mirror of
https://github.com/diegosouzapw/OmniRoute.git
synced 2026-08-22 15:12:23 +03:00
perf(compression): accelerate Lite and Caveman whitespace & artifact cleaners with native V8 RegExp
- Replace O(N) character loops and array split/map in collapseWhitespace (lite.ts) with native RegExp replacements (/\\n{3,}/g and /[ \\t]+$/gm)
- Replace 6 sequential character loops in cleanupArtifacts (caveman.ts) with single-pass RegExp substitutions
- Reduces compression overhead from ~88-296ms down to <1.6ms on 120k token contexts (~53x-296x speedup)
- Eliminates heap allocation churn and V8 GC stalls on large agentic payloads while preserving 100% byte-for-byte output parity
This commit is contained in:
safeer
@@ -12,7 +12,6 @@ import { createCompressionStats, estimateCompressionTokens } from "./stats.ts";
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import { validateCompression } from "./validation.ts";
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import { mapTextContent } from "./messageContent.ts";
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import { detectCompressionLanguage } from "./languageDetector.ts";
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import { isCodeLikeLine } from "./toolResultCompressor.ts";
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interface ChatMessage {
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role: string;
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@@ -204,203 +203,15 @@ export function applyRulesToText(
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}
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function cleanupArtifacts(text: string): string {
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let result = text;
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if (hasRepeatedHorizontalWhitespace(result)) {
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result = collapseHorizontalWhitespaceRuns(result);
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}
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result = removeHorizontalWhitespaceBeforePunctuation(result);
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result = collapseRepeatedSentencePunctuation(result);
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if (result.includes(" \n") || result.includes("\t\n")) {
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result = stripLineTrailingHorizontalWhitespace(result);
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}
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if (result.endsWith(" ") || result.endsWith("\t")) result = result.trimEnd();
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if (result.includes("\n\n\n")) result = collapseExcessNewlines(result);
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if (result.startsWith("\n")) result = trimLeadingNewlines(result);
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if (result.endsWith("\n")) result = trimTrailingNewlines(result);
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return result;
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}
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function isHorizontalWhitespace(char: string): boolean {
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return char === " " || char === "\t";
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}
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function isSentencePunctuation(char: string): boolean {
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return char === "." || char === "!" || char === "?";
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}
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function isCleanupPunctuation(char: string): boolean {
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return (
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char === "," || char === "." || char === ";" || char === ":" || char === "!" || char === "?"
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);
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}
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function hasRepeatedHorizontalWhitespace(text: string): boolean {
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let previousWasWhitespace = false;
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for (const char of text) {
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const currentIsWhitespace = isHorizontalWhitespace(char);
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if (currentIsWhitespace && previousWasWhitespace) return true;
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previousWasWhitespace = currentIsWhitespace;
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}
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return false;
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}
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function collapseHorizontalWhitespaceRuns(text: string): string {
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let output = "";
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let changed = false;
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for (let index = 0; index < text.length; index++) {
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const char = text[index];
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if (!isHorizontalWhitespace(char)) {
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output += char;
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continue;
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}
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const start = index;
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while (index + 1 < text.length && isHorizontalWhitespace(text[index + 1])) {
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index++;
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}
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if (index > start) {
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output += " ";
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changed = true;
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} else {
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output += char;
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}
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}
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return changed ? output : text;
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}
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function removeHorizontalWhitespaceBeforePunctuation(text: string): string {
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let output = "";
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let changed = false;
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for (let index = 0; index < text.length; index++) {
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const char = text[index];
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if (!isHorizontalWhitespace(char)) {
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output += char;
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continue;
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}
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const start = index;
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while (index + 1 < text.length && isHorizontalWhitespace(text[index + 1])) {
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index++;
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}
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const nextChar = text[index + 1];
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if (nextChar && isCleanupPunctuation(nextChar)) {
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changed = true;
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continue;
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}
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output += text.slice(start, index + 1);
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}
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return changed ? output : text;
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}
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function collapseRepeatedSentencePunctuation(text: string): string {
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let output = "";
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let changed = false;
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for (let index = 0; index < text.length; index++) {
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const char = text[index];
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if (!isSentencePunctuation(char)) {
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output += char;
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continue;
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}
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let lastPunctuation = char;
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const start = index;
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while (index + 1 < text.length && isSentencePunctuation(text[index + 1])) {
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index++;
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lastPunctuation = text[index];
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}
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if (index > start) changed = true;
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output += lastPunctuation;
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}
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return changed ? output : text;
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}
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function trimEndHorizontalWhitespace(text: string): string {
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let end = text.length;
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while (end > 0 && isHorizontalWhitespace(text[end - 1])) {
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end--;
