51 lines
1.9 KiB
JavaScript
51 lines
1.9 KiB
JavaScript
var utils = require('./utils');
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var scopedModuleRegex = new RegExp('@[a-zA-Z0-9][\\w-.]+\/[a-zA-Z0-9][\\w-.]+([a-zA-Z0-9.\/]+)?', 'g');
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function getModuleName(request, includeAbsolutePaths) {
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var req = request;
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var delimiter = '/';
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if (includeAbsolutePaths) {
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req = req.replace(/^.*?\/node_modules\//, '');
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}
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// check if scoped module
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if (scopedModuleRegex.test(req)) {
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// reset regexp
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scopedModuleRegex.lastIndex = 0;
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return req.split(delimiter, 2).join(delimiter);
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}
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return req.split(delimiter)[0];
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}
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module.exports = function nodeExternals(options) {
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options = options || {};
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var whitelist = [].concat(options.whitelist || []);
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var binaryDirs = [].concat(options.binaryDirs || ['.bin']);
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var importType = options.importType || 'commonjs';
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var modulesDir = options.modulesDir || 'node_modules';
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var modulesFromFile = !!options.modulesFromFile;
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var includeAbsolutePaths = !!options.includeAbsolutePaths;
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// helper function
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function isNotBinary(x) {
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return !utils.contains(binaryDirs, x);
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}
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// create the node modules list
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var nodeModules = modulesFromFile ? utils.readFromPackageJson(options.modulesFromFile) : utils.readDir(modulesDir).filter(isNotBinary);
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// return an externals function
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return function(context, request, callback){
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var moduleName = getModuleName(request, includeAbsolutePaths);
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if (utils.contains(nodeModules, moduleName) && !utils.containsPattern(whitelist, request)) {
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if (typeof importType === 'function') {
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return callback(null, importType(request));
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}
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// mark this module as external
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// https://webpack.js.org/configuration/externals/
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return callback(null, importType + " " + request);
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};
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callback();
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}
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}; |