| 1 | 'use strict'; |
| 2 | |
| 3 | const fs = require('fs'); |
| 4 | const path = require('path'); |
| 5 | |
| 6 | const {execFileAsync, repoRoot, noopLogger} = require('./utils'); |
| 7 | |
| 8 | function readChangelogSnippet(preferredPackage) { |
| 9 | const cacheKey = |
| 10 | preferredPackage === 'eslint-plugin-react-hooks' |
| 11 | ? preferredPackage |
| 12 | : 'root'; |
| 13 | if (!readChangelogSnippet.cache) { |
| 14 | readChangelogSnippet.cache = new Map(); |
| 15 | } |
| 16 | const cache = readChangelogSnippet.cache; |
| 17 | if (cache.has(cacheKey)) { |
| 18 | return cache.get(cacheKey); |
| 19 | } |
| 20 | |
| 21 | const targetPath = |
| 22 | preferredPackage === 'eslint-plugin-react-hooks' |
| 23 | ? path.join( |
| 24 | repoRoot, |
| 25 | 'packages', |
| 26 | 'eslint-plugin-react-hooks', |
| 27 | 'CHANGELOG.md' |
| 28 | ) |
| 29 | : path.join(repoRoot, 'CHANGELOG.md'); |
| 30 | |
| 31 | let content = ''; |
| 32 | try { |
| 33 | content = fs.readFileSync(targetPath, 'utf8'); |
| 34 | } catch { |
| 35 | content = ''; |
| 36 | } |
| 37 | |
| 38 | const snippet = content.slice(0, 4000); |
| 39 | cache.set(cacheKey, snippet); |
| 40 | return snippet; |
| 41 | } |
| 42 | |
| 43 | function sanitizeSummary(text) { |
| 44 | if (!text) { |
| 45 | return ''; |
| 46 | } |
| 47 | |
| 48 | const trimmed = text.trim(); |
| 49 | const withoutBullet = trimmed.replace(/^([-*]\s+|\d+\s*[\.)]\s+)/, ''); |
| 50 | |
| 51 | return withoutBullet.replace(/\s+/g, ' ').trim(); |
| 52 | } |
| 53 | |
| 54 | async function summarizePackages({ |
| 55 | summarizer, |
| 56 | packageSpecs, |
| 57 | packageTargets, |
| 58 | commitsByPackage, |
| 59 | log, |
| 60 | }) { |
| 61 | const summariesByPackage = new Map(); |
| 62 | if (!summarizer) { |
| 63 | packageSpecs.forEach(spec => { |
| 64 | const commits = commitsByPackage.get(spec.name) || []; |
| 65 | const summaryMap = new Map(); |
| 66 | for (let i = 0; i < commits.length; i++) { |
| 67 | const commit = commits[i]; |
| 68 | summaryMap.set(commit.sha, commit.subject); |
| 69 | } |
| 70 | summariesByPackage.set(spec.name, summaryMap); |
| 71 | }); |
| 72 | return summariesByPackage; |
| 73 | } |
| 74 | |
| 75 | const tasks = packageSpecs.map(spec => { |
| 76 | const commits = commitsByPackage.get(spec.name) || []; |
| 77 | return summarizePackageCommits({ |
| 78 | summarizer, |
| 79 | spec, |
| 80 | commits, |
| 81 | packageTargets, |
| 82 | allPackageSpecs: packageSpecs, |
| 83 | log, |
| 84 | }); |
| 85 | }); |
| 86 | |
| 87 | const results = await Promise.all(tasks); |
| 88 | results.forEach(entry => { |
| 89 | summariesByPackage.set(entry.packageName, entry.summaries); |
| 90 | }); |
| 91 | return summariesByPackage; |
| 92 | } |
| 93 | |
| 94 | async function summarizePackageCommits({ |
| 95 | summarizer, |
| 96 | spec, |
| 97 | commits, |
| 98 | packageTargets, |
| 99 | allPackageSpecs, |
| 100 | log, |
| 101 | }) { |
| 102 | const summaries = new Map(); |
| 103 | if (commits.length === 0) { |
| 104 | return {packageName: spec.name, summaries}; |
| 105 | } |
| 106 | |
| 107 | const rootStyle = readChangelogSnippet('root'); |
| 108 | const hooksStyle = readChangelogSnippet('eslint-plugin-react-hooks'); |
| 109 | const targetList = allPackageSpecs.map( |
