// The Typewriter — a scroll-driven typewriter that types out the six primitives // onto a long strip of paper. A carriage moves across, keys strike, red ink // emphasis, the occasional backspace + correction tape. // // Scroll progress 0..1 drives a virtual "character cursor" across a script. // The script contains all 6 primitives, interleaved with small tics of // personality: a typo that gets backspaced, a keyword typed in red, a tab. const { useEffect: useEffT, useRef: useRefT, useState: useStateT, useMemo: useMemoT } = React; // ── The script the typewriter types ── // Tokens: plain string, {r: "…"} red, {b: N} backspace N chars, {tab: true}, // {nl: true} newline, {strike: "typo"} then backspaced (generates chars + backspaces) const PRIMS_T = [ { num: "01", name: "MEMORY", tag: "a shared semantic substrate", detail: "— recall that spans agents, sessions, and teams." }, { num: "02", name: "FLEET", tag: "many agents, one intent", detail: "— orchestrate hundreds in parallel, deterministically." }, { num: "03", name: "TOOL", tag: "any API, typed end-to-end", detail: "— 212 registered, 0 schema drift." }, { num: "04", name: "TRACE", tag: "every decision, replayable", detail: "— cryptographically signed, forever." }, { num: "05", name: "STREAM", tag: "real-time throughput", detail: "— 38ms median, 99th under 120." }, { num: "06", name: "POLICY", tag: "guardrails, signed and audited", detail: "— SOC2 / HIPAA / EU AI Act out of the box." }, ]; // Build a flat stream of atomic ops. Each op advances the cursor by 1. // Ops: // { t: 'ch', c: 'A' } -- strike a character // { t: 'ch', c: 'X', red: true } -- strike in red // { t: 'bs' } -- backspace one char // { t: 'nl' } -- newline // { t: 'tab' } -- tab (advances cursor by fixed px) // { t: 'pause' } -- silent pause function buildOps() { const ops = []; const chStr = (s, red = false) => { for (const c of s) ops.push({ t: 'ch', c, red }); }; const bs = (n = 1) => { for (let i = 0; i < n; i++) ops.push({ t: 'bs' }); }; const pause = (n = 1) => { for (let i = 0; i < n; i++) ops.push({ t: 'pause' }); }; // Heading chStr("THE JAS MANIFEST"); ops.push({ t: 'nl' }); chStr("six primitives, one machine."); ops.push({ t: 'nl' }); ops.push({ t: 'nl' }); // Each primitive PRIMS_T.forEach((p, i) => { // "01. " chStr(`${p.num} `); // Name (bold emphasis -> red) chStr(p.name, true); pause(2); // Tag chStr(` — ${p.tag}`); ops.push({ t: 'nl' }); // Typo + correction on the second one for personality if (i === 1) { chStr(" "); chStr("— orchestarte"); pause(2); bs(4); chStr("rate hundreds in parallel, deterministically."); } else { chStr(" "); chStr(p.detail.replace(/^—\s*/, "— ")); } ops.push({ t: 'nl' }); ops.push({ t: 'nl' }); }); // Footer chStr("— signed, "); chStr("JAS CO.", true); chStr(", MMXXVI"); return ops; } function Typewriter() { const ref = useRefT(null); const [progress, setProgress] = useStateT(0); const [muted, setMuted] = useStateT(true); // sound off by default const audioCtxRef = useRefT(null); const lastSoundOpRef = useRefT(-1); const ops = useMemoT(() => buildOps(), []); const TOTAL = ops.length; const cursor = Math.floor(progress * TOTAL); // Scroll progress useEffT(() => { const onScroll = () => { const el = ref.current; if (!el) return; const rect = el.getBoundingClientRect(); const total = el.offsetHeight - window.innerHeight; const scrolled = -rect.top; setProgress(Math.max(0, Math.min(1, scrolled / total))); }; onScroll(); window.addEventListener("scroll", onScroll, { passive: true }); window.addEventListener("resize", onScroll); return () => { window.removeEventListener("scroll", onScroll); window.removeEventListener("resize", onScroll); }; }, []); // Replay ops up to cursor to compute "current rendered state" (lines of text) // Each line is an array of {c, red}. Backspaces pop; newlines start new line. const { lines, caretX, caretLine, activeOp } = useMemoT(() => { const lines = [[]]; let caret = 0; for (let i = 0; i < cursor; i++) { const op = ops[i]; if (!op) continue; if (op.t === 'ch') { lines[lines.length - 1].push({ c: op.c, red: op.red }); } else if (op.t === 'bs') { const cur = lines[lines.length - 1]; if (cur.length > 0) cur.pop(); else if (lines.length > 1) { lines.pop(); } } else if (op.t === 'nl') { lines.push([]); } else if (op.t === 'tab') { lines[lines.length - 1].push({ c: ' ', red: false }); lines[lines.length - 1].push({ c: ' ', red: false }); lines[lines.length - 1].push({ c: ' ', red: false }); lines[lines.length - 1].push({ c: ' ', red: false }); } } const lastLine = lines[lines.length - 1] || []; return { lines, caretX: lastLine.length, caretLine: lines.length - 1, activeOp: ops[cursor], }; }, [ops, cursor]); // Sound: click on each new 'ch' op useEffT(() => { if (muted) return; if (cursor <= lastSoundOpRef.current) return; const newOps = ops.slice(lastSoundOpRef.current + 1, cursor + 1); lastSoundOpRef.current = cursor; const ac = audioCtxRef.current || (audioCtxRef.current = new (window.AudioContext || window.webkitAudioContext)()); newOps.forEach((op, i) => { if (op && (op.t === 'ch' || op.t === 'bs')) { setTimeout(() => clack(ac, op.t === 'bs' ? 'thock' : 'click'), i * 18); } }); }, [cursor, muted, ops]); const TOTAL_VH = 220; // 2.2 screens tall — enough room to type at scroll pace // Carriage X in ribbon-space. Each char = CHAR_W. Current caret pos on line. const CHAR_W = 14; const LINE_H = 30; // Compute "strike" intensity for keystroke animation const strike = activeOp && (activeOp.t === 'ch' || activeOp.t === 'bs') ? 1 : 0; // Is the current op a backspace → show correction tape const correcting = activeOp && activeOp.t === 'bs'; return (
{/* Sticky stage */}
{/* Head */}
§ III  ·  DICTATION
KEYSTROKES {String(cursor).padStart(4, "0")} / {String(TOTAL).padStart(4, "0")}
{/* Headline — fades */}

