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Replace Next.js with Vercel native serverless functions #109

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Merged
Andarist merged 7 commits into from
May 8, 2026
Merged

Replace Next.js with Vercel native serverless functions #109

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a127aea
Replace Next.js with Vercel native serverless functions
marcalexiei May 4, 2026
fa38a18
avoid vercel run next auto detection
marcalexiei May 5, 2026
d6f8958
add `”type”: “module”` to `package.json`
marcalexiei May 5, 2026
6936e8d
fix extensions
Andarist May 8, 2026
e957dee
fix import flavor
Andarist May 8, 2026
324baa7
drop node-fetch and use builtin fetch
marcalexiei May 8, 2026
b2dc915
update tsconfig and oxlint to error if files have no ts extension
marcalexiei May 8, 2026
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3 changes: 2 additions & 1 deletion .gitignore
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Original file line number Diff line number Diff line change
@@ -1,2 +1,3 @@
node_modules
.next
.next
.vercel
2 changes: 1 addition & 1 deletion pages/api/webhook.ts → api/webhook.ts
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
import { createNodeMiddleware, createProbot } from "probot";

import app from "../../index";
import app from "../index.ts";

// Requires:
// - APP_ID
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4 changes: 2 additions & 2 deletions get-changed-packages.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ import type {
PackageJSON as ChangesetPackageJSON,
} from "@changesets/types";
import type { Packages, Tool } from "@manypkg/get-packages";
import { safeLoad } from "js-yaml";
import jsYaml from "js-yaml";
import micromatch from "micromatch";
import fetch from "node-fetch";
import type { ProbotOctokit } from "probot";
Expand Down Expand Up @@ -145,7 +145,7 @@ export const getChangedPackages = async ({

if (isPnpm) {
const pnpmWorkspaceContent = await fetchTextFile("pnpm-workspace.yaml");
const pnpmWorkspace = safeLoad(pnpmWorkspaceContent) as PnpmWorkspace;
const pnpmWorkspace = jsYaml.safeLoad(pnpmWorkspaceContent) as PnpmWorkspace;

tool = {
tool: "pnpm",
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2 changes: 1 addition & 1 deletion index.ts
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Expand Up @@ -6,7 +6,7 @@ import humanId from "human-id";
import markdownTable from "markdown-table";
import type { Probot, Context } from "probot";

import { getChangedPackages } from "./get-changed-packages";
import { getChangedPackages } from "./get-changed-packages.ts";

const getReleasePlanMessage = (releasePlan: ReleasePlan | null) => {
if (!releasePlan) return "";
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4 changes: 4 additions & 0 deletions knip.json
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@@ -0,0 +1,4 @@
{
"$schema": "./node_modules/knip/schema.json",
"entry": ["api/**/*.ts"]
}
5 changes: 0 additions & 5 deletions next-env.d.ts
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This file was deleted.

7 changes: 1 addition & 6 deletions package.json
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Expand Up @@ -5,6 +5,7 @@
"homepage": "https://github.com/apps/changeset-bot",
"license": "MIT",
"repository": "https://github.com/changesets/bot",
"type": "module",

@marcalexiei marcalexiei May 5, 2026

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ts files are compiled to ESM but we don't have "type": "module", so probably the runtime is threading them as CJS so they error once they execute the first import.
Let's see if now works!

"scripts": {
"format": "oxfmt",
"format:check": "oxfmt --check",
Expand All @@ -30,21 +31,15 @@
"@types/micromatch": "^4.0.1",
"@types/node": "^25.5.0",
"@types/node-fetch": "^2.5.5",
"@types/react": "^18.0.14",
"@types/react-dom": "^18.0.5",
"human-id": "^1.0.2",
"js-yaml": "^3.14.0",
"markdown-table": "^2.0.0",
"micromatch": "^4.0.2",
"next": "^12.1.6",
"node-fetch": "^2.6.1",
"probot": "^12.2.4",
"react": "^18.2.0",
"react-dom": "^18.2.0",
"typescript": "^6.0.2"
},
"devDependencies": {
"@tsconfig/next": "^2.0.6",
"knip": "^6.11.0",
"msw": "^2.12.14",
"oxfmt": "^0.42.0",
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4 changes: 2 additions & 2 deletions test/index.test.ts
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Expand Up @@ -6,8 +6,8 @@ import { setupServer } from "msw/node";
import { Probot, ProbotOctokit } from "probot";
import { aroundEach, beforeAll, describe, it } from "vitest";

import type { PRContext } from "../index";
import changesetBot from "../index";
import type { PRContext } from "../index.ts";
import changesetBot from "../index.ts";

import pullRequestOpen from "./fixtures/pull_request.opened.json";
import pullRequestSynchronize from "./fixtures/pull_request.synchronize.json";
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20 changes: 14 additions & 6 deletions tsconfig.json
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@@ -1,12 +1,20 @@
{
"extends": "@tsconfig/next/tsconfig.json",
"compilerOptions": {
"allowJs": false,
"tsBuildInfoFile": "node_modules/.cache/.tsbuildinfo",
"forceConsistentCasingInFileNames": true,
"target": "esnext",
"module": "esnext",
"moduleResolution": "bundler",
"noEmit": true,
"strict": true,
"moduleResolution": "bundler"
"forceConsistentCasingInFileNames": true,
"allowImportingTsExtensions": true,
"rewriteRelativeImportExtensions": true,
"skipLibCheck": true,
"lib": ["esnext"],
"allowJs": false,
"incremental": false,
"resolveJsonModule": true,
"isolatedModules": true
},
"include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
"include": ["**/*.ts"],
"exclude": ["node_modules"]
}
4 changes: 4 additions & 0 deletions vercel.json
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@marcalexiei marcalexiei May 5, 2026

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Added a vercel.json with a minimal configuration setting "framework": null.

This disables Vercel’s framework auto-detection, which was incorrectly identifying the project as Next.js after the migration to native serverless functions.

If the deployment still fails, check the Vercel dashboard → Project Settings → General → Framework Preset, and change it from “Next.js” to “Other”.

Note

I’m not very familiar with Vercel, so I used Claude to help identify potential causes for the log you shared.

Original file line number Diff line number Diff line change
@@ -0,0 +1,4 @@
{
"$schema": "https://openapi.vercel.sh/vercel.json",
"framework": null
}
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