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