feat: add TsconfigPathsPlugin

.cspell.json

@@ -34,7 +34,12 @@
     "zipp",
     "zippi",
     "zizizi",
-    "codecov"
+    "codecov",
+    "xiaoxiaojx",
+    "Natsu",
+    "tsconfigs",
+    "preact",
+    "compat"
   ],
   "ignorePaths": ["package.json", "yarn.lock", "coverage", "*.log"]
 }

README.md

@@ -111,6 +111,7 @@ myResolver.resolve(
 | restrictions     | []                          | A list of resolve restrictions                                                                                                                            |
 | roots            | []                          | A list of root paths                                                                                                                                      |
 | symlinks         | true                        | Whether to resolve symlinks to their symlinked location                                                                                                   |
+| tsconfig         | true                        | Path to tsconfig.json for paths mapping. Default true loads tsconfig.json, or pass a string path.                                                         |
 | unsafeCache      | false                       | Use this cache object to unsafely cache the successful requests                                                                                           |
 
 ## Plugins

lib/AliasPlugin.js

@@ -5,15 +5,13 @@
 
 "use strict";
 
-const forEachBail = require("./forEachBail");
-const { PathType, getType } = require("./util/path");
-
 /** @typedef {import("./Resolver")} Resolver */
-/** @typedef {import("./Resolver").ResolveRequest} ResolveRequest */
 /** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */
 /** @typedef {string | Array<string> | false} Alias */
 /** @typedef {{alias: Alias, name: string, onlyModule?: boolean}} AliasOption */
 
+const { aliasResolveHandler } = require("./AliasUtils");
+
 module.exports = class AliasPlugin {
 	/**
 	 * @param {string | ResolveStepHook} source source
@@ -32,143 +30,16 @@ module.exports = class AliasPlugin {
 	 */
 	apply(resolver) {
 		const target = resolver.ensureHook(this.target);
-		/**
-		 * @param {string} maybeAbsolutePath path
-		 * @returns {null|string} absolute path with slash ending
-		 */
-		const getAbsolutePathWithSlashEnding = (maybeAbsolutePath) => {
-			const type = getType(maybeAbsolutePath);
-			if (type === PathType.AbsolutePosix || type === PathType.AbsoluteWin) {
-				return resolver.join(maybeAbsolutePath, "_").slice(0, -1);
-			}
-			return null;
-		};
-		/**
-		 * @param {string} path path
-		 * @param {string} maybeSubPath sub path
-		 * @returns {boolean} true, if path is sub path
-		 */
-		const isSubPath = (path, maybeSubPath) => {
-			const absolutePath = getAbsolutePathWithSlashEnding(maybeSubPath);
-			if (!absolutePath) return false;
-			return path.startsWith(absolutePath);
-		};
+
 		resolver
 			.getHook(this.source)
 			.tapAsync("AliasPlugin", (request, resolveContext, callback) => {
-				const innerRequest = request.request || request.path;
-				if (!innerRequest) return callback();
-
-				forEachBail(
+				aliasResolveHandler(
+					resolver,
 					this.options,
-					(item, callback) => {
-						/** @type {boolean} */
-						let shouldStop = false;
-
-						const matchRequest =
-							innerRequest === item.name ||
-							(!item.onlyModule &&
-								(request.request
-									? innerRequest.startsWith(`${item.name}/`)
-									: isSubPath(innerRequest, item.name)));
-
-						const splitName = item.name.split("*");
-						const matchWildcard = !item.onlyModule && splitName.length === 2;
-
-						if (matchRequest || matchWildcard) {
-							/**
-							 * @param {Alias} alias alias
-							 * @param {(err?: null|Error, result?: null|ResolveRequest) => void} callback callback
-							 * @returns {void}
-							 */
-							const resolveWithAlias = (alias, callback) => {
-								if (alias === false) {
-									/** @type {ResolveRequest} */
-									const ignoreObj = {
-										...request,
-										path: false,
-									};
-									if (typeof resolveContext.yield === "function") {
-										resolveContext.yield(ignoreObj);
-										return callback(null, null);
-									}
-									return callback(null, ignoreObj);
-								}
-
-								let newRequestStr;
-
-								const [prefix, suffix] = splitName;
-								if (
-									matchWildcard &&
-									innerRequest.startsWith(prefix) &&
-									innerRequest.endsWith(suffix)
-								) {
-									const match = innerRequest.slice(
-										prefix.length,
-										innerRequest.length - suffix.length,
-									);
-									newRequestStr = alias.toString().replace("*", match);
-								}
-
-								if (
-									matchRequest &&
-									innerRequest !== alias &&
-									!innerRequest.startsWith(`${alias}/`)
-								) {
-									/** @type {string} */
-									const remainingRequest = innerRequest.slice(item.name.length);
-									newRequestStr = alias + remainingRequest;
-								}
-
-								if (newRequestStr !== undefined) {
-									shouldStop = true;
-									/** @type {ResolveRequest} */
-									const obj = {
-										...request,
-										request: newRequestStr,
-										fullySpecified: false,
-									};
-									return resolver.doResolve(
-										target,
-										obj,
-										`aliased with mapping '${item.name}': '${alias}' to '${newRequestStr}'`,
-										resolveContext,
-										(err, result) => {
-											if (err) return callback(err);
-											if (result) return callback(null, result);
-											return callback();
-										},
-									);
-								}
-								return callback();
-							};
-
-							/**
-							 * @param {(null | Error)=} err error
-							 * @param {(null | ResolveRequest)=} result result
-							 * @returns {void}
-							 */
-							const stoppingCallback = (err, result) => {
-								if (err) return callback(err);
-
-								if (result) return callback(null, result);
-								// Don't allow other aliasing or raw request
-								if (shouldStop) return callback(null, null);
-								return callback();
-							};
-
-							if (Array.isArray(item.alias)) {
-								return forEachBail(
-									item.alias,
-									resolveWithAlias,
-									stoppingCallback,
-								);
-							}
-							return resolveWithAlias(item.alias, stoppingCallback);
-						}
-
-						return callback();
-					},
+					target,
+					request,
+					resolveContext,
 					callback,
 				);
 			});

