analyze-es6-modules/dist/utility.js

Performs static analysis of ES6 modules in your codebase.

'use strict';

Object.defineProperty(exports, "__esModule", {
	value: true
});
var fs = require('fs');
var path = require('path');
var glob = require('glob');
var Promise = require('bluebird');

var expandFilePatterns = function expandFilePatterns(cwd, patterns) {
	var sources = patterns.filter(function (pattern) {
		return pattern[0] !== '!';
	});
	var ignore = patterns.filter(function (pattern) {
		return pattern[0] === '!';
	}).map(function (pattern) {
		return pattern.substring(1);
	}).concat(['node_modules/**']);

	var globSearches = sources.map(function (pattern) {
		return new Promise(function (resolve, reject) {
			var options = { cwd: cwd, ignore: ignore };

			glob(pattern, options, function (error, filePaths) {
				if (error) {
					reject(error);
				} else {
					resolve(filePaths);
				}
			});
		});
	});

	return Promise.all(globSearches).then(function (allMatches) {
		var allPaths = {};

		for (var i = 0; i < allMatches.length; ++i) {
			var matches = allMatches[i];

			for (var j = 0; j < matches.length; ++j) {
				var absolute = path.resolve(cwd, matches[j]);

				allPaths[absolute] = true;
			}
		}

		return Object.keys(allPaths);
	});
};

var readFileFromFileSystem = function readFileFromFileSystem(filePath) {
	return new Promise(function (resolve, reject) {
		fs.readFile(filePath, 'utf8', function (error, contents) {
			if (error) {
				reject(error);
			} else {
				resolve(contents);
			}
		});
	});
};

exports.expandFilePatterns = expandFilePatterns;
exports.readFileFromFileSystem = readFileFromFileSystem;