Checks the issue body before editing the message

src/runTwoslashRuns.ts

@@ -21,7 +21,7 @@ export type TwoslashResults = {
   label: string // e.g. 3.9.5
   description: string // e.g. Issue body by orta
   state: RunState
-  commentID?: string
+  commentID?: string | undefined
 }
 
 export function runTwoslashRuns(issue: Issue, runs: TwoslashRun): TwoslashResults[] {
@@ -68,7 +68,7 @@ export const runTwoSlash = (label: string) => (
   try {
     const opts = {noErrorValidation: true, noStaticSemanticInfo: true}
     result = twoslasher(run.block.content, run.block.lang, {defaultOptions: opts, tsModule})
-  } catch (error) {
+  } catch (error: any) {
     return {
       assertions: [],
       fails: [],

src/updatesIssue.ts

@@ -42,7 +42,7 @@ async function updateMainComment(newRuns: TwoslashResults[], api: API, issue: Is
 const intro = (runLength: number) => {
   const repros = runLength === 1 ? 'repro' : `${runLength} repros`
   const docsLink = 'https://github.com/microsoft/TypeScript-Twoslash-Repro-Action/tree/master/docs/user-facing.md'
-  return `:wave: Hi, I'm the [Repro bot](${docsLink}). I can help narrow down and track compiler bugs across releases! This comment reflects the current state of the ${repros} in this issue running against the nightly TypeScript. If something changes, I will post a new comment.<hr />`
+  return `:wave: Hi, I'm the [Repro bot](${docsLink}). I can help narrow down and track compiler bugs across releases! This comment reflects the current state of the ${repros} in this issue running against the nightly TypeScript.<hr />`
 }
 
 /** Above the fold */

src/utils/api.ts

@@ -3,6 +3,13 @@ import {Context} from '../getContext'
 
 const addComment = `mutation($input: AddCommentInput!) { addComment(input: $input) { clientMutationId } }`
 const editComment = `mutation($input: UpdateIssueCommentInput!) { updateIssueComment(input: $input) { clientMutationId } }`
+const getComment = `query GetComment ($commentID: ID!) {
+  node(id: $commentID) {
+    ... on Comment {
+      body
+    }
+  }
+}`
 
 export type API = ReturnType<typeof createAPI>
 
@@ -14,7 +21,13 @@ export const createAPI = (ctx: Context) => {
       // https://regex101.com/r/ZORaaK/1
       const sanitizedBody = body.replace(/home\/runner\/work\/TypeScript-Twoslash-Repro-Action\/TypeScript-Twoslash-Repro-Action\/dist/g, "[root]")
       if (commentID) {
-        await octokit.graphql(editComment, {input: {id: commentID, body: sanitizedBody}})
+        const commentReq = await octokit.graphql<{ node: { body: string }}>(getComment, { commentID })
+        const commentBody = commentReq.node.body
+        // TODO: Remove
+        console.log(commentBody)
+        if (commentBody !== sanitizedBody) {
+          await octokit.graphql(editComment, {input: {id: commentID, body: sanitizedBody}})
+        }
       } else {
         await octokit.graphql(addComment, {input: {subjectId: issueID, body: sanitizedBody}})
       }