a bit wasteful CI/CD setup with PR snapshot release and automerged Changesets on main

@changesets__assemble-release-plan@5.2.3.patch

diff --git a/dist/assemble-release-plan.cjs.dev.js b/dist/assemble-release-plan.cjs.dev.js
index 3a37c62c975518f975c22e1b4b3974d9b325a5da..cc7b4669526b9ccddcf184f52f8cb5225cc8284e 100644
--- a/dist/assemble-release-plan.cjs.dev.js
+++ b/dist/assemble-release-plan.cjs.dev.js
@@ -132,16 +132,38 @@ function determineDependents({
         } of dependencyVersionRanges) {
           if (nextRelease.type === "none") {
             continue;
-          } else if (shouldBumpMajor({
-            dependent,
+          } else if (shouldBumpsForPeerDeps({
             depType,
             versionRange,
-            releases,
             nextRelease,
             preInfo,
             onlyUpdatePeerDependentsWhenOutOfRange: config.___experimentalUnsafeOptions_WILL_CHANGE_IN_PATCH.onlyUpdatePeerDependentsWhenOutOfRange
           })) {
-            type = "major";
+            // TODO: Remove this patch when https://github.com/changesets/changesets/pull/1132/files
+            // is merged and released. Configure the new `updatePeerDependencies` option to `follow`.
+            if (!releases.has(dependent)) {
+              type = nextRelease.type;
+            } else {
+              switch (releases.get(dependent).type) {
+                case "none":
+                  type = nextRelease.type;
+                  break;
+
+                case "patch":
+                  if (nextRelease.type !== "patch") {
+                    type = nextRelease.type;
+                  }
+
+                  break;
+
+                case "minor":
+                  if (nextRelease.type === "major") {
+                    type = nextRelease.type;
+                  }
+
+                  break;
+              }
+            }
           } else if ((!releases.has(dependent) || releases.get(dependent).type === "none") && (config.___experimentalUnsafeOptions_WILL_CHANGE_IN_PATCH.updateInternalDependents === "always" || !semver__default['default'].satisfies(incrementVersion(nextRelease, preInfo), versionRange))) {
             switch (depType) {
               case "dependencies":
@@ -239,20 +261,17 @@ function getDependencyVersionRanges(dependentPkgJSON, dependencyRelease) {
   return dependencyVersionRanges;
 }
 
-function shouldBumpMajor({
-  dependent,
+function shouldBumpsForPeerDeps({
   depType,
   versionRange,
-  releases,
   nextRelease,
   preInfo,
   onlyUpdatePeerDependentsWhenOutOfRange
 }) {
   // we check if it is a peerDependency because if it is, our dependent bump type might need to be major.
-  return depType === "peerDependencies" && nextRelease.type !== "none" && nextRelease.type !== "patch" && ( // 1. If onlyUpdatePeerDependentsWhenOutOfRange set to true, bump major if the version is leaving the range.
+  return depType === "peerDependencies" && nextRelease.type !== "none" && ( // 1. If onlyUpdatePeerDependentsWhenOutOfRange set to true, bump major if the version is leaving the range.
   // 2. If onlyUpdatePeerDependentsWhenOutOfRange set to false, bump major regardless whether or not the version is leaving the range.
-  !onlyUpdatePeerDependentsWhenOutOfRange || !semver__default['default'].satisfies(incrementVersion(nextRelease, preInfo), versionRange)) && ( // bump major only if the dependent doesn't already has a major release.
-  !releases.has(dependent) || releases.has(dependent) && releases.get(dependent).type !== "major");
+  !onlyUpdatePeerDependentsWhenOutOfRange || !semver__default['default'].satisfies(incrementVersion(nextRelease, preInfo), versionRange));
 }
 