| 110 | targetSpec => |
| 111 | `${targetSpec.name}@${targetSpec.displayVersion || targetSpec.version}` |
| 112 | ); |
| 113 | const payload = commits.map(commit => { |
| 114 | const packages = Array.from(commit.packages || []).sort(); |
| 115 | const usesHooksStyle = (commit.packages || new Set()).has( |
| 116 | 'eslint-plugin-react-hooks' |
| 117 | ); |
| 118 | const packagesWithVersions = packages.map(pkgName => { |
| 119 | const targetSpec = packageTargets.get(pkgName); |
| 120 | if (!targetSpec) { |
| 121 | return pkgName; |
| 122 | } |
| 123 | return `${pkgName}@${targetSpec.displayVersion || targetSpec.version}`; |
| 124 | }); |
| 125 | return { |
| 126 | sha: commit.sha, |
| 127 | packages, |
| 128 | packagesWithVersions, |
| 129 | style: usesHooksStyle ? 'eslint-plugin-react-hooks' : 'root', |
| 130 | subject: commit.subject, |
| 131 | body: commit.body || '', |
| 132 | }; |
| 133 | }); |
| 134 | |
| 135 | const promptParts = [ |
| 136 | `You are preparing changelog summaries for ${spec.name} ${ |
| 137 | spec.displayVersion || spec.version |
| 138 | }.`, |
| 139 | 'The broader release includes:', |
| 140 | ...targetList.map(line => `- ${line}`), |
| 141 | '', |
| 142 | 'For each commit payload, write a single concise sentence without a leading bullet.', |
| 143 | 'Match the tone and formatting of the provided style samples. Do not mention commit hashes.', |
| 144 | 'Return a JSON array where each element has the shape `{ "sha": "<sha>", "summary": "<text>" }`.', |
| 145 | 'The JSON must contain one entry per commit in the same order they are provided.', |
| 146 | 'Use `"root"` style unless the payload specifies `"eslint-plugin-react-hooks"`, in which case use that style sample.', |
| 147 | '', |
| 148 | '--- STYLE: root ---', |
| 149 | rootStyle, |
| 150 | '--- END STYLE ---', |
| 151 | '', |
| 152 | '--- STYLE: eslint-plugin-react-hooks ---', |
| 153 | hooksStyle, |
| 154 | '--- END STYLE ---', |
| 155 | '', |
| 156 | `Commits affecting ${spec.name}:`, |
| 157 | ]; |
| 158 | |
| 159 | payload.forEach((item, index) => { |
| 160 | promptParts.push( |
| 161 | `Commit ${index + 1}:`, |
| 162 | `sha: ${item.sha}`, |
| 163 | `style: ${item.style}`, |
| 164 | `packages: ${item.packagesWithVersions.join(', ') || 'none'}`, |
| 165 | `subject: ${item.subject}`, |
| 166 | 'body:', |
| 167 | item.body || '(empty)', |
| 168 | '' |
| 169 | ); |
| 170 | }); |
| 171 | promptParts.push('Return ONLY the JSON array.', ''); |
| 172 | |
| 173 | const prompt = promptParts.join('\n'); |
| 174 | log( |
| 175 | `Invoking ${summarizer} for ${payload.length} commit summaries targeting ${spec.name}.` |
| 176 | ); |
| 177 | log(`Summarizer prompt length: ${prompt.length} characters.`); |
| 178 | |
| 179 | try { |
| 180 | const raw = await runSummarizer(summarizer, prompt); |
| 181 | log(`Summarizer output length: ${raw.length}`); |
| 182 | const parsed = parseSummariesResponse(raw); |
| 183 | if (!parsed) { |
| 184 | throw new Error('Unable to parse summarizer output.'); |
| 185 | } |
| 186 | parsed.forEach(entry => { |
| 187 | const summary = sanitizeSummary(entry.summary || ''); |
| 188 | if (summary) { |
| 189 | summaries.set(entry.sha, summary); |
| 190 | } |
| 191 | }); |
| 192 | } catch (error) { |
