source: imaps-frontend/node_modules/find-cache-dir/index.js@ 79a0317

import process from 'node:process';
import path from 'node:path';
import fs from 'node:fs';
import commonPathPrefix from 'common-path-prefix';
import {packageDirectorySync} from 'pkg-dir';

const {env, cwd} = process;

const isWritable = path => {
        try {
                fs.accessSync(path, fs.constants.W_OK);
                return true;
        } catch {
                return false;
        }
};

function useDirectory(directory, options) {
        if (options.create) {
                fs.mkdirSync(directory, {recursive: true});
        }

        if (options.thunk) {
                return (...arguments_) => path.join(directory, ...arguments_);
        }

        return directory;
}

function getNodeModuleDirectory(directory) {
        const nodeModules = path.join(directory, 'node_modules');

        if (
                !isWritable(nodeModules)
                        && (fs.existsSync(nodeModules) || !isWritable(path.join(directory)))
        ) {
                return;
        }

        return nodeModules;
}

export default function findCacheDirectory(options = {}) {
        if (env.CACHE_DIR && !['true', 'false', '1', '0'].includes(env.CACHE_DIR)) {
                return useDirectory(path.join(env.CACHE_DIR, options.name), options);
        }

        let {cwd: directory = cwd()} = options;

        if (options.files) {
                directory = commonPathPrefix(options.files.map(file => path.resolve(directory, file)));
        }

        directory = packageDirectorySync({cwd: directory});

        if (!directory) {
                return;
        }

        const nodeModules = getNodeModuleDirectory(directory);
        if (!nodeModules) {
                return;
        }

        return useDirectory(path.join(directory, 'node_modules', '.cache', options.name), options);
}