 // This function takes in changesets and returns one release per
diff --git a/dist/assemble-release-plan.cjs.prod.js b/dist/assemble-release-plan.cjs.prod.js
index 87b4c104bf3fa53ba498ced6f81eda0ed4c86436..c37ce949b9ce75b03027f4c06d4d3a8ed54dee32 100644
--- a/dist/assemble-release-plan.cjs.prod.js
+++ b/dist/assemble-release-plan.cjs.prod.js
@@ -70,15 +70,24 @@ function determineDependents({releases: releases, packagesByName: packagesByName
       if (!dependentPackage) throw new Error("Dependency map is incorrect");
       if (config.ignore.includes(dependent)) type = "none"; else {
         const dependencyVersionRanges = getDependencyVersionRanges(dependentPackage.packageJson, nextRelease);
-        for (const {depType: depType, versionRange: versionRange} of dependencyVersionRanges) if ("none" !== nextRelease.type) if (shouldBumpMajor({
-          dependent: dependent,
+        for (const {depType: depType, versionRange: versionRange} of dependencyVersionRanges) if ("none" !== nextRelease.type) if (shouldBumpsForPeerDeps({
           depType: depType,
           versionRange: versionRange,
-          releases: releases,
           nextRelease: nextRelease,
           preInfo: preInfo,
           onlyUpdatePeerDependentsWhenOutOfRange: config.___experimentalUnsafeOptions_WILL_CHANGE_IN_PATCH.onlyUpdatePeerDependentsWhenOutOfRange
-        })) type = "major"; else if (!(releases.has(dependent) && "none" !== releases.get(dependent).type || "always" !== config.___experimentalUnsafeOptions_WILL_CHANGE_IN_PATCH.updateInternalDependents && semver__default.default.satisfies(incrementVersion(nextRelease, preInfo), versionRange))) switch (depType) {
+        })) if (releases.has(dependent)) switch (releases.get(dependent).type) {
+         case "none":
+          type = nextRelease.type;
+          break;
+
+         case "patch":
+          "patch" !== nextRelease.type && (type = nextRelease.type);
+          break;
+
+         case "minor":
+          "major" === nextRelease.type && (type = nextRelease.type);
+        } else type = nextRelease.type; else if (!(releases.has(dependent) && "none" !== releases.get(dependent).type || "always" !== config.___experimentalUnsafeOptions_WILL_CHANGE_IN_PATCH.updateInternalDependents && semver__default.default.satisfies(incrementVersion(nextRelease, preInfo), versionRange))) switch (depType) {
          case "dependencies":
          case "optionalDependencies":
          case "peerDependencies":
@@ -129,8 +138,8 @@ function getDependencyVersionRanges(dependentPkgJSON, dependencyRelease) {
   return dependencyVersionRanges;
 }
 
-function shouldBumpMajor({dependent: dependent, depType: depType, versionRange: versionRange, releases: releases, nextRelease: nextRelease, preInfo: preInfo, onlyUpdatePeerDependentsWhenOutOfRange: onlyUpdatePeerDependentsWhenOutOfRange}) {
-  return "peerDependencies" === depType && "none" !== nextRelease.type && "patch" !== nextRelease.type && (!onlyUpdatePeerDependentsWhenOutOfRange || !semver__default.default.satisfies(incrementVersion(nextRelease, preInfo), versionRange)) && (!releases.has(dependent) || releases.has(dependent) && "major" !== releases.get(dependent).type);
+function shouldBumpsForPeerDeps({depType: depType, versionRange: versionRange, nextRelease: nextRelease, preInfo: preInfo, onlyUpdatePeerDependentsWhenOutOfRange: onlyUpdatePeerDependentsWhenOutOfRange}) {
+  return !("peerDependencies" !== depType || "none" === nextRelease.type || onlyUpdatePeerDependentsWhenOutOfRange && semver__default.default.satisfies(incrementVersion(nextRelease, preInfo), versionRange));
 }
 
