feat(rule): implement

.eslintrc

@@ -0,0 +1,23 @@
+{
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": {
+    "ecmaVersion": 2020,
+    "sourceType": "module",
+    "project": "./tsconfig.json"
+  },
+  "settings": {
+    "import/parsers": {
+      "@typescript-eslint/parser": [".ts", ".tsx"]
+    },
+    "import/resolver": {
+      "typescript": {
+        "alwaysTryTypes": true,
+        "directory": "./tsconfig.json"
+      }
+    }
+  },
+  // "plugins": ["@typescript-eslint", "deprecation"],
+  "rules": {
+    // "deprecation/deprecation": "warn"
+  }
+}

.gitignore

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+node_modules
+dist

.prettierrc

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+{
+  "singleQuote": true,
+  "endOfLine": "lf",
+  "trailingComma": "all"
+}

README.md

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+# eslint-plugin-deprecation
+
+> Rule that reports usage of deprecated code
+
+## Prerequisites
+
+This plugin only works with `@typescript-eslint/parser`.
+
+Which means that you should install dev deps:
+
+- `@typescript-eslint/parser`
+- `typescript`
+
+Then configure your `.eslintrc` like this:
+
+```jsonc
+{
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": {
+    "ecmaVersion": 2020,
+    "sourceType": "module",
+    "project": "./tsconfig.json" // <-- Point to your project's tsconfig.json or create new one
+  },
+  "settings": {
+    "import/parsers": {
+      "@typescript-eslint/parser": [".ts", ".tsx"]
+    },
+    "import/resolver": {
+      "typescript": {
+        "alwaysTryTypes": true,
+        "directory": "./tsconfig.json" // <-- Same tsconfig.json must be referenced
+      }
+    }
+  }
+}
+```
+
+## Install
+
+Install the plugin
+
+```
+npm i -D eslint-plugin-deprecation
+```
+
+## Setup
+
+Now add deprecation plugin and rule to your `.eslintrc`:
+
+```jsonc
+{
+  "plugins": ["deprecation", ...],
+  "rules": {
+    "deprecation/deprecation": "warn", // or "error" to have stricter rule
+    ...
+  }
+}
+```
+
+Now eslint will report all deprecated code that you use!
+
+---
+
+_NOTE:_ This code was ported from https://github.com/SonarSource/SonarJS repository.