1 files changed, 71 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/dependencies/ContextDependencyHelpers.js b/node_modules/webpack/lib/dependencies/ContextDependencyHelpers.js
new file mode 100644
index 000000000..412cee701
--- /dev/null
+++ b/node_modules/webpack/lib/dependencies/ContextDependencyHelpers.js
@@ -0,0 +1,71 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const ContextDependencyHelpers = exports;
+
+/**
+ * Escapes regular expression metacharacters
+ * @param {string} str String to quote
+ * @return {string} Escaped string
+ */
+function quotemeta(str) {
+	return str.replace(/[-[\]\\/{}()*+?.^$|]/g, "\\$&");
+}
+
+ContextDependencyHelpers.create = function(Dep, range, param, expr, options, chunkName) {
+	let dep;
+	let prefix;
+	let postfix;
+	let prefixRange;
+	let valueRange;
+	let idx;
+	let context;
+	let regExp;
+	if(param.isTemplateString()) {
+		prefix = param.quasis[0].string;
+		postfix = param.quasis.length > 1 ? param.quasis[param.quasis.length - 1].string : "";
+		prefixRange = [param.quasis[0].range[0], param.quasis[0].range[1]];
+		valueRange = param.range;
+		idx = prefix.lastIndexOf("/");
+		context = ".";
+		if(idx >= 0) {
+			context = prefix.substr(0, idx);
+			prefix = `.${prefix.substr(idx)}`;
+		}
+		// If there are more than two quasis, maybe the generated RegExp can be more precise?
+		regExp = new RegExp(`^${quotemeta(prefix)}${options.wrappedContextRegExp.source}${quotemeta(postfix)}$`);
+		dep = new Dep(context, options.wrappedContextRecursive, regExp, range, valueRange, chunkName);
+		dep.loc = expr.loc;
+		dep.replaces = [{
+			range: prefixRange,
+			value: prefix
+		}];
+		dep.critical = options.wrappedContextCritical && "a part of the request of a dependency is an expression";
+		return dep;
+	} else if(param.isWrapped() && (param.prefix && param.prefix.isString() || param.postfix && param.postfix.isString())) {
+		prefix = param.prefix && param.prefix.isString() ? param.prefix.string : "";
+		postfix = param.postfix && param.postfix.isString() ? param.postfix.string : "";
+		prefixRange = param.prefix && param.prefix.isString() ? param.prefix.range : null;
+		valueRange = [prefixRange ? prefixRange[1] : param.range[0], param.range[1]];
+		idx = prefix.lastIndexOf("/");
+		context = ".";
+		if(idx >= 0) {
+			context = prefix.substr(0, idx);
+			prefix = `.${prefix.substr(idx)}`;
+		}
+		regExp = new RegExp(`^${quotemeta(prefix)}${options.wrappedContextRegExp.source}${quotemeta(postfix)}$`);
+		dep = new Dep(context, options.wrappedContextRecursive, regExp, range, valueRange, chunkName);
+		dep.loc = expr.loc;
+		dep.prepend = param.prefix && param.prefix.isString() ? prefix : null;
+		dep.critical = options.wrappedContextCritical && "a part of the request of a dependency is an expression";
+		return dep;
+	} else {
+		dep = new Dep(options.exprContextRequest, options.exprContextRecursive, options.exprContextRegExp, range, param.range, chunkName);
+		dep.loc = expr.loc;
+		dep.critical = options.exprContextCritical && "the request of a dependency is an expression";
+		return dep;
+	}
+};