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[pull] main from firecrawl:main #384

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Merged
pull merged 1 commit into from
Jan 22, 2026
Merged

[pull] main from firecrawl:main #384

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22 changes: 7 additions & 15 deletions apps/api/src/services/ab-test-comparison.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,6 @@ import { Logger } from "winston";
import { parseMarkdown } from "../lib/html-to-markdown";

const AB_LOG_PREFIX = "[FE_AB_COMPARE]";
const MAX_CONTENT_SIZE = 1_000_000; // 1 MB
const VARIANCE_THRESHOLD = 0.05; // 5% allowed variance

export interface FireEngineResponse {
Expand All @@ -20,15 +19,16 @@ function calculateSimilarity(a: string, b: string): number {
if (a === b) return 1;
if (a.length === 0 || b.length === 0) return 0;

const maxLen = Math.max(a.length, b.length);
const minLen = Math.min(a.length, b.length);
const wordsA = new Set(a.toLowerCase().split(/\s+/).filter(Boolean));
const wordsB = new Set(b.toLowerCase().split(/\s+/).filter(Boolean));

let matches = 0;
for (let i = 0; i < minLen; i++) {
if (a[i] === b[i]) matches++;
let intersection = 0;
for (const w of wordsA) {
if (wordsB.has(w)) intersection++;
}

return matches / maxLen;
const union = wordsA.size + wordsB.size - intersection;
return intersection / union;
}

export function scheduleABComparison(
Expand Down Expand Up @@ -57,14 +57,6 @@ export function scheduleABComparison(
return;
}

// Skip comparison if content too large
if (
productionResponse.content.length > MAX_CONTENT_SIZE ||
mirrorResult.response.content.length > MAX_CONTENT_SIZE
) {
return;
}

// Convert HTML to markdown before comparing
const [prodMarkdown, mirrorMarkdown] = await Promise.all([
parseMarkdown(productionResponse.content, { logger: abLogger }),
Expand Down
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