DEV: add script to switch from yarn to pnpm

scripts/switch-yarn-to-pnpm.sh

@@ -0,0 +1,94 @@
+#!/bin/bash
+set -euxo pipefail
+
+# Helper functions and setup of jq
+file_exists() {
+ [ -f "$1" ]
+}
+
+command_exists() {
+ command -v "$1" >/dev/null 2>&1
+}
+
+if ! command_exists jq; then
+ echo "jq is not installed. Attempting to install it..."
+ if command_exists apt-get; then
+ sudo apt-get update && sudo apt-get install -y jq
+ elif command_exists brew; then
+ brew install jq
+ else
+ echo "Error: Cannot install jq. Please install it manually and run this script again."
+ exit 1
+ fi
+fi
+
+cd repo
+
+if ! file_exists package.json; then
+ echo "ERROR: 'package.json' is missing. Cannot proceed with conversion."
+ exit 1
+fi
+
+if file_exists yarn.lock; then
+ echo "Removing yarn.lock..."
+ rm yarn.lock
+fi
+
+if file_exists package-lock.json; then
+ echo "Removing package-lock.json..."
+ rm package-lock.json
+fi
+
+echo "Replacing 'yarn' with 'pnpm' in package.json scripts..."
+jq 'if has("scripts") then .scripts |= with_entries(.value |= gsub("yarn "; "pnpm ")) else . end' package.json > temp.json && mv temp.json package.json
+
+echo "Updating engines clause in package.json..."
+jq '.engines = (.engines // {}) |
+ .engines *= {
+ "node": ">= 18",
+ "npm": "please-use-pnpm",
+ "yarn": "please-use-pnpm",
+ "pnpm": ">= 9"
+}' package.json > temp.json && mv temp.json package.json
+
+if ! file_exists .pnpmfile.cjs; then
+ echo "Adding .pnpmfile hook to clean up yarn managed node_modules..."
+ cat << 'EOF' > .pnpmfile.cjs
+const fs = require("fs");
+const { execSync } = require("child_process");
+
+const currRoot = __dirname;
+
+if (fs.existsSync(`${currRoot}/node_modules/.yarn-integrity`)) {
+ console.log(
+ "Detected yarn-managed node_modules. Performing one-time cleanup..."
+ );
+
+ // Delete entire contents of all node_modules directories
+ // But keep the directories themselves, in case they are volume mounts (e.g. in devcontainer)
+ execSync(
+ `find ${currRoot}/node_modules -mindepth 1 -maxdepth 1 -exec rm -rf {} +`
+ );
+
+ console.log("cleanup done");
+}
+EOF
+fi
+
+if ! file_exists .npmrc; then
+ echo "Creating .npmrc..."
+ echo -e "engine-strict = true\nauto-install-peers = false" > .npmrc
+fi
+
+echo "Installing dependencies with pnpm..."
+pnpm install
+
+echo "Updating README with pnpm"
+for file in README.md README; do
+ if [ -f "$file" ]; then
+ echo "Replacing 'yarn' with 'pnpm' in $file..."
+ sed -i '' 's/yarn/pnpm/g' "$file"
+ fi
+done
+
+echo "Conversion complete!"