bump-changes-from-tag.sh

A shell script to automatically bump the version of Node.js packages that have changed since a specified git revision in a Rush.js monorepo, and update their dependencies accordingly.

Features

• ✅ Detects packages that have changed since a given git revision
• ✅ Supports major, minor, and patch version bumps (patch is default)
• ✅ Updates workspace dependencies across all packages
• ✅ Handles both publishable and private packages
• ✅ Supports JSON with comments in rush.json
• ✅ Cross-shell compatible (bash 4+, zsh)
• ✅ Colored output for better visibility

Usage

./common/scripts/bump-changes-from-tag.sh <git-revision> [major|minor|patch]

Examples

# Patch bump (default) for packages changed in the last 5 commits
./common/scripts/bump-changes-from-tag.sh HEAD~5

# Minor bump for packages changed since a specific tag
./common/scripts/bump-changes-from-tag.sh v0.7.0 minor

# Major bump for packages changed since a specific commit
./common/scripts/bump-changes-from-tag.sh abc1234 major

# Patch bump (explicit)
./common/scripts/bump-changes-from-tag.sh HEAD~3 patch

Version Bump Types

How it works

1. Detects changes: Uses git diff --name-only to find files changed since the specified revision
2. Identifies packages: Parses rush.json to get all packages and their folders
3. Matches changes: Determines which packages have changed files
4. Bumps versions: Increments the version based on the specified bump type (patch/minor/major)
5. Updates dependencies: Updates workspace dependencies in all packages to use the new versions

Prerequisites

• Git repository with Rush.js monorepo setup
• Node.js (for JSON parsing and manipulation)
• Bash 4+ or zsh (for associative arrays)

Output Example

[INFO] Repository root: /path/to/repo
[INFO] Checking changes since: HEAD~3
[INFO] Bump type: minor
[INFO] Getting changed files since HEAD~3...
[INFO] Changed files:
  packages/core/src/index.ts
  packages/client/src/client.ts
[SUCCESS] Package @company/core changed: 0.7.0 -> 0.8.0 (minor)
[SUCCESS] Package @company/client changed: 0.7.0 -> 0.8.0 (minor)
[INFO] Found 2 package(s) to update
[INFO] Updating package versions...
[SUCCESS] Updated @company/core to version 0.8.0
[SUCCESS] Updated @company/client to version 0.8.0
[INFO] Updating dependencies across all packages...
[SUCCESS] Version bump complete!

[INFO] Summary of changes:
  ✓ @company/core -> 0.8.0 (will be published)
  ✓ @company/client -> 0.8.0 (will be published)

[INFO] Next steps:
  1. Review the changes: git diff
  2. Run tests: rush test
  3. Build all packages: rush build
  4. Commit changes: git add . && git commit -m 'Bump versions'
  5. For publishable packages, run: rush publish

Safety Features

• ✅ Validates git repository and rush.json existence
• ✅ Handles version format validation
• ✅ Uses temporary files for safe processing
• ✅ Provides clear error messages
• ✅ Shows summary before completion

Supported Version Formats

• Standard semver: 1.2.3
• Pre-release versions: 1.2.3-alpha.1

Bump Behavior

• Patch: 1.2.3 → 1.2.4 (increments patch)
• Minor: 1.2.3 → 1.3.0 (increments minor, resets patch)
• Major: 1.2.3 → 2.0.0 (increments major, resets minor and patch)

Dependencies Updated

The script updates package references in:

• dependencies
• devDependencies
• peerDependencies

Both regular dependencies (^1.0.0) and workspace dependencies (workspace:^1.0.0) are supported.