mira
Version:
NearForm Accelerator for Cloud Native Serverless AWS
112 lines • 4.01 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
class FileHelpers {
/**
* Gets the most relevant application directory. This is defined by taking
* the currently executing file folder, and checking or moving up until the
* directory is no longer inside a node_modules folder.
* @param {String} path (Optional) If provided, attempts to lookup from the
* from directory.
* @return {String} The most relevant application directory.
*/
static getApplicationDirectory(path = '') {
if (!path.length) {
path = process.cwd();
}
path = require('path').resolve(path);
if (!require('fs').statSync(path).isDirectory()) {
path = require('path').dirname(path);
}
path = FileHelpers.normalize(path);
while (path.includes('node_modules')) {
path = path.split('/').slice(0, -1).join('/');
}
return FileHelpers.normalize(path);
}
/**
* Heuristic for guessing main directory. This includes resolving the
* following use cases:
* 1) ./node_modules/.bin scripts
* 2) ./node_modules/PACKAGE_NAME/file scripts
* 3) ./SUBDIR/file calls
*
* The first non-node_modules folder with a package.json in it is used.
*/
static getMainDirectory() {
if (FileHelpers.getPackageDirectory() === false) {
return false;
}
return FileHelpers.normalize(FileHelpers.getPackageDirectory(FileHelpers.getApplicationDirectory()));
}
/**
* Gets the directory of a package.
* @param {String} path The path from which to look for the package directory.
* @returns {String} The directory containing the package.json file.
*/
static getPackageDirectory(path) {
if (FileHelpers.getPackageFile(path) === false) {
return false;
}
return FileHelpers.normalize(FileHelpers.getPackageFile(path).split('/').slice(0, -1).join('/'));
}
/**
* Gets the package.json given a file path. If not found in the filepath
* directory, moves up a directory.
* @param {String} file The file path to search from.
* @return {Boolean|String} False if no file is found.
*/
static getPackageFile(path) {
if (!path || path === undefined) {
path = process.cwd();
}
path = FileHelpers.normalize(path); // Why would this fail?
if (!require('fs').existsSync(path)) {
return false;
}
try {
path = FileHelpers.normalize(path); // Why would this fail?
}
catch (e) {
try {
if (require('fs').existsSync(process.cwd() + '/' + path)) {
path = FileHelpers.normalize(process.cwd() + '/' + path);
}
}
catch (e) {
return false;
}
}
if (!require('fs').statSync(path).isDirectory()) {
path = require('path').dirname(path);
}
if (path === undefined) {
return false;
}
while (!require('fs').existsSync(path + '/package.json') &&
path.length > 1 && path.split('/').length > 1 &&
path.split('/')[1].length > 0) {
path = path.split('/').slice(0, -1).join('/');
}
if (require('fs').existsSync(path + '/package.json')) {
return path + '/package.json';
}
else {
return '';
}
}
/**
* Normalize a pathname.
*/
static normalize(path) {
// TODO: Enable the mustExist variable.
path = require('path').resolve(path).replace(/\\/g, '/');
if (process.platform === 'win32') {
return path.toLowerCase();
}
else {
return path;
}
}
}
exports.default = FileHelpers;
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