load description file after resolving with exports or imports field

fixes webpack/webpack#11750

Author: sokra

lib/ResolverFactory.js

@@ -377,7 +377,7 @@ exports.createResolver = function (options) {
 				"internal",
 				conditionNames,
 				importsField,
-				"described-relative",
+				"relative",
 				"internal-resolve"
 			)
 		);
@@ -444,7 +444,7 @@ exports.createResolver = function (options) {
 				"resolve-in-package",
 				conditionNames,
 				exportsField,
-				"described-relative"
+				"relative"
 			)
 		);
 	});

test/exportsField.js

@@ -1767,10 +1767,12 @@ describe("ExportsFieldPlugin", () => {
 						"        existing directory .../node_modules/exports-field",
 						"          using description file: .../node_modules/exports-field/package.json (relative path: .)",
 						"            using exports field: ./lib/lib2/browser.js",
-						"              .../node_modules/exports-field/lib/lib2/browser.js doesn't exist",
+						"              using description file: .../node_modules/exports-field/package.json (relative path: ./lib/lib2/browser.js)",
+						"                .../node_modules/exports-field/lib/lib2/browser.js doesn't exist",
 						"            using exports field: ./lib/browser.js",
-						"              existing file: .../node_modules/exports-field/lib/browser.js",
-						"                reporting result .../node_modules/exports-field/lib/browser.js"
+						"              using description file: .../node_modules/exports-field/package.json (relative path: ./lib/browser.js)",
+						"                existing file: .../node_modules/exports-field/lib/browser.js",
+						"                  reporting result .../node_modules/exports-field/lib/browser.js"
 					]);
 				done();
 			}

test/importsField.js

@@ -1325,16 +1325,18 @@ describe("ImportsFieldPlugin", () => {
 						"              existing directory .../node_modules/a",
 						"                using description file: .../node_modules/a/package.json (relative path: .)",
 						"                  using exports field: ./lib/lib2/index.js",
-						"                    no extension",
-						"                      .../node_modules/a/lib/lib2/index.js doesn't exist",
-						"                    .js",
-						"                      .../node_modules/a/lib/lib2/index.js.js doesn't exist",
-						"                    as directory",
-						"                      .../node_modules/a/lib/lib2/index.js doesn't exist",
+						"                    using description file: .../node_modules/a/package.json (relative path: ./lib/lib2/index.js)",
+						"                      no extension",
+						"                        .../node_modules/a/lib/lib2/index.js doesn't exist",
+						"                      .js",
+						"                        .../node_modules/a/lib/lib2/index.js.js doesn't exist",
+						"                      as directory",
+						"                        .../node_modules/a/lib/lib2/index.js doesn't exist",
 						"                  using exports field: ./lib/index.js",
-						"                    no extension",
-						"                      existing file: .../node_modules/a/lib/index.js",
-						"                        reporting result .../node_modules/a/lib/index.js"
+						"                    using description file: .../node_modules/a/package.json (relative path: ./lib/index.js)",
+						"                      no extension",
+						"                        existing file: .../node_modules/a/lib/index.js",
+						"                          reporting result .../node_modules/a/lib/index.js"
 					]);
 				done();
 			}