 function flattenReleases(changesets, packagesByName, ignoredPackages) {
diff --git a/dist/assemble-release-plan.esm.js b/dist/assemble-release-plan.esm.js
index c29c008dd709f07cabcb07feff86012c35a01ce5..188668cabc59d078708ba52d9e55bd0ca3e5fdf4 100644
--- a/dist/assemble-release-plan.esm.js
+++ b/dist/assemble-release-plan.esm.js
@@ -124,16 +124,38 @@ function determineDependents({
         } of dependencyVersionRanges) {
           if (nextRelease.type === "none") {
             continue;
-          } else if (shouldBumpMajor({
-            dependent,
+          } else if (shouldBumpsForPeerDeps({
             depType,
             versionRange,
-            releases,
             nextRelease,
             preInfo,
             onlyUpdatePeerDependentsWhenOutOfRange: config.___experimentalUnsafeOptions_WILL_CHANGE_IN_PATCH.onlyUpdatePeerDependentsWhenOutOfRange
           })) {
-            type = "major";
+            // TODO: Remove this patch when https://github.com/changesets/changesets/pull/1132/files
+            // is merged and released. Configure the new `updatePeerDependencies` option to `follow`.
+            if (!releases.has(dependent)) {
+              type = nextRelease.type;
+            } else {
+              switch (releases.get(dependent).type) {
+                case "none":
+                  type = nextRelease.type;
+                  break;
+
+                case "patch":
+                  if (nextRelease.type !== "patch") {
+                    type = nextRelease.type;
+                  }
+
+                  break;
+
+                case "minor":
+                  if (nextRelease.type === "major") {
+                    type = nextRelease.type;
+                  }
+
+                  break;
+              }
+            }
           } else if ((!releases.has(dependent) || releases.get(dependent).type === "none") && (config.___experimentalUnsafeOptions_WILL_CHANGE_IN_PATCH.updateInternalDependents === "always" || !semver.satisfies(incrementVersion(nextRelease, preInfo), versionRange))) {
             switch (depType) {
               case "dependencies":
@@ -231,20 +253,17 @@ function getDependencyVersionRanges(dependentPkgJSON, dependencyRelease) {
   return dependencyVersionRanges;
 }
 
-function shouldBumpMajor({
-  dependent,
+function shouldBumpsForPeerDeps({
   depType,
   versionRange,
-  releases,
   nextRelease,
   preInfo,
   onlyUpdatePeerDependentsWhenOutOfRange
 }) {
   // we check if it is a peerDependency because if it is, our dependent bump type might need to be major.
-  return depType === "peerDependencies" && nextRelease.type !== "none" && nextRelease.type !== "patch" && ( // 1. If onlyUpdatePeerDependentsWhenOutOfRange set to true, bump major if the version is leaving the range.
+  return depType === "peerDependencies" && nextRelease.type !== "none" && ( // 1. If onlyUpdatePeerDependentsWhenOutOfRange set to true, bump major if the version is leaving the range.
   // 2. If onlyUpdatePeerDependentsWhenOutOfRange set to false, bump major regardless whether or not the version is leaving the range.
-  !onlyUpdatePeerDependentsWhenOutOfRange || !semver.satisfies(incrementVersion(nextRelease, preInfo), versionRange)) && ( // bump major only if the dependent doesn't already has a major release.
-  !releases.has(dependent) || releases.has(dependent) && releases.get(dependent).type !== "major");
+  !onlyUpdatePeerDependentsWhenOutOfRange || !semver.satisfies(incrementVersion(nextRelease, preInfo), versionRange));
 }
 
