Set the packageManager key in package.json to the latest version of the given package manager

set-package-manager.sh

#!/usr/bin/env bash

# Ensure there is a manifest file
if [[ ! -f package.json ]]; then
	echo "error: no manifest file found"
	exit 1
fi

# Get the repo name for the given package manager
if [[ $1 == 'npm' ]]; then
	repo='npm/cli'
elif [[ $1 == 'yarn' ]]; then
	repo='yarnpkg/berry'
elif [[ $1 == 'pnpm' ]]; then
	repo='pnpm/pnpm'
else
	echo "error: unknown package manager '$1'"
	exit 1
fi

# Get the latest version from GitHub
version=$(
	curl -s https://api.github.com/repos/$repo/releases/latest |
		grep '"name": "v' |
		awk '{print $2}' |
		tr -d v\",
)

# Set the packageManager key in the manifest
key="$1@$version"
jq ".packageManager = \"$key\"" package.json >/tmp/package.json
mv /tmp/package.json package.json

Thank you buddy. Exactly what I wanted <3

This is the JS version of that script (did this cuz had problem with jq):

const { execSync } = require("child_process");

// Ensure there is a manifest file
if (!readFileSync("package.json")) {
	console.error("error: no manifest file found");
	process.exit(1);
}

const PACKAGE_MANAGER_NAME = process.argv[2];

const packageManagersRepo = {
	npm: "npm/cli",
	yarn: "yarnpkg/berry",
	pnpm: "pnpm/pnpm",
};

const repo = packageManagersRepo[PACKAGE_MANAGER_NAME];

if (!repo) {
	console.error(`error: unknown package manager '${PACKAGE_MANAGER_NAME}'`);
	process.exit(1);
}

// Get the latest version from GitHub
const stdout = execSync(
	`curl -s https://api.github.com/repos/${repo}/releases/latest`,
	{ encoding: "utf-8" }
);

const version = JSON.parse(stdout).name.replace("v", "");

// Set the packageManager key in the manifest
const packageJson = JSON.parse(readFileSync("package.json"));
const key = `${PACKAGE_MANAGER_NAME}@${version}`;
packageJson.packageManager = key;
writeFileSync("package.json", JSON.stringify(packageJson, null, 2));```