pricehistory
Version:
Transforms raw OHLCV series data into enriched candles with technical indicators, pattern recognition, and trend analysis.
62 lines • 2.53 kB
JavaScript
;
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})();
Object.defineProperty(exports, "__esModule", { value: true });
const utilN = __importStar(require("@nameer/utils"));
const keys_js_1 = require("./keys.js");
function setCandleTrend(opt, candle, ctx) {
if (opt.trend !== true)
return;
for (const key in candle) {
const value = candle[key];
if (value === undefined || typeof value !== "number")
continue;
for (const trendKey of keys_js_1.trendKeys) {
if (!key.startsWith(trendKey))
continue;
const prev = ctx.trend[key];
const symbol = utilN.math.change.symbol(prev?.[0], value);
const direction = symbol?.[0] ?? 0;
const startAt = direction !== prev?.[1] ? candle.index : prev[2];
const length = direction !== prev?.[1] ? 1 : prev[3] + 1;
candle[`${key}Trend`] = symbol;
candle[`${key}TrendStartAt`] = startAt;
candle[`${key}TrendLength`] = length;
ctx.trend[key] = [value, direction, startAt, length];
break;
}
}
}
exports.default = setCandleTrend;
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