source: imaps-frontend/node_modules/resolve-from/index.js@ d565449

'use strict';
const path = require('path');
const Module = require('module');
const fs = require('fs');

const resolveFrom = (fromDir, moduleId, silent) => {
        if (typeof fromDir !== 'string') {
                throw new TypeError(`Expected \`fromDir\` to be of type \`string\`, got \`${typeof fromDir}\``);
        }

        if (typeof moduleId !== 'string') {
                throw new TypeError(`Expected \`moduleId\` to be of type \`string\`, got \`${typeof moduleId}\``);
        }

        try {
                fromDir = fs.realpathSync(fromDir);
        } catch (err) {
                if (err.code === 'ENOENT') {
                        fromDir = path.resolve(fromDir);
                } else if (silent) {
                        return null;
                } else {
                        throw err;
                }
        }

        const fromFile = path.join(fromDir, 'noop.js');

        const resolveFileName = () => Module._resolveFilename(moduleId, {
                id: fromFile,
                filename: fromFile,
                paths: Module._nodeModulePaths(fromDir)
        });

        if (silent) {
                try {
                        return resolveFileName();
                } catch (err) {
                        return null;
                }
        }

        return resolveFileName();
};

module.exports = (fromDir, moduleId) => resolveFrom(fromDir, moduleId);
module.exports.silent = (fromDir, moduleId) => resolveFrom(fromDir, moduleId, true);