buncid/rebuilds/next-js/grabDist.ts

import fs from "fs";
import path from "path";
import grabDefaultDistName from "./(utils)/grab-default-dist-name";

const production = process.env.NODE_ENV == "production";
const isBuilding = process.env.BUILDING_APP;

type Param = {
    distDir?: string;
};

/**
 * # Grab the current distribution directory
 * @description This returns the relative path from the CWD. Eg `./.dist/build-1`
 * @returns {string | undefined}
 */
export default function grabDist(params?: Param): string | undefined {
    const distDirName = params?.distDir || grabDefaultDistName();
    const DIST_DIR = path.join(process.cwd(), distDirName);

    if (isBuilding) {
        const distDir = (() => {
            try {
                const buildNumber = fs.readFileSync(
                    `${DIST_DIR}/BUILD`,
                    "utf-8"
                );
                return `${distDirName}/build-${buildNumber}`;
            } catch (error: any) {
                console.log("Build Number Generation Error =>", error.message);
                process.exit();
            }
        })();

        return distDir;
    }

    if (production) {
        const distDir = (() => {
            try {
                const buildNumber = fs.readFileSync(
                    `${DIST_DIR}/BUILD`,
                    "utf-8"
                );
                return `${distDirName}/build-${buildNumber}`;
            } catch (error: any) {
                console.log("Build Number Parse Error =>", error.message);
                process.exit();
            }
        })();

        return distDir;
    }

    return undefined;
}