Six primitives,
typed onto one ribbon.

↓ KEEP SCROLLING · DICTATION BEGINS

{/* Typewriter desk stage */}
{/* Long paper ribbon — scrolls left as caret advances so caret stays center */}
{/* Perforated edge top */}
{/* Perforated edge bottom */}
{/* Ribbon header stamp */}
JAS · FORM 06 · RIBBON
{/* The TEXT — rendered line by line */}
{lines.map((line, li) => (
{line.map((ch, ci) => ( ))} {/* Caret */} {li === caretLine && ( )} {/* Correction tape: white-out over the just-deleted char */} {li === caretLine && correcting && ( )}
))}
{/* TYPEWRITER TYPEBAR / carriage overlay — hovers over the paper */}
{/* The MACHINE BASE — below the ribbon */}
{/* Bottom status bar */}
{correcting ? "◉ CORRECTING" : strike ? "◉ STRIKE" : "○ IDLE"} RIBBON · BLACK · RED ROW {String(caretLine + 1).padStart(2, "0")} · COL {String(caretX + 1).padStart(2, "0")}
); } // Per-character: when it was most recently typed it pops in function TypedChar({ char, red, isLatest }) { return ( {char === ' ' ? '\u00A0' : char} ); } // The type head / carriage that visually hovers over the typing position function Carriage({ caretLine, caretX, lineH, charW, strike, correcting }) { const x = 36 + caretX * (charW * 0.56); const y = 36 + caretLine * lineH; return (
{/* Typebar: a metal arm that strikes down */} {/* Arm */} {/* Pivot dot */} {/* Type slug — the little hammer head */} {/* Strike flash */} {strike > 0 && ( )}
); } // The typewriter chassis beneath the paper — keyboard, ribbon spools, etc. function Machine({ strike }) { return (
{/* Ribbon drum area */}
{/* Two spools */} {/* Black + red ribbon strand between spools */}
{/* Nameplate */}
J A S   ·   M O D E L   0 6
{/* Keyboard */}
{["QWERTYUIOP", "ASDFGHJKL", "ZXCVBNM"].map((row, ri) => (
{row.split("").map(k => ( 0 && Math.random() < 0.03}/> ))}
))} {/* Spacebar */}
); } function Spool({ style }) { return (
); } function Key({ label, pressed }) { return ( {label} ); } // ─── Sound ─── function clack(ac, kind) { const t = ac.currentTime; const g = ac.createGain(); g.gain.setValueAtTime(0, t); g.connect(ac.destination); // Noise burst + sharp tonal tick const osc = ac.createOscillator(); osc.type = 'triangle'; osc.frequency.setValueAtTime(kind === 'thock' ? 260 : 820, t); osc.frequency.exponentialRampToValueAtTime(kind === 'thock' ? 140 : 420, t + 0.04); osc.connect(g); g.gain.linearRampToValueAtTime(kind === 'thock' ? 0.08 : 0.14, t + 0.002); g.gain.exponentialRampToValueAtTime(0.001, t + 0.06); osc.start(t); osc.stop(t + 0.07); } window.Typewriter = Typewriter; // Pop-in animation for the newest character if (typeof document !== 'undefined' && !document.getElementById('typewriter-keyframes')) { const s = document.createElement('style'); s.id = 'typewriter-keyframes'; s.textContent = `@keyframes popIn { 0%{transform:translateY(-3px);opacity:0.3} 60%{opacity:1} 100%{transform:translateY(0)} }`; document.head.appendChild(s); }