1 files changed, 189 insertions, 0 deletions
diff --git a/node_modules/enhanced-resolve/lib/concord.js b/node_modules/enhanced-resolve/lib/concord.js
new file mode 100644
index 000000000..c8db37940
--- /dev/null
+++ b/node_modules/enhanced-resolve/lib/concord.js
@@ -0,0 +1,189 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+var globToRegExp = require("./globToRegExp").globToRegExp;
+
+function parseType(type) {
+	var items = type.split("+");
+	var t = items.shift();
+	return {
+		type: t === "*" ? null : t,
+		features: items
+	};
+}
+
+function isTypeMatched(baseType, testedType) {
+	if(typeof baseType === "string") baseType = parseType(baseType);
+	if(typeof testedType === "string") testedType = parseType(testedType);
+	if(testedType.type && testedType.type !== baseType.type) return false;
+	return testedType.features.every(function(requiredFeature) {
+		return baseType.features.indexOf(requiredFeature) >= 0;
+	});
+}
+
+function isResourceTypeMatched(baseType, testedType) {
+	baseType = baseType.split("/");
+	testedType = testedType.split("/");
+	if(baseType.length !== testedType.length) return false;
+	for(var i = 0; i < baseType.length; i++) {
+		if(!isTypeMatched(baseType[i], testedType[i]))
+			return false;
+	}
+	return true;
+}
+
+function isResourceTypeSupported(context, type) {
+	return context.supportedResourceTypes && context.supportedResourceTypes.some(function(supportedType) {
+		return isResourceTypeMatched(supportedType, type);
+	});
+}
+
+function isEnvironment(context, env) {
+	return context.environments && context.environments.every(function(environment) {
+		return isTypeMatched(environment, env);
+	});
+}
+
+var globCache = {};
+
+function getGlobRegExp(glob) {
+	var regExp = globCache[glob] || (globCache[glob] = globToRegExp(glob));
+	return regExp;
+}
+
+function matchGlob(glob, relativePath) {
+	var regExp = getGlobRegExp(glob);
+	return regExp.exec(relativePath);
+}
+
+function isGlobMatched(glob, relativePath) {
+	return !!matchGlob(glob, relativePath);
+}
+
+function isConditionMatched(context, condition) {
+	var items = condition.split("|");
+	return items.some(function testFn(item) {
+		item = item.trim();
+		var inverted = /^!/.test(item);
+		if(inverted) return !testFn(item.substr(1));
+		if(/^[a-z]+:/.test(item)) {
+			// match named condition
+			var match = /^([a-z]+):\s*/.exec(item);
+			var value = item.substr(match[0].length);
+			var name = match[1];
+			switch(name) {
+				case "referrer":
+					return isGlobMatched(value, context.referrer);
+				default:
+					return false;
+			}
+		} else if(item.indexOf("/") >= 0) {
+			// match supported type
+			return isResourceTypeSupported(context, item);
+		} else {
+			// match environment
+			return isEnvironment(context, item);
+		}
+	});
+}
+
+function isKeyMatched(context, key) {
+	while(true) { //eslint-disable-line
+		var match = /^\[([^\]]+)\]\s*/.exec(key);
+		if(!match) return key;
+		key = key.substr(match[0].length);
+		var condition = match[1];
+		if(!isConditionMatched(context, condition)) {
+			return false;
+		}
+	}
+}
+
+function getField(context, configuration, field) {
+	var value;
+	Object.keys(configuration).forEach(function(key) {
+		var pureKey = isKeyMatched(context, key);
+		if(pureKey === field) {
+			value = configuration[key];
+		}
+	});
+	return value;
+}
+
+function getMain(context, configuration) {
+	return getField(context, configuration, "main");
+}
+
+function getExtensions(context, configuration) {
+	return getField(context, configuration, "extensions");
+}
+
+function matchModule(context, configuration, request) {
+	var modulesField = getField(context, configuration, "modules");
+	if(!modulesField) return request;
+	var newRequest = request;
+	var keys = Object.keys(modulesField);
+	var iteration = 0;
+	for(var i = 0; i < keys.length; i++) {
+		var key = keys[i];
+		var pureKey = isKeyMatched(context, key);
+		var match = matchGlob(pureKey, newRequest);
+		if(match) {
+			var value = modulesField[key];
+			if(typeof value !== "string") {
+				return value;
+			} else if(/^\(.+\)$/.test(pureKey)) {
+				newRequest = newRequest.replace(getGlobRegExp(pureKey), value);
+			} else {
+				var index = 1;
+				newRequest = value.replace(/(\/?\*)?\*/g, replaceMatcher);
+			}
+			i = -1;
+			if(iteration++ > keys.length) {
+				throw new Error("Request '" + request + "' matches recursively");
+			}
+		}
+	}
+	return newRequest;
+
+	function replaceMatcher(find) {
+		switch(find) {
+			case "/**":
+				var m = match[index++];
+				return m ? "/" + m : "";
+			case "**":
+			case "*":
+				return match[index++];
+		}
+	}
+}
+
+function matchType(context, configuration, relativePath) {
+	var typesField = getField(context, configuration, "types");
+	if(!typesField) return undefined;
+	var type;
+	Object.keys(typesField).forEach(function(key) {
+		var pureKey = isKeyMatched(context, key);
+		if(isGlobMatched(pureKey, relativePath)) {
+			var value = typesField[key];
+			if(!type && /\/\*$/.test(value))
+				throw new Error("value ('" + value + "') of key '" + key + "' contains '*', but there is no previous value defined");
+			type = value.replace(/\/\*$/, "/" + type);
+		}
+	});
+	return type;
+}
+
+exports.parseType = parseType;
+exports.isTypeMatched = isTypeMatched;
+exports.isResourceTypeSupported = isResourceTypeSupported;
+exports.isEnvironment = isEnvironment;
+exports.isGlobMatched = isGlobMatched;
+exports.isConditionMatched = isConditionMatched;
+exports.isKeyMatched = isKeyMatched;
+exports.getField = getField;
+exports.getMain = getMain;
+exports.getExtensions = getExtensions;
+exports.matchModule = matchModule;
+exports.matchType = matchType;