probot/lib/helpers/update-env.js

A framework for building GitHub Apps to automate and improve your workflow

import { readFileSync, writeFileSync } from "node:fs";
import { join as pathJoin } from "node:path";
import dotenv from "dotenv";
function escapeNewlines(str) {
    return str.replace(/\n/g, "\\n");
}
function format(key, value) {
    return `${key}=${escapeNewlines(value)}`;
}
export function updateEnv(env) {
    const filename = pathJoin(process.cwd(), ".env");
    // Merge with existing values
    try {
        const existing = dotenv.parse(readFileSync(filename, "utf-8"));
        env = Object.assign(existing, env);
    }
    catch (err) {
        if (err.code !== "ENOENT") {
            throw err;
        }
    }
    const contents = Object.keys(env)
        .map((key) => format(key, env[key]))
        .join("\n");
    // Write to file
    writeFileSync(filename, contents);
    // Update current env with new values
    Object.assign(process.env, env);
    return env;
}