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Merged
anirudha merged 1 commit into from
Apr 3, 2026
Merged

feat(cli): improve ASCII animations #155

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96 changes: 73 additions & 23 deletions aws/cli-installer/src/ui.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -454,60 +454,104 @@ export function printTable(headers, rows) {

// ── ASCII Art Animations ─────────────────────────────────────────────────────

const SPINNER_WORDS = [
'tracenoodling', 'spanwrangling', 'metricsniffing', 'logchurning',
'dashgawking', 'alertyawning', 'flamegraphing', 'latencynibbling',
'uptimewishing', 'pagernuzzling', 'histogrambling', 'cardinoodling',
'sampletasting', 'retentionmunching', 'slogandering', 'tracewidgling',
'percentiling', 'scrapetinkling', 'exemplargling', 'aggregoosing',
'downtimesnoozing', 'instrumentoodling', 'correlooking', 'anomasniffing',
'telemetrilling', 'baselinuzzling', 'threshwondering', 'observanoodling',
'spanstitching', 'dashboardling',
];

const GRADIENT_COLORS = [
'#B07FFF', '#A88BFF', '#9E9AFF', '#8FB0FF', '#6EC8F5',
'#6BCBA0', '#6BCB77', '#A0D86B', '#FFD93D', '#FFB347',
'#FF8C6B', '#FF6B6B', '#FF6B9D', '#D07FFF', '#B07FFF',
];

function createWordRotator() {
const shuffled = [...SPINNER_WORDS].sort(() => Math.random() - 0.5);
let idx = 0;
let lastSwap = Date.now();
let offset = 0;
let lastShift = Date.now();
return () => {
const now = Date.now();
if (now - lastSwap >= 10_000) {
idx = (idx + 1) % shuffled.length;
lastSwap = now;
}
if (now - lastShift >= 250) {
offset = (offset + 1) % GRADIENT_COLORS.length;
lastShift = now;
}
const word = shuffled[idx];
const len = GRADIENT_COLORS.length;
return [...word].map((ch, i) =>
chalk.hex(GRADIENT_COLORS[((offset - i) % len + len) % len])(ch)
).join('');
};
}

// Owl searching through data — for OpenSearch domain provisioning
const OPENSEARCH_FRAMES = [
[
'',
" ,___,",
' {o,o} ◇ searching...',
' |)__) ◇ ◇',
' /)__)',
' -"-"- ◇ ◇ ◇',
' /| |\\ ',
' ˢᵉᵃʳᶜʰⁱⁿᵍ ᵗʰᵉ ⁱⁿᵈᵉˣ ',
null,
'',
],
[
'',
" ,___,",
' {O,o} ◈ indexing...',
' |)__) ◈ ◈',
' /)__)',
' -"-"- ◈ ◈ ◈',
' /| |\\ ',
' ˢᶜᵃⁿⁿⁱⁿᵍ ᶜˡᵘˢᵗᵉʳˢ ',
null,
'',
],
[
'',
" ,___,",
' {o,O} ◆ mapping...',
' |)__) ◆ ◆',
' /)__)',
' -"-"- ◆ ◆ ◆',
' /| |\\ ',
' ᵐᵃᵖᵖⁱⁿᵍ ˢʰᵃʳᵈˢ ',
null,
'',
],
[
'',
" ,___,",
' {O,O} ★ found it!',
' |)__) ★ ★',
' /)__)',
' -"-"- ★ ★ ★',
' /| |\\ ',
' ᵃˡᵐᵒˢᵗ ʳᵉᵃᵈʸ... ',
null,
'',
],
];

// Fish swimming back and forth through the pipeline
const FISH_RIGHT = '><(((º>';
const FISH_LEFT = '<º)))><';
const PIPE_WIDTH = 36;
const PIPE_CAPTIONS = [
'ᵈᵃᵗᵃ ᶠˡᵒʷⁱⁿᵍ ᵗʰʳᵒᵘᵍʰ',
'ᵇᵘⁱˡᵈⁱⁿᵍ ᵗʰᵉ ˢᵗʳᵉᵃᵐ',
'ᶜᵒⁿⁿᵉᶜᵗⁱⁿᵍ ⁿᵒᵈᵉˢ',
'ᵃˡᵐᵒˢᵗ ᵗʰᵉʳᵉ...',
];

function buildPipelineFrame(pos, goingRight) {
function buildPipelineFrame(pos, goingRight, caption) {
const fish = goingRight ? FISH_RIGHT : FISH_LEFT;
const lane = ' '.repeat(PIPE_WIDTH);
const row = lane.slice(0, pos) + fish + lane.slice(pos + fish.length);
const pipe = '═'.repeat(PIPE_WIDTH);
const caption = PIPE_CAPTIONS[Math.floor(pos / (PIPE_WIDTH / PIPE_CAPTIONS.length)) % PIPE_CAPTIONS.length];
return [
'',
` ${pipe}`,
` ${row}`,
` ${pipe}`,
` ${caption}`,
'',
];
}

Expand All @@ -532,9 +576,15 @@ export function createAsciiAnimation(type) {
// OpenSearch state
let osFrame = 0;

const getWord = createWordRotator();

function getFrame() {
if (isOpenSearch) return OPENSEARCH_FRAMES[(osFrame++) % OPENSEARCH_FRAMES.length];
const frame = buildPipelineFrame(fishPos, goingRight);
const word = getWord();
if (isOpenSearch) {
return OPENSEARCH_FRAMES[(osFrame++) % OPENSEARCH_FRAMES.length]
.map((l) => l === null ? ` ${word}` : l);
}
const frame = buildPipelineFrame(fishPos, goingRight, word);
if (goingRight) { fishPos++; if (fishPos >= maxPos) goingRight = false; }
else { fishPos--; if (fishPos <= 0) goingRight = true; }
return frame;
Expand Down Expand Up @@ -570,7 +620,7 @@ export function createAsciiAnimation(type) {
process.on('SIGINT', onSigint);
lineCount = 0;
render();
timer = setInterval(render, isOpenSearch ? 600 : 120);
timer = setInterval(render, isOpenSearch ? 500 : 250);
},
/** Update the status text shown below the art */
setStatus(fn) { statusFn = fn; },
Expand Down
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