Add script for pack response postback (microsoft#31748)

package.json

@@ -48,11 +48,13 @@
         "@types/mocha": "latest",
         "@types/ms": "latest",
         "@types/node": "8.5.5",
+        "@types/node-fetch": "^2.3.4",
         "@types/q": "latest",
         "@types/source-map-support": "latest",
         "@types/through2": "latest",
         "@types/travis-fold": "latest",
         "@types/xml2js": "^0.4.0",
+        "azure-devops-node-api": "^8.0.0",
         "browser-resolve": "^1.11.2",
         "browserify": "latest",
         "chai": "latest",
@@ -74,6 +76,7 @@
         "mocha": "latest",
         "mocha-fivemat-progress-reporter": "latest",
         "ms": "latest",
+        "node-fetch": "^2.6.0",
         "plugin-error": "latest",
         "pretty-hrtime": "^1.0.3",
         "prex": "^0.4.3",

scripts/post-vsts-artifact-comment.js

@@ -0,0 +1,64 @@
+// @ts-check
+/// <reference lib="esnext.asynciterable" />
+// Must reference esnext.asynciterable lib, since octokit uses AsyncIterable internally
+const Octokit = require("@octokit/rest");
+const ado = require("azure-devops-node-api");
+const { default: fetch } = require("node-fetch");
+
+async function main() {
+    if (!process.env.SOURCE_ISSUE) {
+        throw new Error("No source issue specified");
+    }
+    if (!process.env.BUILD_BUILDID) {
+        throw new Error("No build ID specified");
+    }
+    // The pipelines API does _not_ make getting the direct URL to a specific file _within_ an artifact trivial
+    const cli = new ado.WebApi("https://typescript.visualstudio.com/defaultcollection", ado.getHandlerFromToken("")); // Empty token, anon auth
+    const build = await cli.getBuildApi();
+    const artifact = await build.getArtifact("typescript", +process.env.BUILD_BUILDID, "tgz");
+    const updatedUrl = new URL(artifact.resource.url);
+    updatedUrl.search = `artifactName=tgz&fileId=${artifact.resource.data}&fileName=manifest`;
+    const resp = await (await fetch(`${updatedUrl}`)).json();
+    const file = resp.items[0];
+    const tgzUrl = new URL(artifact.resource.url);
+    tgzUrl.search = `artifactName=tgz&fileId=${file.blob.id}&fileName=${file.path}`;
+    const link = "" + tgzUrl;
+    const gh = new Octokit();
+    gh.authenticate({
+        type: "token",
+        token: process.argv[2]
+    });
+    await gh.issues.createComment({
+        number: +process.env.SOURCE_ISSUE,
+        owner: "Microsoft",
+        repo: "TypeScript",
+        body: `Hey @${process.env.REQUESTING_USER}, I've packed this into [an installable tgz](${link}). You can install it for testing by referencing it in your \`package.json\` like so:
+\`\`\`
+{
+    "devDependencies": {
+        "typescript": "${link}"
+    }
+}
+\`\`\`
+and then running \`npm install\`.
+`
+    });
+}
+
+main().catch(async e => {
+    console.error(e);
+    process.exitCode = 1;
+    if (process.env.SOURCE_ISSUE) {
+        const gh = new Octokit();
+        gh.authenticate({
+            type: "token",
+            token: process.argv[2]
+        });
+        await gh.issues.createComment({
+            number: +process.env.SOURCE_ISSUE,
+            owner: "Microsoft",
+            repo: "TypeScript",
+            body: `Hey @${process.env.REQUESTING_USER}, something went wrong when looking for the build artifact. ([You can check the log here](https://typescript.visualstudio.com/TypeScript/_build/index?buildId=${process.env.BUILD_BUILDID}&_a=summary)).`
+        });
+    }
+});