@ooples/token-optimizer-mcp/dist/modules/SummarizationModule.js

Intelligent context window optimization for Claude Code - store content externally via caching and compression, freeing up your context window for what matters

export class SummarizationModule {
    model;
    tokenCounter;
    metrics;
    constructor(model, tokenCounter, metrics) {
        this.model = model;
        this.tokenCounter = tokenCounter;
        this.metrics = metrics;
    }
    async summarize(text, options = {}) {
        const startTime = Date.now();
        const originalTokenResult = await Promise.resolve(this.tokenCounter.count(text));
        const originalTokens = originalTokenResult.tokens;
        // Build summarization prompt
        const prompt = this.buildSummarizationPrompt(text, options);
        // Generate summary using foundation model
        const summary = await this.model.generate(prompt, {
            maxTokens: options.maxOutputTokens || Math.floor(originalTokens * 0.3),
            temperature: 0.3, // Lower temperature for factual summarization
        });
        const summaryTokenResult = await Promise.resolve(this.tokenCounter.count(summary));
        const summaryTokens = summaryTokenResult.tokens;
        const compressionRatio = summaryTokens / originalTokens;
        // Track metrics
        if (this.metrics) {
            this.metrics.recordSummarization({
                originalTokens,
                summaryTokens,
                compressionRatio,
                latency: Date.now() - startTime,
            });
        }
        return {
            summary,
            originalTokens,
            summaryTokens,
            compressionRatio,
        };
    }
    buildSummarizationPrompt(text, options) {
        const style = options.style || 'concise';
        const targetLength = options.maxOutputTokens
            ? `approximately ${options.maxOutputTokens} tokens`
            : `about ${Math.floor(text.length * 0.3)} characters`;
        let prompt = `Please provide a ${style} summary of the following text in ${targetLength}:\n\n`;
        if (options.preserveCodeBlocks) {
            prompt +=
                'IMPORTANT: Preserve all code blocks and technical details exactly as written.\n\n';
        }
        prompt += `Text to summarize:\n${text}\n\nSummary:`;
        return prompt;
    }
}
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