Add ESLint config to docs/sources

Author: oleiade

.eslintignore

@@ -1,12 +1,11 @@
 .cache/
 public/
 node_modules/
-docs/sources/
 docs/sources/get-started/run-cloud-tests-from-the-CLI.md
 docs/sources/get-started/run-your-first-tests.md
 CONTRIBUTING_FILE_FORMAT.md
 src/data/markdown/docs/40 xk6-disruptor/01 Get started/01 First steps.md
-src/data/markdown/docs/40 xk6-disruptor/01 Get started/04 Expose  Your Application.md
+src/data/markdown/docs/40 xk6-disruptor/01 Get started/04 Expose Your Application.md
 src/data/markdown/docs/40 xk6-disruptor/04 Examples/01 Inject Grpc faults into Service.md
 src/data/markdown/docs/40 xk6-disruptor/04 Examples/02 Inject HTTP faults into Pod.md
 src/data/markdown/docs/05 Examples/02 Tutorials/01 Get started with k6/100 Test-for-functional-behavior.md

docs/sources/.eslintrc.js

@@ -0,0 +1,44 @@
+module.exports = {
+  root: true,
+  env: {
+    es2017: true,
+    commonjs: true,
+  },
+  parserOptions: {
+    ecmaVersion: '2017',
+    sourceType: 'module',
+  },
+  extends: ['plugin:mdx/recommended', 'plugin:prettier/recommended'],
+  plugins: ['markdown'],
+  overrides: [
+    {
+      // Enable the Markdown processor for all .md files.
+      files: ['**/*.md'],
+      processor: 'markdown/markdown',
+    },
+    {
+      // Customize the configuration ESLint uses for ```js, ```javascript
+      files: ['**/*.md/*.js', '**/*.md/*.javascript'],
+      rules: {
+        'no-undef': 'error',
+        'no-else-return': 'error',
+        'no-extra-boolean-cast': 'error',
+        'no-duplicate-case': 'error',
+        'no-const-assign': 'error',
+        'no-dupe-args': 'error',
+        'no-dupe-else-if': 'error',
+        'no-var': 'error',
+        'use-isnan': 'error',
+        'func-style': ['error', 'declaration', { allowArrowFunctions: true }],
+        'prefer-const': 'error',
+      },
+    },
+  ],
+  globals: {
+    console: 'readonly',
+    __VU: 'readonly',
+    __ENV: 'readonly',
+    __ITER: 'readonly',
+    open: 'readonly',
+  },
+};