 // This function takes in changesets and returns one release per
diff --git a/src/determine-dependents.ts b/src/determine-dependents.ts
index 97359614f16562adcb66c68011ad3b78b01a1936..719fbe41fb0f2aa5d493258618009b173e44e893 100644
--- a/src/determine-dependents.ts
+++ b/src/determine-dependents.ts
@@ -68,11 +68,9 @@ export default function determineDependents({
             if (nextRelease.type === "none") {
               continue;
             } else if (
-              shouldBumpMajor({
-                dependent,
+              shouldBumpsForPeerDeps({
                 depType,
                 versionRange,
-                releases,
                 nextRelease,
                 preInfo,
                 onlyUpdatePeerDependentsWhenOutOfRange:
@@ -80,7 +78,27 @@ export default function determineDependents({
                     .onlyUpdatePeerDependentsWhenOutOfRange,
               })
             ) {
-              type = "major";
+              // TODO: Remove this patch when https://github.com/changesets/changesets/pull/1132/files
+              // is merged and released. Configure the new `updatePeerDependencies` option to `follow`.
+              if (!releases.has(dependent)) {
+                type = nextRelease.type;
+              } else {
+                switch (releases.get(dependent)!.type) {
+                  case "none":
+                    type = nextRelease.type;
+                    break;
+                  case "patch":
+                    if (nextRelease.type !== "patch") {
+                      type = nextRelease.type;
+                    }
+                    break;
+                  case "minor":
+                    if (nextRelease.type === "major") {
+                      type = nextRelease.type;
+                    }
+                    break;
+                }
+              }
             } else if (
               (!releases.has(dependent) ||
                 releases.get(dependent)!.type === "none") &&
@@ -206,19 +224,15 @@ function getDependencyVersionRanges(
   return dependencyVersionRanges;
 }
 
-function shouldBumpMajor({
-  dependent,
+function shouldBumpsForPeerDeps({
   depType,
   versionRange,
-  releases,
   nextRelease,
   preInfo,
   onlyUpdatePeerDependentsWhenOutOfRange,
 }: {
-  dependent: string;
   depType: DependencyType;
   versionRange: string;
-  releases: Map<string, InternalRelease>;
   nextRelease: InternalRelease;
   preInfo: PreInfo | undefined;
   onlyUpdatePeerDependentsWhenOutOfRange: boolean;
@@ -227,16 +241,9 @@ function shouldBumpMajor({
   return (
     depType === "peerDependencies" &&
     nextRelease.type !== "none" &&
-    nextRelease.type !== "patch" &&
     // 1. If onlyUpdatePeerDependentsWhenOutOfRange set to true, bump major if the version is leaving the range.
     // 2. If onlyUpdatePeerDependentsWhenOutOfRange set to false, bump major regardless whether or not the version is leaving the range.
     (!onlyUpdatePeerDependentsWhenOutOfRange ||
-      !semver.satisfies(
-        incrementVersion(nextRelease, preInfo),
-        versionRange
-      )) &&
-    // bump major only if the dependent doesn't already has a major release.
-    (!releases.has(dependent) ||
-      (releases.has(dependent) && releases.get(dependent)!.type !== "major"))
+      !semver.satisfies(incrementVersion(nextRelease, preInfo), versionRange))
   );
 }

changeset-commit.js

// @ts-check

const { default: changesets } = require('@changesets/cli/commit')

module.exports.default = {
  // We include changesets in usual commits.
  getAddMessage: null,
  /**
   * @param {import('@changesets/types').ReleasePlan} releasePlan
   * @param {{
   *   skipCI?: boolean | 'add' | 'version'
   * }} options
   */
  async getVersionMessage(releasePlan, options) {
    let message = await changesets.getVersionMessage(releasePlan, options)

    const hasMajor = releasePlan.releases.some((release) => release.type === 'major')
    
