Bisect improvements

README.md

@@ -35,6 +35,18 @@ $ yarn test
   ...
 ```
 
+Run or debug locally  
+```bash
+yarn build
+
+GITHUB_WORKSPACE=/absolute/path/to/TypeScript \
+GITHUB_TOKEN=$token \          # will comment without DRY!
+DRY=1 \                        # do not post results comment
+ISSUE=50635 \                  # optional
+BISECT="good 4.7.3 bad main" \ # optional
+node lib/_main.js
+```
+
 ## To publish
 
 Actions are run from GitHub repos so we will check-in the packed dist folder. 

action.yml

@@ -20,9 +20,13 @@ inputs:
     description: 'What tag should be applied to the markdown code block?'
     default: 'repro'
 
+  issue:
+    required: false
+    description: 'Limits analysis to a single issue'
+
   bisect:
     required: false
-    description: 'Request a git bisect against an issue that already has a repro. Value is the issue number.'
+    description: 'Runs a git bisect on an existing repro. Requires `issue` to be set. Value can be revision labels (e.g. `good v4.7.3 bad main`) or `true` to infer bisect range.'
 
 runs:
   using: 'node16'

dist/index.js

@@ -83,19 +83,21 @@ const getContext = () => {
     const workspace = process.env.GITHUB_WORKSPACE;
     const label = (0, core_1.getInput)('label') || 'Has Repro';
     const tag = (0, core_1.getInput)('code-tag') || 'repro';
-    const runIssue = (0, core_1.getInput)('issue') || process.env.ISSUE;
-    const bisectIssue = (0, core_1.getInput)('bisect') || process.env.BISECT_ISSUE;
+    const issue = (0, core_1.getInput)('issue') || process.env.ISSUE;
+    const bisect = (0, core_1.getInput)('bisect') || process.env.BISECT;
     const owner = repo.split('/')[0];
     const name = repo.split('/')[1];
+    const dryRun = !!process.env.DRY;
     const ctx = {
         token,
         owner,
         name,
         label,
         tag,
-        runIssue,
-        bisectIssue,
-        workspace
+        issue,
+        bisect,
+        workspace,
+        dryRun
     };
     return ctx;
 };
@@ -120,8 +122,8 @@ async function getIssue(context, issue) {
 exports.getIssue = getIssue;
 async function getIssues(context) {
     const octokit = (0, github_1.getOctokit)(context.token);
-    if (context.runIssue) {
-        return [await getIssue(context, parseInt(context.runIssue, 10))];
+    if (context.issue) {
+        return [await getIssue(context, parseInt(context.issue, 10))];
     }
     const req = issuesQuery(context.owner, context.name, context.label);
     const initialIssues = (await octokit.graphql(req.query, Object.assign({}, req.vars)));
@@ -265,7 +267,8 @@ async function gitBisectTypeScript(context, issue) {
     const requests = (0, getRequestsFromIssue_1.getRequestsFromIssue)(context)(issue);
     const request = requests[requests.length - 1];
     const resultComment = request && (0, getExistingComments_1.getResultCommentInfoForRequest)(issue.comments.nodes, request);
-    const bisectRevisions = getRevisionsFromComment(issue, request, context) ||
+    const bisectRevisions = getRevisionsFromContext(context, request) ||
+        getRevisionsFromComment(issue, request, context) ||
         (resultComment && getRevisionsFromPreviousRun(resultComment, context));
     if (!bisectRevisions)
         return;
@@ -317,37 +320,43 @@ function getRevisionsFromPreviousRun(resultComment, context) {
         const oldRef = `v${oldResult.label}`;
         const newRef = newResult.label === 'Nightly' ? resultComment.info.typescriptSha : `v${newResult.label}`;
         const oldMergeBase = (0, child_process_1.execSync)(`git merge-base ${oldRef} main`, { cwd: context.workspace, encoding: 'utf8' }).trim();
-        const newMergeBase = (0, child_process_1.execSync)(`git merge-base ${newRef} main`, { cwd: context.workspace, encoding: 'utf8' }).trim();
