const CSI_FINAL=/[\u0040-\u007e]/u;function nextKey(t){let n=t[0];if(n===void 0)return{consumed:0,incomplete:!0};if(n===`\x1B`){if(t.length===1)return{consumed:0,incomplete:!0};let n=t[1];if(n===`O`)return t.length<3?{consumed:0,incomplete:!0}:{key:parseKey(Buffer.from(t.slice(0,3))),consumed:3};if(n===`[`){for(let n=2;n<t.length;n+=1)if(CSI_FINAL.test(t[n]))return{key:parseKey(Buffer.from(t.slice(0,n+1))),consumed:n+1};return{consumed:0,incomplete:!0}}return{key:{type:`escape`},consumed:1}}if(n<` `||n===``)return{key:parseKey(Buffer.from(n)),consumed:1};let r=1;for(;r<t.length;){let e=t[r];if(e===`\x1B`||e<` `||e===``)break;r+=1}return{key:parseKey(Buffer.from(t.slice(0,r))),consumed:r}}function parseKey(e){let t=e.toString(`utf8`);switch(t){case``:return{type:`ctrl-a`};case``:return{type:`ctrl-e`};case``:return{type:`ctrl-d`};case`\v`:return{type:`ctrl-k`};case`\f`:return{type:`ctrl-l`};case``:return{type:`ctrl-r`};case``:return{type:`ctrl-u`};case``:return{type:`ctrl-w`};case``:return{type:`ctrl-c`};case`\r`:case`
`:return{type:`enter`};case``:case`\b`:return{type:`backspace`};case`\x1B[A`:case`\x1BOA`:return{type:`up`};case`\x1B[B`:case`\x1BOB`:return{type:`down`};case`\x1B[C`:case`\x1BOC`:return{type:`right`};case`\x1B[D`:case`\x1BOD`:return{type:`left`};case`\x1B[H`:case`\x1BOH`:case`\x1B[1~`:return{type:`home`};case`\x1B[F`:case`\x1BOF`:case`\x1B[4~`:return{type:`end`};case`\x1B[3~`:return{type:`delete`};case`	`:return{type:`tab`};case`\x1B`:return{type:`escape`};default:{let e=``;for(let n of t)n>=` `&&n!==``&&(e+=n);return e.length>0?{type:`character`,value:e}:{type:`ignore`}}}}async function*takeUntil(e,t){let n=e[Symbol.asyncIterator](),r=t.then(()=>({done:!0,value:void 0}));for(;;){let e=await Promise.race([n.next(),r]);if(e.done)break;yield e.value}}function formatTokenCount(e,t){if(e==null)return;let n=`${e.toLocaleString()} ${e===1?`token`:`tokens`}`,r=formatContextPercentage(e,t);return r==null?n:`${n} ${r}`}function formatContextPercentage(e,t){if(!(t==null||t<=0||!Number.isFinite(t)))return`${Math.round(e/t*100).toLocaleString()}%`}function formatAssistantResponseStats(e,t){if(t===`tokensPerSecond`)return formatTokensPerSecond(e.tokensPerSecond);if(e.outputTokens!=null)return`${e.outputTokens.toLocaleString()} output tokens`}function formatTokensPerSecond(e){if(e!=null)return`${formatNumber(e)} tok/s`}function formatNumber(e){return Number.isInteger(e)?e.toLocaleString():e.toLocaleString(void 0,{maximumFractionDigits:1})}export{formatAssistantResponseStats,formatTokenCount,nextKey,parseKey,takeUntil};