    // This prefix stops the breaking changes from getting automatically released. See ci.yml.
    if (hasMajor) message = 'MAJOR 🚀 ' + message.trimStart()
    return message
  },
}

ci.yml

name: 'Check & Release'

concurrency:
  group: ${{ github.ref_name }}
  cancel-in-progress: true

on:
  pull_request:
  push:
    branches:
      - main

jobs:
  ci:
    name: Check and prerelease
    if: ${{ github.head_ref != 'changeset-release/main' }}
    runs-on: ubuntu-latest
    timeout-minutes: 20
    env:
      NPM_TOKEN: ${{ secrets.GRAPHPROTOCOL_NPM_TOKEN }}
      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      TURBO_TOKEN: ${{ secrets.TURBO_TOKEN }}
      TURBO_TEAM: ${{ vars.TURBO_TEAM }}
    steps:
      - name: Checkout the repo
        uses: actions/checkout@v3
        with:
          fetch-depth: 20

      - name: Set up pnpm
        uses: pnpm/action-setup@v2

      - name: Install dependencies
        run: |
          echo -e "\n//registry.npmjs.org/:_authToken=${{ env.NPM_TOKEN }}" >> .npmrc
          pnpm install

      - name: Build
        run: pnpm build

      - name: Lint and typecheck
        run: pnpm check

      - name: Run tests
        run: pnpm test

      - name: Get NPM tag
        run: |
          tag="${BRANCH_NAME##*/}"
          tag="${tag//_/-}" # Replace underscores with hyphens
          echo "npm tag: $tag"
          echo "tag=$tag" >> $GITHUB_OUTPUT
        id: get_tag
        env:
          BRANCH_NAME: ${{ github.head_ref || github.ref_name }}

      - name: Release snapshot
        if: ${{ github.ref_name != 'main' && !github.event.pull_request.draft }}
        uses: the-guild-org/changesets-snapshot-action@v0.0.1
        with:
          tag: ${{ steps.get_tag.outputs.tag }}

      - name: Create a release PR or publish to NPM
        if: ${{ github.ref_name == 'main' }}
        uses: changesets/action@v1
        with:
          version: pnpm changeset version
          publish: pnpm changeset:publish
        env:
          GITHUB_TOKEN: ${{ secrets.FINEGRAINED_WRITE_GITHUB_PAT }}

      - name: Report package size change
        if: ${{ github.ref_name != 'main' && !github.event.pull_request.draft }}
        uses: hasparus/pkg-size-action@develop
        with:
          build-command: pnpm build
          display-size: gzip
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  release:
    name: Automerge non-major release PR
    if: ${{ github.head_ref == 'changeset-release/main' }}
    runs-on: ubuntu-latest
    timeout-minutes: 2
    steps:
      - name: Checkout the repo
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Set up pnpm
        uses: pnpm/action-setup@v2

      - name: Install dependencies
        run: |
          echo -e "\n//registry.npmjs.org/:_authToken=${{ env.NPM_TOKEN }}" >> .npmrc
          pnpm install

      - name: Check if release is semver Major
        continue-on-error: true
        run: |
          git fetch origin main
          git log origin/main..HEAD | grep -q "MAJOR 🚀"
        id: is_major

      - name: Merge patch and minor release PRs
        if: steps.is_major.outcome == 'failure'
        uses: juliangruber/merge-pull-request-action@v1
        with:
          github-token: ${{ secrets.FINEGRAINED_WRITE_GITHUB_PAT }}
          number: ${{ github.event.pull_request.number }}
          repo: ${{ github.repository }}
          method: squash

config.json

{
  "$schema": "https://unpkg.com/@changesets/config@2.3.0/schema.json",
  "changelog": "@changesets/cli/changelog",
  "commit": ["../.github/scripts/changeset-commit.cjs", { "skipCI": false }],
  "fixed": [],
  "linked": [],
  "access": "public",
  "baseBranch": "origin/main",
  "updateInternalDependencies": "patch",
  "ignore": [],
  "snapshot": {
    "useCalculatedVersion": true,
    "prereleaseTemplate": "{tag}-{timestamp}-{commit}"
  },
  "___experimentalUnsafeOptions_WILL_CHANGE_IN_PATCH": {
    "onlyUpdatePeerDependentsWhenOutOfRange": true
  }
}