         return {
             oldRef: oldMergeBase,
-            newRef: newMergeBase,
+            newRef,
             oldLabel: oldResult.label,
             newLabel: newResult.label,
             oldResult
         };
     }
 }
-const bisectCommentRegExp = /^@typescript-bot bisect (?:this )?(?:good|old) ([^\s]+) (?:bad|new) ([^\s]+)/;
+const bisectCommentRegExp = /^(?:@typescript-bot bisect (?:this )?)?(?:good|old) ([^\s]+) (?:bad|new) ([^\s]+)/;
 function getRevisionsFromComment(issue, request, context) {
     for (let i = issue.comments.nodes.length - 1; i >= 0; i--) {
         const comment = issue.comments.nodes[i];
-        const match = comment.body.match(bisectCommentRegExp);
-        if (match) {
-            const [, oldLabel, newLabel] = match;
-            const oldRef = (0, child_process_1.execSync)(`git merge-base ${oldLabel} main`, { cwd: context.workspace, encoding: 'utf8' }).trim();
-            const newRef = (0, child_process_1.execSync)(`git merge-base ${newLabel} main`, { cwd: context.workspace, encoding: 'utf8' }).trim();
-            (0, child_process_1.execSync)(`git checkout ${oldRef}`, { cwd: context.workspace });
-            const oldResult = buildAndRun(request, context);
-            return {
-                oldRef,
-                newRef,
-                oldLabel,
-                newLabel,
-                oldResult
-            };
-        }
+        const revs = tryGetRevisionsFromText(comment.body, request, context);
+        if (revs)
+            return revs;
+    }
+}
+function tryGetRevisionsFromText(text, request, context) {
+    const match = text.match(bisectCommentRegExp);
+    if (match) {
+        const [, oldLabel, newLabel] = match;
+        const oldRef = (0, child_process_1.execSync)(`git merge-base ${oldLabel} main`, { cwd: context.workspace, encoding: 'utf8' }).trim();
+        (0, child_process_1.execSync)(`git checkout ${oldRef}`, { cwd: context.workspace });
+        const oldResult = buildAndRun(request, context);
+        return {
+            oldRef,
+            newRef: newLabel,
+            oldLabel,
+            newLabel,
+            oldResult
+        };
     }
 }
+function getRevisionsFromContext(context, request) {
+    return tryGetRevisionsFromText(context.bisect, request, context);
+}
 function buildAndRun(request, context) {
     try {
         // Try building without npm install for speed, it will work a fair amount of the time
@@ -474,12 +483,14 @@ Object.defineProperty(exports, "__esModule", ({ value: true }));
 exports.createCommentText = exports.updateIssue = exports.postBisectComment = exports.fixOrDeleteOldComments = void 0;
 const getExistingComments_1 = __nccwpck_require__(2408);
 const getTypeScriptNightlyVersion_1 = __nccwpck_require__(1371);
-async function fixOrDeleteOldComments(issue, api) {
+async function fixOrDeleteOldComments(issue, api, context) {
     const outdatedComments = (0, getExistingComments_1.getAllTypeScriptBotComments)(issue.comments.nodes)
         .filter(c => c.info.version !== 1)
         .map(c => c.comment);
-    for (const comment of outdatedComments) {
-        await api.deleteComment(comment.id);
+    if (!context.dryRun) {
+        for (const comment of outdatedComments) {
+            await api.deleteComment(comment.id);
+        }
     }
     if (outdatedComments.length) {
         return Object.assign(Object.assign({}, issue), { comments: { nodes: issue.comments.nodes.filter(c => !outdatedComments.includes(c)) } });
@@ -20052,11 +20063,14 @@ async function run() {
     const ctx = (0, getContext_1.getContext)();
     const api = (0, api_1.createAPI)(ctx);
     console.log(`Context: ${JSON.stringify(ctx, null, '  ')}`);
