eve
Version:
Filesystem-first framework for durable backend AI agents that run anywhere.
4 lines • 3.73 kB
JavaScript
const CSI_FINAL=/[\u0040-\u007e]/u,PASTE_START=`\x1B[200~`,PASTE_END=`\x1B[201~`;function sanitizePastedText(e){let t=``;for(let n of e.replace(/\r\n?/gu,`
`)){if(n===`
`||n===` `){t+=n;continue}let e=n.codePointAt(0);e!==void 0&&(e<32||e===127||e>=128&&e<=159||(t+=n))}return t}function isIncompletePaste(e){return e.startsWith(PASTE_START)&&!e.includes(PASTE_END,6)}function stripPasteStart(e){return e.startsWith(PASTE_START)?e.slice(6):e}function stripPromptControlCharacters(e){let t=``;for(let n of e)n>=` `&&n!==``&&(t+=n);return t}function nextKey(r){let i=r[0];if(i===void 0)return{consumed:0,incomplete:!0};if(i===`\x1B`){if(r.length===1)return{consumed:0,incomplete:!0};let i=r[1];if(i===`O`)return r.length<3?{consumed:0,incomplete:!0}:{key:parseKey(Buffer.from(r.slice(0,3))),consumed:3};if(i===`[`){if(r.startsWith(PASTE_START)){let e=r.indexOf(PASTE_END,6);return e===-1?{consumed:0,incomplete:!0}:{key:{type:`text`,value:sanitizePastedText(r.slice(6,e)),framing:`bracketed-paste`},consumed:e+6}}for(let t=2;t<r.length;t+=1)if(CSI_FINAL.test(r[t]))return{key:parseKey(Buffer.from(r.slice(0,t+1))),consumed:t+1};return{consumed:0,incomplete:!0}}return{key:{type:`escape`},consumed:1}}if(i<` `||i===``)return{key:parseKey(Buffer.from(i)),consumed:1};let a=1;for(;a<r.length;){let e=r[a];if(e===`\x1B`||e<` `||e===``)break;a+=1}return{key:parseKey(Buffer.from(r.slice(0,a))),consumed:a}}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`\x1B[27;2;13~`:case`\x1B[13;2u`:return{type:`newline`};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=stripPromptControlCharacters(t);return e.length>0?{type:`text`,value:e,framing:`unframed`}:{type:`ignore`}}}}async function*takeUntil(e,t){let n=e[Symbol.asyncIterator](),r=t.then(()=>({done:!0,value:void 0}));try{for(;;){let e=n.next();e.catch(()=>{});let t=await Promise.race([e,r]);if(t.done)break;yield t.value}}finally{n.return?.()?.catch(()=>{})}}function formatCompactTokenCount(e){if(e<1e3)return`${e}`;let t=e<1e6?e/1e3:e/1e6,n=e<1e6?`K`:`M`;return`${t.toFixed(1).replace(/\.0$/,``)}${n}`}function formatTokenFlow(e,t){let n=formatCompactTokenCount(e.inputTokens),r=formatCompactTokenCount(e.outputTokens),i=`${t.arrowUp} ${n} ${t.arrowDown} ${r}`,a=formatContextPercentage(e.inputTokens,e.contextSize);return a==null?i:`${i} ${a}`}function formatContextPercentage(e,t){if(!(t==null||t<=0||!Number.isFinite(t)))return`${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,formatCompactTokenCount,formatTokenFlow,isIncompletePaste,nextKey,parseKey,sanitizePastedText,stripPasteStart,stripPromptControlCharacters,takeUntil};