lib/AliasUtils.js

@@ -0,0 +1,172 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const forEachBail = require("./forEachBail");
+const { PathType, getType } = require("./util/path");
+
+/** @typedef {import("./Resolver")} Resolver */
+/** @typedef {import("./Resolver").ResolveRequest} ResolveRequest */
+/** @typedef {import("./Resolver").ResolveContext} ResolveContext */
+/** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */
+/** @typedef {import("./Resolver").ResolveCallback} ResolveCallback */
+/** @typedef {string | Array<string> | false} Alias */
+/** @typedef {{alias: Alias, name: string, onlyModule?: boolean}} AliasOption */
+
+/** @typedef {(err?: null | Error, result?: null | ResolveRequest) => void} InnerCallback */
+/**
+ * @param {Resolver} resolver resolver
+ * @param {Array<AliasOption>} options options
+ * @param {ResolveStepHook} target target
+ * @param {ResolveRequest} request request
+ * @param {ResolveContext} resolveContext resolve context
+ * @param {InnerCallback} callback callback
+ * @returns {void}
+ */
+function aliasResolveHandler(
+	resolver,
+	options,
+	target,
+	request,
+	resolveContext,
+	callback,
+) {
+	const innerRequest = request.request || request.path;
+	if (!innerRequest) return callback();
+
+	/**
+	 * @param {string} maybeAbsolutePath path
+	 * @returns {null|string} absolute path with slash ending
+	 */
+	const getAbsolutePathWithSlashEnding = (maybeAbsolutePath) => {
+		const type = getType(maybeAbsolutePath);
+		if (type === PathType.AbsolutePosix || type === PathType.AbsoluteWin) {
+			return resolver.join(maybeAbsolutePath, "_").slice(0, -1);
+		}
+		return null;
+	};
+	/**
+	 * @param {string} path path
+	 * @param {string} maybeSubPath sub path
+	 * @returns {boolean} true, if path is sub path
+	 */
+	const isSubPath = (path, maybeSubPath) => {
+		const absolutePath = getAbsolutePathWithSlashEnding(maybeSubPath);
+		if (!absolutePath) return false;
+		return path.startsWith(absolutePath);
+	};
+
+	forEachBail(
+		options,
+		(item, callback) => {
+			/** @type {boolean} */
+			let shouldStop = false;
+
+			const matchRequest =
+				innerRequest === item.name ||
+				(!item.onlyModule &&
+					(request.request
+						? innerRequest.startsWith(`${item.name}/`)
+						: isSubPath(innerRequest, item.name)));
+
+			const splitName = item.name.split("*");
+			const matchWildcard = !item.onlyModule && splitName.length === 2;
+
+			if (matchRequest || matchWildcard) {
+				/**
+				 * @param {Alias} alias alias
+				 * @param {(err?: null|Error, result?: null|ResolveRequest) => void} callback callback
+				 * @returns {void}
+				 */
+				const resolveWithAlias = (alias, callback) => {
+					if (alias === false) {
+						/** @type {ResolveRequest} */
+						const ignoreObj = {
+							...request,
+							path: false,
+						};
+						if (typeof resolveContext.yield === "function") {
+							resolveContext.yield(ignoreObj);
+							return callback(null, null);
+						}
+						return callback(null, ignoreObj);
+					}
+
+					let newRequestStr;
+
+					const [prefix, suffix] = splitName;
+					if (
+						matchWildcard &&
+						innerRequest.startsWith(prefix) &&
+						innerRequest.endsWith(suffix)
+					) {
+						const match = innerRequest.slice(
+							prefix.length,
+							innerRequest.length - suffix.length,
+						);
+						newRequestStr = alias.toString().replace("*", match);
+					}
+
+					if (
+						matchRequest &&
+						innerRequest !== alias &&
+						!innerRequest.startsWith(`${alias}/`)
+					) {
+						/** @type {string} */
+						const remainingRequest = innerRequest.slice(item.name.length);
+						newRequestStr = alias + remainingRequest;
+					}
+
+					if (newRequestStr !== undefined) {
+						shouldStop = true;
+						/** @type {ResolveRequest} */
+						const obj = {
+							...request,
+							request: newRequestStr,
+							fullySpecified: false,
+						};
+						return resolver.doResolve(
+							target,
+							obj,
+							`aliased with mapping '${item.name}': '${alias}' to '${newRequestStr}'`,
+							resolveContext,
+							(err, result) => {
+								if (err) return callback(err);
+								if (result) return callback(null, result);
+								return callback();
+							},
+						);
+					}
+					return callback();
+				};
+
+				/**
+				 * @param {(null | Error)=} err error
+				 * @param {(null | ResolveRequest)=} result result
+				 * @returns {void}
+				 */
+				const stoppingCallback = (err, result) => {
+					if (err) return callback(err);
+
+					if (result) return callback(null, result);
+					// Don't allow other aliasing or raw request
+					if (shouldStop) return callback(null, null);
+					return callback();
+				};
+
+				if (Array.isArray(item.alias)) {
+					return forEachBail(item.alias, resolveWithAlias, stoppingCallback);
+				}
+				return resolveWithAlias(item.alias, stoppingCallback);
+			}
+
+			return callback();
+		},
+		callback,
+	);
+}
+
+module.exports.aliasResolveHandler = aliasResolveHandler;