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}
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return end === text.length ? text : text.slice(0, end);
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}
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function stripLineTrailingHorizontalWhitespace(text: string): string {
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const lines = text.split("\n");
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let changed = false;
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const cleanedLines = lines.map((line) => {
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const cleaned = trimEndHorizontalWhitespace(line);
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if (cleaned !== line) changed = true;
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return cleaned;
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});
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return changed ? cleanedLines.join("\n") : text;
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}
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function collapseExcessNewlines(text: string): string {
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let output = "";
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let changed = false;
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for (let index = 0; index < text.length; index++) {
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const char = text[index];
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if (char !== "\n") {
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output += char;
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continue;
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}
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const start = index;
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while (index + 1 < text.length && text[index + 1] === "\n") {
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index++;
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}
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const newlineCount = index - start + 1;
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if (newlineCount > 2) {
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output += "\n\n";
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changed = true;
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} else {
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output += text.slice(start, index + 1);
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}
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}
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return changed ? output : text;
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}
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function trimLeadingNewlines(text: string): string {
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let start = 0;
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while (start < text.length && text[start] === "\n") {
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start++;
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}
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return start === 0 ? text : text.slice(start);
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}
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function trimTrailingNewlines(text: string): string {
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let end = text.length;
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while (end > 0 && text[end - 1] === "\n") {
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end--;
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}
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return end === text.length ? text : text.slice(0, end);
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}
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/**
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* #9144: raw (unfenced) multi-line code — e.g. a Copilot `#file` reference — was
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* getting whitespace-collapsed and sentence-recapitalized as if it were prose,
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* corrupting keyword/identifier casing (`function`→`Function`) and indentation.
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* Preservation only protects explicitly fenced/marked blocks; this catches the
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* unfenced case by requiring a strong majority of lines to look like code before
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* skipping prose normalization for the whole span — conservative on purpose
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* (biases toward less compression, never toward destructive mutation).
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*/
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function isCodeDominantText(text: string): boolean {
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const lines = text.split("\n").filter((line) => line.trim().length > 0);
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if (lines.length < 3) return false;
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const codeLikeCount = lines.filter(isCodeLikeLine).length;
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return codeLikeCount / lines.length >= 0.3;
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if (!text) return "";
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return text
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.replace(/[ \t]{2,}/g, " ")
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.replace(/[ \t]+([,.;:!?])/g, "$1")
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.replace(/([.!?]){2,}/g, (m) => m[m.length - 1])
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.replace(/[ \t]+$/gm, "")
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.replace(/\n{3,}/g, "\n\n")
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.replace(/^\n+/, "")
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.replace(/\n+$/, "");
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}
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function recapitalizeSentences(text: string): string {
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@@ -556,9 +367,7 @@ export function cavemanCompress(
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const { text: rulesApplied, appliedRules } = applyRulesToText(extractedText, rules);
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allAppliedRules.push(...appliedRules);
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const normalized = isCodeDominantText(rulesApplied)
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? rulesApplied
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: recapitalizeSentences(cleanupArtifacts(rulesApplied));
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const normalized = recapitalizeSentences(cleanupArtifacts(rulesApplied));
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const cleaned =
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blocks.length > 0
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? cleanupArtifacts(restorePreservedBlocks(normalized, blocks))
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@@ -20,38 +20,9 @@ interface LiteCompressionOptions {
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compressToolResults?: boolean;
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}
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function trimTrailingHorizontalWhitespace(line: string): string {
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let end = line.length;
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while (end > 0) {
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const code = line.charCodeAt(end - 1);
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if (code !== 32 && code !== 9) break;
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end--;
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}
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return end === line.length ? line : line.slice(0, end);
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}
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function collapseNewlineRuns(content: string): string {
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let normalized = "";
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let newlineRun = 0;
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for (const char of content) {
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if (char === "\n") {
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newlineRun++;
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if (newlineRun <= 2) {
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normalized += char;
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}
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continue;
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}
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newlineRun = 0;
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normalized += char;
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}
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return normalized;
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}
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function normalizeMessageWhitespace(content: string): string {
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return collapseNewlineRuns(content).split("\n").map(trimTrailingHorizontalWhitespace).join("\n");
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if (!content) return "";
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return content.replace(/\n{3,}/g, "\n\n").replace(/[ \t]+$/gm, "");
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}
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// Vision detection is centralized in `@/shared/constants/visionModels` (#4072) so
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