-    if (ctx.bisectIssue) {
-        let issue = await (0, getIssues_1.getIssue)(ctx, parseInt(ctx.bisectIssue, 10));
-        issue = await (0, updatesIssue_1.fixOrDeleteOldComments)(issue, api);
+    if (ctx.bisect) {
+        if (!ctx.issue) {
+            throw new Error('Must provide an issue number to bisect');
+        }
+        let issue = await (0, getIssues_1.getIssue)(ctx, parseInt(ctx.issue, 10));
+        issue = await (0, updatesIssue_1.fixOrDeleteOldComments)(issue, api, ctx);
         const result = await (0, gitBisectTypeScript_1.gitBisectTypeScript)(ctx, issue);
-        if (result) {
+        if (result && !ctx.dryRun) {
             await (0, updatesIssue_1.postBisectComment)(issue, result, api);
         }
         return;
@@ -20068,11 +20082,13 @@ async function run() {
         process.stdout.write('.');
         if (issues.indexOf(issue) % 10)
             console.log('');
-        issue = await (0, updatesIssue_1.fixOrDeleteOldComments)(issue, api);
+        issue = await (0, updatesIssue_1.fixOrDeleteOldComments)(issue, api, ctx);
         const requests = (0, getRequestsFromIssue_1.getRequestsFromIssue)(ctx)(issue);
         for (const request of requests) {
             const results = (0, runTwoslashRequests_1.runTwoslashRequests)(issue, request);
-            await (0, updatesIssue_1.updateIssue)(request, issue, results, api);
+            if (!ctx.dryRun) {
+                await (0, updatesIssue_1.updateIssue)(request, issue, results, api);
+            }
         }
     }
 }

src/__tests__/getRequestsFromIssue.test.ts

@@ -10,8 +10,9 @@ const testCtx: Context = {
   token: '123456',
   tag: 'repro',
   workspace: '',
-  bisectIssue: undefined,
-  runIssue: undefined,
+  bisect: undefined,
+  issue: undefined,
+  dryRun: false,
 }
 
 const oneCodeBlock = ` comment blah

src/_main.ts

@@ -12,12 +12,15 @@ async function run() {
   const api = createAPI(ctx)
   console.log(`Context: ${JSON.stringify(ctx, null, '  ')}`)
 
-  if (ctx.bisectIssue) {
-    let issue = await getIssue(ctx, parseInt(ctx.bisectIssue, 10))
-    issue = await fixOrDeleteOldComments(issue, api)
+  if (ctx.bisect) {
+    if (!ctx.issue) {
+      throw new Error('Must provide an issue number to bisect')
+    }
+    let issue = await getIssue(ctx, parseInt(ctx.issue, 10))
+    issue = await fixOrDeleteOldComments(issue, api, ctx)
 
     const result = await gitBisectTypeScript(ctx, issue)
-    if (result) {
+    if (result && !ctx.dryRun) {
       await postBisectComment(issue, result, api)
     }
     return
@@ -32,11 +35,13 @@ async function run() {
     process.stdout.write('.')
     if (issues.indexOf(issue) % 10) console.log('')
 
-    issue = await fixOrDeleteOldComments(issue, api)
+    issue = await fixOrDeleteOldComments(issue, api, ctx)
     const requests = getRequestsFromIssue(ctx)(issue)
     for (const request of requests) {
       const results = runTwoslashRequests(issue, request)
-      await updateIssue(request, issue, results, api)
+      if (!ctx.dryRun) {
+        await updateIssue(request, issue, results, api)
+      }
     }
   }
 }

src/getContext.ts

@@ -1,27 +1,39 @@
 import {getInput} from '@actions/core'
 
-export type Context = ReturnType<typeof getContext>
+export interface Context {
+  token: string
+  owner: string
+  name: string
+  label: string
+  tag: string
+  issue: string | undefined
+  bisect: string | undefined
+  workspace: string
+  dryRun: boolean
+}
 
 export const getContext = () => {
   const token = getInput('github-token') || process.env.GITHUB_TOKEN!
   const repo = getInput('repo') || process.env.GITHUB_REPOSITORY || 'microsoft/TypeScript'
   const workspace = process.env.GITHUB_WORKSPACE!
