@tobiastengler/create-relay-app/dist/misc/packageManagers/NpmPackageManager.js

Easy configuration of Relay for existing projects

export class NpmPackageManager {
    constructor(cwd, cmdRunner) {
        this.cwd = cwd;
        this.cmdRunner = cmdRunner;
        this.id = "npm";
    }
    addDependency(packages) {
        return this.installDependency(packages, false);
    }
    addDevDependency(packages) {
        return this.installDependency(packages, true);
    }
    installDependency(packages, isDevDependency) {
        const args = ["install", isDevDependency ? "--save-dev" : "--save", "--legacy-peer-deps"];
        if (typeof packages === "string") {
            args.push(packages);
        }
        else {
            args.push(...packages);
        }
        return this.cmdRunner.run("npm", args, this.cwd);
    }
}