node_modules

1 files changed, 48 insertions, 0 deletions

diff --git a/node_modules/enhanced-resolve/lib/MainFieldPlugin.js b/node_modules/enhanced-resolve/lib/MainFieldPlugin.js
new file mode 100644
index 000000000..45ecd4b23
--- /dev/null
+++ b/node_modules/enhanced-resolve/lib/MainFieldPlugin.js
@@ -0,0 +1,48 @@
+/*

+	MIT License http://www.opensource.org/licenses/mit-license.php

+	Author Tobias Koppers @sokra

+*/

+var path = require("path");

+

+function MainFieldPlugin(source, options, target) {

+	this.source = source;

+	this.options = options;

+	this.target = target;

+}

+module.exports = MainFieldPlugin;

+

+MainFieldPlugin.prototype.apply = function(resolver) {

+	var target = this.target;

+	var options = this.options;

+	resolver.plugin(this.source, function mainField(request, callback) {

+		if(request.path !== request.descriptionFileRoot) return callback();

+		var content = request.descriptionFileData;

+		var filename = path.basename(request.descriptionFilePath);

+		var mainModule;

+		var field = options.name;

+		if(Array.isArray(field)) {

+			var current = content;

+			for(var j = 0; j < field.length; j++) {

+				if(current === null || typeof current !== "object") {

+					current = null;

+					break;

+				}

+				current = current[field[j]];

+			}

+			if(typeof current === "string") {

+				mainModule = current;

+			}

+		} else {

+			if(typeof content[field] === "string") {

+				mainModule = content[field];

+			}

+		}

+		if(!mainModule) return callback();

+		if(options.forceRelative && !/^\.\.?\//.test(mainModule))

+			mainModule = "./" + mainModule;

+		var obj = Object.assign({}, request, {

+			request: mainModule

+		});

+		return resolver.doResolve(target, obj, "use " + mainModule + " from " + options.name + " in " + filename, callback);

+	});

+};