direkturcrypto
e9e5d66ac9
The CLOB client errorHandling function does JSON.stringify on err.response.config which includes httpsAgent (HttpsProxyAgent with circular references). Inject a safe serializer that strips agent properties before serializing. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
113 lines
4.0 KiB
JavaScript
113 lines
4.0 KiB
JavaScript
/**
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* patch-clob-client.cjs
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*
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* Patches @polymarket/clob-client to inject proxy support.
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* Runs automatically via `npm install` (postinstall hook).
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*
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* What it does:
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* - Adds HttpsProxyAgent import to http-helpers/index.js
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* - Registers an axios interceptor that injects the proxy agent
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* into every request to polymarket.com
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* - Reads PROXY_URL from process.env at runtime
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*/
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const fs = require('fs');
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const path = require('path');
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const TARGET = path.join(
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__dirname,
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'..',
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'node_modules',
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'@polymarket',
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'clob-client',
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'dist',
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'http-helpers',
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'index.js',
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);
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if (!fs.existsSync(TARGET)) {
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console.log('[patch] @polymarket/clob-client not found — skipping');
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process.exit(0);
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}
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let code = fs.readFileSync(TARGET, 'utf8');
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// Check if already patched
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if (code.includes('getProxyAgent')) {
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console.log('[patch] @polymarket/clob-client already patched — skipping');
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process.exit(0);
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}
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// ── Inject proxy interceptor after axios import ─────────────────────────────
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// Instead of patching individual request configs (which causes circular
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// reference errors when the config gets serialized), we register an axios
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// request interceptor that injects httpsAgent on the fly.
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const PATCH_CODE = `
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// ── Proxy support (auto-patched by scripts/patch-clob-client.cjs) ──────────
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const https_proxy_agent_1 = require("https-proxy-agent");
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let _cachedProxyAgent = null;
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const getProxyAgent = () => {
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if (!process.env.PROXY_URL) return undefined;
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if (!_cachedProxyAgent) {
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_cachedProxyAgent = new https_proxy_agent_1.HttpsProxyAgent(process.env.PROXY_URL);
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}
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return _cachedProxyAgent;
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};
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// Intercept all axios requests — inject proxy agent for polymarket.com
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axios_1.default.interceptors.request.use(function(cfg) {
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if (cfg.url && cfg.url.includes('polymarket.com')) {
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var agent = getProxyAgent();
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if (agent) {
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cfg.httpsAgent = agent;
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cfg.httpAgent = agent;
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cfg.proxy = false;
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}
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}
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return cfg;
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});
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// Safe JSON.stringify that strips circular agent refs
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const _safeStringify = (obj) => JSON.stringify(obj, (key, val) => {
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if (key === 'httpsAgent' || key === 'httpAgent' || key === 'agent') return undefined;
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return val;
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});
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// ── End proxy patch ────────────────────────────────────────────────────────
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`;
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// Find axios import to inject after — try multiple patterns
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const axiosPatterns = [
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// tslib __importDefault pattern (compiled TS)
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/tslib_1\.__importDefault\s*\(\s*require\s*\(\s*["']axios["']\s*\)\s*\)\s*;/,
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// Standard require
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/require\s*\(\s*["']axios["']\s*\)\s*;/,
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];
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let injected = false;
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for (const pattern of axiosPatterns) {
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const match = code.match(pattern);
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if (match) {
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code = code.replace(match[0], match[0] + PATCH_CODE);
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console.log(`[patch] Injected proxy interceptor after axios import`);
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injected = true;
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break;
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}
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}
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if (!injected) {
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console.error('[patch] Could not find axios import — skipping');
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console.error('[patch] File content preview (first 1000 chars):');
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console.error(code.substring(0, 1000));
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process.exit(0);
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}
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// ── Patch errorHandling to avoid circular JSON serialization ────────────────
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// The CLOB client does JSON.stringify(err.response.config) which includes
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// httpsAgent with circular references. Replace with safe serializer.
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const jsonCount = (code.match(/JSON\.stringify\(/g) || []).length;
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code = code.replace(/JSON\.stringify\(/g, '_safeStringify(');
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const patchedCount = (code.match(/_safeStringify\(/g) || []).length;
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console.log(`[patch] Replaced ${jsonCount} JSON.stringify calls with safe serializer`);
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fs.writeFileSync(TARGET, code, 'utf8');
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console.log('[patch] @polymarket/clob-client patched with proxy support ✅');
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