| 193 | if (log !== noopLogger) { |
| 194 | log( |
| 195 | `Warning: failed to summarize commits for ${spec.name} with ${summarizer}. Falling back to subjects. ${error.message}` |
| 196 | ); |
| 197 | if (error && error.stack) { |
| 198 | log(error.stack); |
| 199 | } |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | for (let i = 0; i < commits.length; i++) { |
| 204 | const commit = commits[i]; |
| 205 | if (!summaries.has(commit.sha)) { |
| 206 | summaries.set(commit.sha, commit.subject); |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | log(`Summaries available for ${summaries.size} commit(s) for ${spec.name}.`); |
| 211 | |
| 212 | return {packageName: spec.name, summaries}; |
| 213 | } |
| 214 | |
| 215 | async function runSummarizer(command, prompt) { |
| 216 | const options = {cwd: repoRoot, maxBuffer: 5 * 1024 * 1024}; |
| 217 | |
| 218 | if (command === 'codex') { |
| 219 | const {stdout} = await execFileAsync( |
| 220 | 'codex', |
| 221 | ['exec', '--json', prompt], |
| 222 | options |
| 223 | ); |
| 224 | return parseCodexSummary(stdout); |
| 225 | } |
| 226 | |
| 227 | if (command === 'claude') { |
| 228 | const {stdout} = await execFileAsync('claude', ['-p', prompt], options); |
| 229 | return stripClaudeBanner(stdout); |
| 230 | } |
| 231 | |
| 232 | throw new Error(`Unsupported summarizer command: ${command}`); |
| 233 | } |
| 234 | |
| 235 | function parseCodexSummary(output) { |
| 236 | let last = ''; |
| 237 | const lines = output.split('\n'); |
| 238 | for (let i = 0; i < lines.length; i++) { |
| 239 | const trimmed = lines[i].trim(); |
| 240 | if (!trimmed) { |
| 241 | continue; |
| 242 | } |
| 243 | try { |
| 244 | const event = JSON.parse(trimmed); |
| 245 | if ( |
| 246 | event.type === 'item.completed' && |
| 247 | event.item?.type === 'agent_message' |
| 248 | ) { |
| 249 | last = event.item.text || ''; |
| 250 | } |
| 251 | } catch { |
| 252 | last = trimmed; |
| 253 | } |
| 254 | } |
| 255 | return last || output; |
| 256 | } |
| 257 | |
| 258 | function stripClaudeBanner(text) { |
| 259 | return text |
| 260 | .split('\n') |
| 261 | .filter( |
| 262 | line => |
| 263 | line.trim() !== |
| 264 | 'Claude Code at Meta (https://fburl.com/claude.code.users)' |
| 265 | ) |
| 266 | .join('\n') |
| 267 | .trim(); |
| 268 | } |
| 269 | |
| 270 | function parseSummariesResponse(output) { |
| 271 | const trimmed = output.trim(); |
| 272 | const candidates = trimmed |
| 273 | .split('\n') |
| 274 | .map(line => line.trim()) |
| 275 | .filter(Boolean); |
| 276 | |
| 277 | for (let i = candidates.length - 1; i >= 0; i--) { |
| 278 | const candidate = candidates[i]; |
| 279 | if (!candidate) { |
| 280 | continue; |
| 281 | } |
| 282 | try { |
| 283 | const parsed = JSON.parse(candidate); |
| 284 | if (Array.isArray(parsed)) { |
| 285 | return parsed; |
| 286 | } |
| 287 | } catch { |
| 288 | // Try the next candidate. |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | try { |
| 293 | const parsed = JSON.parse(trimmed); |
| 294 | if (Array.isArray(parsed)) { |
| 295 | return parsed; |
| 296 | } |
| 297 | } catch { |
| 298 | // Fall through. |
| 299 | } |
| 300 | |
| 301 | return null; |
| 302 | } |
| 303 | |
| 304 | module.exports = { |
| 305 | summarizePackages, |
| 306 | }; |