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node_modules/webpack/lib/dependencies/ContextDependencyHelpers.js

@@ -9,63 +9,224 @@ const ContextDependencyHelpers = exports;
 /**
  * Escapes regular expression metacharacters
  * @param {string} str String to quote
- * @return {string} Escaped string
+ * @returns {string} Escaped string
  */
-function quotemeta(str) {
+const 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)}$`);
-		dep = new Dep(context, options.wrappedContextRecursive, regExp, range, valueRange, chunkName);
+const splitContextFromPrefix = prefix => {
+	const idx = prefix.lastIndexOf("/");
+	let context = ".";
+	if (idx >= 0) {
+		context = prefix.substr(0, idx);
+		prefix = `.${prefix.substr(idx)}`;
+	}
+	return {
+		context,
+		prefix
+	};
+};
+
+const splitQueryFromPostfix = postfix => {
+	const idx = postfix.indexOf("?");
+	let query = "";
+	if (idx >= 0) {
+		query = postfix.substr(idx);
+		postfix = postfix.substr(0, idx);
+	}
+	return {
+		postfix,
+		query
+	};
+};
+
+ContextDependencyHelpers.create = (
+	Dep,
+	range,
+	param,
+	expr,
+	options,
+	contextOptions,
+	// when parser is not passed in, expressions won't be walked
+	parser = null
+) => {
+	if (param.isTemplateString()) {
+		let prefixRaw = param.quasis[0].string;
+		let postfixRaw =
+			param.quasis.length > 1
+				? param.quasis[param.quasis.length - 1].string
+				: "";
+
+		const valueRange = param.range;
+		const { context, prefix } = splitContextFromPrefix(prefixRaw);
+		const { postfix, query } = splitQueryFromPostfix(postfixRaw);
+
+		// When there are more than two quasis, the generated RegExp can be more precise
+		// We join the quasis with the expression regexp
+		const innerQuasis = param.quasis.slice(1, param.quasis.length - 1);
+		const innerRegExp =
+			options.wrappedContextRegExp.source +
+			innerQuasis
+				.map(q => quotemeta(q.string) + options.wrappedContextRegExp.source)
+				.join("");
+
+		// Example: `./context/pre${e}inner${e}inner2${e}post?query`
+		// context: "./context"
+		// prefix: "./pre"
+		// innerQuasis: [BEE("inner"), BEE("inner2")]
+		// (BEE = BasicEvaluatedExpression)
+		// postfix: "post"
+		// query: "?query"
+		// regExp: /^\.\/pre.*inner.*inner2.*post$/
+		const regExp = new RegExp(
+			`^${quotemeta(prefix)}${innerRegExp}${quotemeta(postfix)}$`
+		);
+		const dep = new Dep(
+			Object.assign(
+				{
+					request: context + query,
+					recursive: options.wrappedContextRecursive,
+					regExp,
+					mode: "sync"
+				},
+				contextOptions
+			),
+			range,
+			valueRange
+		);
 		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";
+		const replaces = [];
+
+		param.parts.forEach((part, i) => {
+			if (i % 2 === 0) {
+				// Quasis or merged quasi
+				let range = part.range;
+				let value = part.string;
+				if (param.templateStringKind === "cooked") {
+					value = JSON.stringify(value);
+					value = value.slice(1, value.length - 1);
+				}
+				if (i === 0) {
+					// prefix
+					value = prefix;
+					range = [param.range[0], part.range[1]];
+					value =
+						(param.templateStringKind === "cooked" ? "`" : "String.raw`") +
+						value;
+				} else if (i === param.parts.length - 1) {
+					// postfix
+					value = postfix;
+					range = [part.range[0], param.range[1]];
+					value = value + "`";
+				} else if (
+					part.expression &&
+					part.expression.type === "TemplateElement" &&
+					part.expression.value.raw === value
+				) {
+					// Shortcut when it's a single quasi and doesn't need to be replaced
+					return;
+				}
+				replaces.push({
+					range,
+					value
+				});
+			} else {
+				// Expression
+				if (parser) {
+					parser.walkExpression(part.expression);
+				}
+			}
+		});
+
+		dep.replaces = replaces;
+		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)}$`);
-		dep = new Dep(context, options.wrappedContextRecursive, regExp, range, valueRange, chunkName);
+	} else if (
+		param.isWrapped() &&
+		((param.prefix && param.prefix.isString()) ||
+			(param.postfix && param.postfix.isString()))
+	) {
+		let prefixRaw =
+			param.prefix && param.prefix.isString() ? param.prefix.string : "";
+		let postfixRaw =
+			param.postfix && param.postfix.isString() ? param.postfix.string : "";
+		const prefixRange =
+			param.prefix && param.prefix.isString() ? param.prefix.range : null;
+		const postfixRange =
+			param.postfix && param.postfix.isString() ? param.postfix.range : null;
+		const valueRange = param.range;
+		const { context, prefix } = splitContextFromPrefix(prefixRaw);
+		const { postfix, query } = splitQueryFromPostfix(postfixRaw);
+		const regExp = new RegExp(
+			`^${quotemeta(prefix)}${options.wrappedContextRegExp.source}${quotemeta(
+				postfix
+			)}$`
+		);
+		const dep = new Dep(
+			Object.assign(
+				{
+					request: context + query,
+					recursive: options.wrappedContextRecursive,
+					regExp,
+					mode: "sync"
+				},
+				contextOptions
+			),
+			range,
+			valueRange
+		);
 		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";
+		const replaces = [];
+		if (prefixRange) {
+			replaces.push({
+				range: prefixRange,
+				value: JSON.stringify(prefix)
+			});
+		}
+		if (postfixRange) {
+			replaces.push({
+				range: postfixRange,
+				value: JSON.stringify(postfix)
+			});
+		}
+		dep.replaces = replaces;
+		dep.critical =
+			options.wrappedContextCritical &&
+			"a part of the request of a dependency is an expression";
+
+		if (parser && param.wrappedInnerExpressions) {
+			for (const part of param.wrappedInnerExpressions) {
+				if (part.expression) parser.walkExpression(part.expression);
+			}
+		}
+
 		return dep;
 	} else {
-		dep = new Dep(options.exprContextRequest, options.exprContextRecursive, options.exprContextRegExp, range, param.range, chunkName);
+		const dep = new Dep(
+			Object.assign(
+				{
+					request: options.exprContextRequest,
+					recursive: options.exprContextRecursive,
+					regExp: options.exprContextRegExp,
+					mode: "sync"
+				},
+				contextOptions
+			),
+			range,
+			param.range
+		);
 		dep.loc = expr.loc;
-		dep.critical = options.exprContextCritical && "the request of a dependency is an expression";
+		dep.critical =
+			options.exprContextCritical &&
+			"the request of a dependency is an expression";
+
+		if (parser) {
+			parser.walkExpression(param.expression);
+		}
+
 		return dep;
 	}
 };