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pairs = [\"GBPJPY\",\"EURJPY\",\"USDJPY\"];\nconst cutoffs = [\n \"2015-01-13 01:00:00\",\"2015-01-22 01:00:00\",\"2015-02-10 01:00:00\",\"2015-02-26 01:00:00\",\n \"2015-03-10 01:00:00\",\"2015-03-26 01:00:00\",\"2015-04-14 02:00:00\",\"2015-04-23 02:00:00\",\n \"2015-05-12 02:00:00\",\"2015-05-21 02:00:00\",\"2015-06-16 02:00:00\",\"2015-06-25 02:00:00\"\n];\n\ntype Bar = {date:string, high:number, low:number, close:number, e25:number, e75:number, e200:number};\nconst pip = (x:number) => x * 100;\nconst mean = (a:number[]) => a.length ? a.reduce((s,x)=>s+x,0)/a.length : NaN;\n\nasync function processPair(pair:string) {\n const url = `https://raw.githubusercontent.com/ejtraderLabs/historical-data/main/${pair}/${pair}m15.csv`;\n const resp = await fetch(url);\n if (!resp.ok || !resp.body) throw new Error(`${pair} fetch ${resp.status}`);\n const decoder = new TextDecoder();\n let pending = \"\";\n let headerSeen = false;\n let ci = 0;\n let prevClose:number|undefined;\n let e25:number|undefined, e75:number|undefined, e200:number|undefined;\n const a25 = 2/26, a75 = 2/76, a200 = 2/201;\n const trq:number[] = [];\n const buf:Bar[] = [];\n let currentDay = \"\";\n let dayHigh = -Infinity, dayLow = Infinity;\n let prevDayHigh:number|undefined, prevDayLow:number|undefined, prevDayDate:string|undefined;\n const out:any[] = [];\n\n function snapshot(cutoff:string) {\n if (!buf.length || e25===undefined || e75===undefined || e200===undefined) return;\n const last = buf[buf.length-1];\n const atrPrice = mean(trq);\n const getCloseAgo = (n:number) => buf.length>n ? buf[buf.length-1-n].close : NaN;\n const range = (n:number) => {\n const x = buf.slice(-Math.min(n,buf.length));\n const hi = Math.max(...x.map(b=>b.high)); const lo = Math.min(...x.map(b=>b.low));\n return {hi,lo,rangeP:pip(hi-lo),pos:(last.close-lo)/Math.max(1e-12,hi-lo)};\n };\n const r8=range(32), r24=range(96);\n const e25ago = buf.length>24 ? buf[buf.length-1-24].e25 : NaN;\n const e75ago = buf.length>24 ? buf[buf.length-1-24].e75 : NaN;\n const e200ago = buf.length>24 ? buf[buf.length-1-24].e200 : NaN;\n const alignment = (e25!>e75! && e75!>e200!) ? \"UP_ORDER\" : ((e25! level===undefined || !isFinite(atrPrice) ? null : Math.abs(last.close-level)/atrPrice;\n out.push({pair, cutoff, maxUsedDate:last.date, close:+last.close.toFixed(3),\n ema25:+e25!.toFixed(4), ema75:+e75!.toFixed(4), ema200:+e200!.toFixed(4), alignment,\n atr14_pips:+pip(atrPrice).toFixed(2),\n ret1h_pips:+pip(last.close-getCloseAgo(4)).toFixed(1), ret3h_pips:+pip(last.close-getCloseAgo(12)).toFixed(1),\n ret6h_pips:+pip(last.close-getCloseAgo(24)).toFixed(1), ret12h_pips:+pip(last.close-getCloseAgo(48)).toFixed(1),\n ret24h_pips:+pip(last.close-getCloseAgo(96)).toFixed(1),\n ema25_slope6h_pips:+pip(e25!-e25ago).toFixed(2), ema75_slope6h_pips:+pip(e75!-e75ago).toFixed(2), ema200_slope6h_pips:+pip(e200!-e200ago).toFixed(2),\n range8h_pips:+r8.rangeP.toFixed(1), pos8h:+r8.pos.toFixed(3), range24h_pips:+r24.rangeP.toFixed(1), pos24h:+r24.pos.toFixed(3),\n prevDayDate:prevDayDate??null, prevDayHigh:prevDayHigh===undefined?null:+prevDayHigh.toFixed(3), prevDayLow:prevDayLow===undefined?null:+prevDayLow.toFixed(3),\n distEMA25_ATR:+d(e25!)!.toFixed(3), distEMA75_ATR:+d(e75!)!.toFixed(3), distEMA200_ATR:+d(e200!)!.toFixed(3),\n distPrevHigh_ATR:d(prevDayHigh)===null?null:+d(prevDayHigh)!.toFixed(3), distPrevLow_ATR:d(prevDayLow)===null?null:+d(prevDayLow)!.toFixed(3),\n safe:last.date < cutoff\n });\n }\n\n function processLine(line:string) {\n if (!line.trim()) return;\n if (!headerSeen) { headerSeen=true; return; }\n const p=line.split(\",\"); if (p.length<5) return;\n const date=p[0].trim();\n while (ci=cutoffs[ci]) { snapshot(cutoffs[ci]); ci++; }\n if (ci>=cutoffs.length && date>cutoffs[cutoffs.length-1]) return;\n const div=1000;\n const high=Number(p[2])/div, low=Number(p[3])/div, close=Number(p[4])/div;\n if (![high,low,close].every(Number.isFinite)) return;\n const day=date.slice(0,10);\n if (!currentDay) currentDay=day;\n if (day!==currentDay) {\n prevDayDate=currentDay; prevDayHigh=dayHigh; prevDayLow=dayLow;\n currentDay=day; dayHigh=-Infinity; dayLow=Infinity;\n }\n dayHigh=Math.max(dayHigh,high); dayLow=Math.min(dayLow,low);\n e25 = e25===undefined ? close : e25 + a25*(close-e25);\n e75 = e75===undefined ? close : e75 + a75*(close-e75);\n e200 = e200===undefined ? close : e200 + a200*(close-e200);\n if (prevClose!==undefined) {\n const tr=Math.max(high-low, Math.abs(high-prevClose), Math.abs(low-prevClose));\n trq.push(tr); if (trq.length>14) trq.shift();\n }\n prevClose=close;\n buf.push({date,high,low,close,e25,e75,e200}); if (buf.length>500) buf.shift();\n }\n\n const reader=resp.body.getReader();\n while (true) {\n const {value,done}=await reader.read(); if (done) break;\n pending += decoder.decode(value,{stream:true});\n let i; while ((i=pending.indexOf(\"\\n\"))>=0) { const line=pending.slice(0,i).replace(/\\r$/,''); pending=pending.slice(i+1); processLine(line); }\n if (ci>=cutoffs.length) { try { await reader.cancel(); } catch {} break; }\n }\n if (pending.trim() && 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Diff · v4