refactor: centralize constants, add error classes, and DRY test utilities
- Create src/errors.js with custom error classes (RateLimitError, AuthError, ApiError, etc.) - Create src/utils/helpers.js with shared utilities (formatDuration, sleep) - Create tests/helpers/http-client.cjs with shared test utilities (~250 lines deduped) - Centralize OAuth config and other constants in src/constants.js - Add JSDoc types to all major exported functions - Refactor all test files to use shared http-client utilities - Update CLAUDE.md with new architecture documentation 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Badri Narayanan S
@@ -7,150 +7,9 @@
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* - signature_delta events are present
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* - Thinking blocks accumulate correctly across deltas
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*/
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const http = require('http');
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const { streamRequest, analyzeContent, analyzeEvents, commonTools } = require('./helpers/http-client.cjs');
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const BASE_URL = 'localhost';
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const PORT = 8080;
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function streamRequest(body) {
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return new Promise((resolve, reject) => {
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const data = JSON.stringify(body);
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const req = http.request({
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host: BASE_URL,
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port: PORT,
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path: '/v1/messages',
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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'x-api-key': 'test',
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'anthropic-version': '2023-06-01',
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'anthropic-beta': 'interleaved-thinking-2025-05-14',
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'Content-Length': Buffer.byteLength(data)
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}
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}, res => {
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const events = [];
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let fullData = '';
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res.on('data', chunk => {
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fullData += chunk.toString();
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});
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res.on('end', () => {
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// Parse SSE events
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const parts = fullData.split('\n\n').filter(e => e.trim());
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for (const part of parts) {
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const lines = part.split('\n');
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const eventLine = lines.find(l => l.startsWith('event:'));
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const dataLine = lines.find(l => l.startsWith('data:'));
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if (eventLine && dataLine) {
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try {
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const eventType = eventLine.replace('event:', '').trim();
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const eventData = JSON.parse(dataLine.replace('data:', '').trim());
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events.push({ type: eventType, data: eventData });
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} catch (e) { }
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}
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}
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// Build content from events
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const content = [];
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let currentBlock = null;
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for (const event of events) {
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if (event.type === 'content_block_start') {
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currentBlock = { ...event.data.content_block };
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if (currentBlock.type === 'thinking') {
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currentBlock.thinking = '';
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currentBlock.signature = '';
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}
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if (currentBlock.type === 'text') currentBlock.text = '';
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} else if (event.type === 'content_block_delta') {
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const delta = event.data.delta;
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if (delta.type === 'thinking_delta' && currentBlock) {
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currentBlock.thinking += delta.thinking || '';
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}
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if (delta.type === 'signature_delta' && currentBlock) {
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currentBlock.signature += delta.signature || '';
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}
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if (delta.type === 'text_delta' && currentBlock) {
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currentBlock.text += delta.text || '';
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}
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if (delta.type === 'input_json_delta' && currentBlock) {
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currentBlock.partial_json = (currentBlock.partial_json || '') + delta.partial_json;
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}
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} else if (event.type === 'content_block_stop') {
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if (currentBlock?.type === 'tool_use' && currentBlock.partial_json) {
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try { currentBlock.input = JSON.parse(currentBlock.partial_json); } catch (e) { }
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delete currentBlock.partial_json;
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}
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if (currentBlock) content.push(currentBlock);
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currentBlock = null;
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}
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}
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// Check for errors
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const errorEvent = events.find(e => e.type === 'error');
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if (errorEvent) {
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resolve({
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content,
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events,
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error: errorEvent.data.error,
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statusCode: res.statusCode,
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raw: fullData
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});
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} else {
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resolve({ content, events, statusCode: res.statusCode, raw: fullData });
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}
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});
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});
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req.on('error', reject);
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req.write(data);
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req.end();
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});
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}
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const tools = [{
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name: 'execute_command',
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description: 'Execute a shell command',
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input_schema: {
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type: 'object',
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properties: {
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command: { type: 'string', description: 'Command to execute' },
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cwd: { type: 'string', description: 'Working directory' }
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},
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required: ['command']
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}
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}];
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function analyzeContent(content) {
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const thinking = content.filter(b => b.type === 'thinking');
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const toolUse = content.filter(b => b.type === 'tool_use');
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const text = content.filter(b => b.type === 'text');
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return {
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thinking,
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toolUse,
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text,
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hasThinking: thinking.length > 0,
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hasToolUse: toolUse.length > 0,
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hasText: text.length > 0,
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thinkingHasSignature: thinking.some(t => t.signature && t.signature.length >= 50)
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};
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}
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function analyzeEvents(events) {
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return {
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messageStart: events.filter(e => e.type === 'message_start').length,
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blockStart: events.filter(e => e.type === 'content_block_start').length,
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blockDelta: events.filter(e => e.type === 'content_block_delta').length,
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blockStop: events.filter(e => e.type === 'content_block_stop').length,
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messageDelta: events.filter(e => e.type === 'message_delta').length,
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messageStop: events.filter(e => e.type === 'message_stop').length,
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thinkingDeltas: events.filter(e => e.data?.delta?.type === 'thinking_delta').length,
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signatureDeltas: events.filter(e => e.data?.delta?.type === 'signature_delta').length,
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textDeltas: events.filter(e => e.data?.delta?.type === 'text_delta').length,
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inputJsonDeltas: events.filter(e => e.data?.delta?.type === 'input_json_delta').length
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};
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}
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const tools = [commonTools.executeCommand];
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async function runTests() {
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console.log('='.repeat(60));
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