatus(`${c.green}Copied stats to clipboard with ${command}${c.reset}`);
			return true;
			}
			} catch {}
			}

			setMemoryStatus(`${c.red}Clipboard copy failed${c.reset}`);
			return false;
			}

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

			if (state.mode === 'browse') {
			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 footerLines = 2;
			const memoryCache = ensureMemoryCache();
			const memoryLines = memoryCache.displayLines;
			const viewHeight = Math.max(1, rows - footerLines);
			const maxOffset = Math.max(0, memoryLines.length - viewHeight);

			if (state.memoryOffset > maxOffset) {
			state.memoryOffset = maxOffset;
			}

			const end = Math.min(memoryLines.length, state.memoryOffset + viewHeight);
			lines.push(...memoryLines.slice(state.memoryOffset, end));

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

			lines.push(' '.repeat(cols));
			const status = memoryStatusText();
			lines.push(pad(
			`${c.dim}↑↓ scroll · PgUp/PgDn · g/G top/bottom · r refresh · e profiler · R reset profiler · c copy · m browse · q quit${c.reset} ${c.dim}[${state.memoryOffset + 1}-${end}/${memoryLines.length}]${c.reset} ${status}${status ? ' ' : ''}${c.cyan}${fps.current} fps${c.reset}`,
			cols
			));
			linesArePadded = true;
			}

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

			function render() {
			if (pendingRender) return;
			fps.update();
			const screen = buildScreen();
			const clear = state.fullClearNextRender ? term.clearScreen : '';
			state.fullClearNextRender = false;
			const ok = process.stdout.write(`${term.syncStart}${term.hideCursor}${term.home}${clear}${screen}${term.syncEnd}`);
			if (!ok) pendingRender = true;
			}

			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':
			if (state.mode === 'memory') {
			state.memoryOffset = Math.max(0, state.memoryOffset - 1);
			} else {
			state.index = Math.max(0, state.index - 1);
			}
			needsRender = true;
			break;
			case '\x1b[B':
			case 'j':
			if (state.mode === 'memory') {
			state.memoryOffset++;
			} else {
			state.index = Math.min(state.filtered.length - 1, state.index + 1);
			}
			needsRender = true;
			break;
			case '\x1b[5~':
			if (state.mode === 'memory') {
			state.memoryOffset = Math.max(0, state.memoryOffset - Math.max(1, getRows() - 4));
			} else {
			state.index = Math.max(0, state.index - 10);
			}
			needsRender = true;
			break;
			case '\x1b[6~':
			if (state.mode === 'memory') {
			state.memoryOffset += Math.max(1, getRows() - 4);
			} else {
			state.index = Math.min(state.filtered.length - 1, state.index + 10);
			}
			needsRender = true;
			break;
			case 'g':
			if (state.mode === 'memory') {
			state.memoryOffset = 0;
			} else {
			state.index = 0;
			}
			needsRender = true;
			break;
			case 'G':
			if (state.mode === 'memory') {
			state.memoryOffset = Number.MAX_SAFE_INTEGER;
			} else {
			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':
			if (state.mode === 'memory') {
			state.mode = 'browse';
			} else {
			state.mode = 'memory';
			state.fullClearNextRender = true;
			state.memoryOffset = 0;
			refreshMemoryCache();
			setMemoryStatus(`${c.green}Refreshed memory stats${c.reset}`);
			}
			needsRender = true;
			break;
			case 'r':
			if (state.mode === 'memory') {
			refreshMemoryCache();
			setMemoryStatus(`${c.green}Refreshed memory stats${c.reset}`);
			needsRender = true;
			}
			break;
			case 'e':
			if (state.mode === 'memory') {
			needsRender = toggleGcMarkProfile() \|\| needsRender;
			}
			break;
			case 'R':
			if (state.mode === 'memory') {
			needsRender = resetGcMarkProfile() \|\| needsRender;
			}
			break;
			case 'c':
			if (state.mode === 'memory') {
			copyMemoryStats();
			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 = '';
			let pendingRender = false;
			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.stdout.on('drain', () => {
			if (!pendingRender) return;
			pendingRender = false;
			render();
			});
			process.on('SIGINT', cleanup);
			process.on('SIGTERM', cleanup);

			render();

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