   const label = getInput('label') || 'Has Repro'
   const tag = getInput('code-tag') || 'repro'
-  const runIssue = getInput('issue') || process.env.ISSUE
-  const bisectIssue = getInput('bisect') || (process.env.BISECT_ISSUE as string | undefined)
+  const issue = getInput('issue') || process.env.ISSUE
+  const bisect = getInput('bisect') || (process.env.BISECT as string | undefined)
   const owner = repo.split('/')[0]
   const name = repo.split('/')[1]
+  const dryRun = !!process.env.DRY
 
-  const ctx = {
+  const ctx: Context = {
     token,
     owner,
     name,
     label,
     tag,
-    runIssue,
-    bisectIssue,
-    workspace
+    issue,
+    bisect,
+    workspace,
+    dryRun
   }
 
   return ctx

src/getIssues.ts

@@ -33,8 +33,8 @@ export async function getIssue(context: Context, issue: number): Promise<Issue>
 
 export async function getIssues(context: Context): Promise<Issue[]> {
   const octokit = getOctokit(context.token)
-  if (context.runIssue) {
-    return [await getIssue(context, parseInt(context.runIssue, 10))]
+  if (context.issue) {
+    return [await getIssue(context, parseInt(context.issue, 10))]
   }
 
   const req = issuesQuery(context.owner, context.name, context.label)

src/gitBisectTypeScript.ts

@@ -20,6 +20,7 @@ export async function gitBisectTypeScript(context: Context, issue: Issue): Promi
   const request = requests[requests.length - 1]
   const resultComment = request && getResultCommentInfoForRequest(issue.comments.nodes, request)
   const bisectRevisions =
+    getRevisionsFromContext(context, request) ||
     getRevisionsFromComment(issue, request, context) ||
     (resultComment && getRevisionsFromPreviousRun(resultComment, context))
   if (!bisectRevisions) return
@@ -85,43 +86,54 @@ function getRevisionsFromPreviousRun(
     const oldRef = `v${oldResult.label}`
     const newRef = newResult.label === 'Nightly' ? resultComment.info.typescriptSha : `v${newResult.label}`
     const oldMergeBase = execSync(`git merge-base ${oldRef} main`, {cwd: context.workspace, encoding: 'utf8'}).trim()
-    const newMergeBase = execSync(`git merge-base ${newRef} main`, {cwd: context.workspace, encoding: 'utf8'}).trim()
     return {
       oldRef: oldMergeBase,
-      newRef: newMergeBase,
+      newRef,
       oldLabel: oldResult.label,
       newLabel: newResult.label,
       oldResult
     }
   }
 }
 
-const bisectCommentRegExp = /^@typescript-bot bisect (?:this )?(?:good|old) ([^\s]+) (?:bad|new) ([^\s]+)/
+const bisectCommentRegExp = /^(?:@typescript-bot bisect (?:this )?)?(?:good|old) ([^\s]+) (?:bad|new) ([^\s]+)/
 function getRevisionsFromComment(
   issue: Issue,
   request: TwoslashRequest,
   context: Context
 ): BisectRevisions | undefined {
   for (let i = issue.comments.nodes.length - 1; i >= 0; i--) {
     const comment = issue.comments.nodes[i]
-    const match = comment.body.match(bisectCommentRegExp)
-    if (match) {
-      const [, oldLabel, newLabel] = match
-      const oldRef = execSync(`git merge-base ${oldLabel} main`, {cwd: context.workspace, encoding: 'utf8'}).trim()
-      const newRef = execSync(`git merge-base ${newLabel} main`, {cwd: context.workspace, encoding: 'utf8'}).trim()
-      execSync(`git checkout ${oldRef}`, {cwd: context.workspace})
-      const oldResult = buildAndRun(request, context)
-      return {
-        oldRef,
-        newRef,
-        oldLabel,
-        newLabel,
-        oldResult
-      }
+    const revs = tryGetRevisionsFromText(comment.body, request, context)
+    if (revs) return revs
+  }
+}
+
+function tryGetRevisionsFromText(
+  text: string,
+  request: TwoslashRequest,
+  context: Context
+): BisectRevisions | undefined {
+  const match = text.match(bisectCommentRegExp)
+  if (match) {
+    const [, oldLabel, newLabel] = match
+    const oldRef = execSync(`git merge-base ${oldLabel} main`, {cwd: context.workspace, encoding: 'utf8'}).trim()
+    execSync(`git checkout ${oldRef}`, {cwd: context.workspace})
+    const oldResult = buildAndRun(request, context)
+    return {
+      oldRef,
+      newRef: newLabel,
+      oldLabel,
+      newLabel,
+      oldResult
     }
   }
 }
 
+function getRevisionsFromContext(context: Context, request: TwoslashRequest): BisectRevisions | undefined {
+  return tryGetRevisionsFromText(context.bisect!, request, context)
+}
+
 function buildAndRun(request: TwoslashRequest, context: Context) {
   try {
     // Try building without npm install for speed, it will work a fair amount of the time