const crypto = require('crypto'); const fs = require('fs'); const path = require('path'); // Fallback to blow away old cache keys const HASH_VERSION = 1; // Base files to hash const filesToHash = [ path.resolve(__dirname, '../DEPS'), path.resolve(__dirname, '../yarn.lock') ]; const addAllFiles = (dir) => { for (const child of fs.readdirSync(dir).sort()) { const childPath = path.resolve(dir, child); if (fs.statSync(childPath).isDirectory()) { addAllFiles(childPath); } else { filesToHash.push(childPath); } } }; // Add all patch files to the hash addAllFiles(path.resolve(__dirname, '../patches')); // Create Hash const hasher = crypto.createHash('SHA256'); for (const file of filesToHash) { hasher.update(fs.readFileSync(file)); } // Add the GCLIENT_EXTRA_ARGS variable to the hash hasher.update(process.env.GCLIENT_EXTRA_ARGS || 'no_extra_args'); // Write the hash to disk fs.writeFileSync(path.resolve(__dirname, '../.depshash'), hasher.digest('hex'));