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'use strict';
// Dependencies
var path = require('path');
// Load global paths
var globalPaths = require('module').globalPaths;
// Guess at NPM's global install dir
var npmGlobalPrefix;
if ('win32' === process.platform) {
npmGlobalPrefix = path.dirname(process.execPath);
} else {
npmGlobalPrefix = path.dirname(path.dirname(process.execPath));
}
var npmGlobalModuleDir = path.resolve(npmGlobalPrefix, 'lib', 'node_modules');
// Save OS-specific path separator
var sep = path.sep;
// Resolver
module.exports = function resolve(dirname) {
// Check for environmental variable
if (process.env.APP_ROOT_PATH) {
return path.resolve(process.env.APP_ROOT_PATH);
}
// Defer to main process in electron renderer
if ('undefined' !== typeof window && window.process && 'renderer' === window.process.type) {
var electron = 'electron';
var remote = require(electron).remote;
return remote.require('app-root-path').path;
}
// Defer to AWS Lambda when executing there
if (process.env.LAMBDA_TASK_ROOT && process.env.AWS_EXECUTION_ENV) {
return process.env.LAMBDA_TASK_ROOT;
}
var resolved = path.resolve(dirname);
var alternateMethod = false;
var appRootPath = null;
// Make sure that we're not loaded from a global include path
// Eg. $HOME/.node_modules
// $HOME/.node_libraries
// $PREFIX/lib/node
globalPaths.forEach(function(globalPath) {
if (!alternateMethod && 0 === resolved.indexOf(globalPath)) {
alternateMethod = true;
}
});
// If the app-root-path library isn't loaded globally,
// and node_modules exists in the path, just split __dirname
var nodeModulesDir = sep + 'node_modules';
if (!alternateMethod && -1 !== resolved.indexOf(nodeModulesDir)) {
var parts = resolved.split(nodeModulesDir);
if (parts.length) {
appRootPath = parts[0];
parts = null;
}
}
// If the above didn't work, or this module is loaded globally, then
// resort to require.main.filename (See http://nodejs.org/api/modules.html)
if (alternateMethod || null == appRootPath) {
appRootPath = path.dirname(require.main.filename);
}
// Handle global bin/ directory edge-case
if (alternateMethod && -1 !== appRootPath.indexOf(npmGlobalModuleDir) && (appRootPath.length - 4) === appRootPath.indexOf(sep + 'bin')) {
appRootPath = appRootPath.slice(0, -4);
}
// Return
return appRootPath;
};
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