Merge from vscode a234f13c45b40a0929777cb440ee011b7549eed2 (#8911)

* Merge from vscode a234f13c45b40a0929777cb440ee011b7549eed2

* update distro

* fix layering

* update distro

* fix tests

build/lib/eslint/code-layering.js

@@ -0,0 +1,68 @@
+"use strict";
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+const path_1 = require("path");
+const utils_1 = require("./utils");
+module.exports = new class {
+    constructor() {
+        this.meta = {
+            messages: {
+                layerbreaker: 'Bad layering. You are not allowed to access {{from}} from here, allowed layers are: [{{allowed}}]'
+            },
+            docs: {
+                url: 'https://github.com/microsoft/vscode/wiki/Source-Code-Organization'
+            }
+        };
+    }
+    create(context) {
+        const fileDirname = path_1.dirname(context.getFilename());
+        const parts = fileDirname.split(/\\|\//);
+        const ruleArgs = context.options[0];
+        let config;
+        for (let i = parts.length - 1; i >= 0; i--) {
+            if (ruleArgs[parts[i]]) {
+                config = {
+                    allowed: new Set(ruleArgs[parts[i]]).add(parts[i]),
+                    disallowed: new Set()
+                };
+                Object.keys(ruleArgs).forEach(key => {
+                    if (!config.allowed.has(key)) {
+                        config.disallowed.add(key);
+                    }
+                });
+                break;
+            }
+        }
+        if (!config) {
+            // nothing
+            return {};
+        }
+        return utils_1.createImportRuleListener((node, path) => {
+            if (path[0] === '.') {
+                path = path_1.join(path_1.dirname(context.getFilename()), path);
+            }
+            const parts = path_1.dirname(path).split(/\\|\//);
+            for (let i = parts.length - 1; i >= 0; i--) {
+                const part = parts[i];
+                if (config.allowed.has(part)) {
+                    // GOOD - same layer
+                    break;
+                }
+                if (config.disallowed.has(part)) {
+                    // BAD - wrong layer
+                    context.report({
+                        loc: node.loc,
+                        messageId: 'layerbreaker',
+                        data: {
+                            from: part,
+                            allowed: [...config.allowed.keys()].join(', ')
+                        }
+                    });
+                    break;
+                }
+            }
+        });
+    }
+};