@tobiastengler/create-relay-app/dist/misc/CommandRunner.js

Easy configuration of Relay for existing projects

import { spawn } from "child_process";
import { EOL } from "os";
export class CommandRunner {
    run(command, args, cwd) {
        return new Promise((resolve, reject) => {
            const child = spawn(command, args, {
                cwd: cwd,
                shell: true,
            });
            let errorMsg = "";
            child.stderr.setEncoding("utf-8");
            child.stderr.on("data", (data) => {
                errorMsg += data;
            });
            child.on("close", (code) => {
                if (code !== 0) {
                    let output = `Command \"${command} ${args.join(" ")}\" failed`;
                    if (!!errorMsg) {
                        output += EOL + EOL + "  " + errorMsg.split(EOL).join(EOL + "  ");
                    }
                    reject(output);
                    return;
                }
                resolve();
            });
        });
    }
}