[DO NOT MERGE] rework eslint config to use proper TS projects

.eslintignore

@@ -5,3 +5,4 @@ coverage/
 **/*.d.ts
 /docs/_preview
 /docs/_loopback.io
+**/.eslintrc.js

.eslintrc.js

@@ -3,6 +3,20 @@
 // This file is licensed under the MIT License.
 // License text available at https://opensource.org/licenses/MIT
 
+const {packages} = require('./lerna.json');
+const projects = packages
+  .filter(spec => spec !== 'docs')
+  .map(spec => `${spec}/tsconfig.json`);
+
 module.exports = {
+  root: true,
   extends: ['./packages/eslint-config/eslintrc.js'],
+  parserOptions: {
+    project: [
+      'tsconfig.eslint.json',
+      ...projects,
+      'packages/tsdocs/fixtures/monorepo/packages/*/tsconfig.json',
+    ],
+    tsconfigRootDir: __dirname,
+  },
 };

.travis.yml

@@ -43,7 +43,6 @@ jobs:
       # is not able to access type information for dependencies
       script:
         - lerna bootstrap
-        - npm run build
         - npm run lint
 
     - node_js: "12"

packages/eslint-config/eslintrc.js

@@ -29,8 +29,6 @@ module.exports = {
      * See https://github.com/typescript-eslint/typescript-eslint/issues/389
      */
     project: getProjectFile(),
-    // See https://github.com/typescript-eslint/typescript-eslint/tree/master/packages/parser#configuration
-    createDefaultProgram: true,
     ecmaFeatures: {
       ecmaVersion: 2017,
       jsx: false,

tsconfig.eslint.json

@@ -0,0 +1,28 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "allowJs": true,
+  },
+  "include": [
+    "acceptance/*/docker.setup.js",
+    "bin/*.js",
+    "commitlint.config.js",
+    "docs/bin/*.js",
+    "examples/lb3-application/lb3app/**/*.js",
+    "examples/passport-login/web-application/express-app.js",
+    "extensions/context-explorer/public/**/*.js",
+    "packages/booter-lb3app/fixtures/**/*.js",
+    "packages/build/**/*.js",
+    "packages/build/**/*.ts",
+    "packages/cli/**/*.js",
+    "packages/cli/**/*.ts",
+    "packages/eslint-config/eslintrc.js",
+    "packages/repository/examples/**/*.js",
+    "packages/repository/examples/**/*.ts",
+    "packages/tsdocs/bin/*.js",
+    "packages/tsdocs/fixtures/**/*.js"
+  ],
+  "exclude": [
+    "**/node_modules/**/*"
+  ]
+}