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

Easy configuration of Relay for existing projects

export class YarnPackageManager {
    constructor(cwd, cmdRunner) {
        this.cwd = cwd;
        this.cmdRunner = cmdRunner;
        this.id = "yarn";
    }
    addDependency(packages) {
        return this.installDependency(packages, false);
    }
    addDevDependency(packages) {
        return this.installDependency(packages, true);
    }
    installDependency(packages, isDevDependency) {
        const args = ["add", "--exact", "--cwd", this.cwd];
        if (isDevDependency) {
            args.push("--dev");
        }
        if (typeof packages === "string") {
            args.push(packages);
        }
        else {
            args.push(...packages);
        }
        return this.cmdRunner.run("yarn", args, this.cwd);
    }
}