diff --git a/@commitlint/cli/src/cli.ts b/@commitlint/cli/src/cli.ts
index 0820831a5e..432336086a 100644
--- a/@commitlint/cli/src/cli.ts
+++ b/@commitlint/cli/src/cli.ts
@@ -286,7 +286,7 @@ async function main(args: MainArgs): Promise<void> {
 					message: [
 						'Please add rules to your `commitlint.config.js`',
 						'    - Getting started guide: https://commitlint.js.org/#/?id=getting-started',
-						'    - Example config: https://github.com/conventional-changelog/commitlint/blob/master/%40commitlint/config-conventional/index.js',
+						'    - Example config: https://github.com/conventional-changelog/commitlint/blob/master/%40commitlint/config-conventional/src/index.ts',
 					].join('\n'),
 				},
 			],
diff --git a/@commitlint/config-conventional/package.json b/@commitlint/config-conventional/package.json
index 7db13d0932..6f0bf41570 100644
--- a/@commitlint/config-conventional/package.json
+++ b/@commitlint/config-conventional/package.json
@@ -2,8 +2,9 @@
   "name": "@commitlint/config-conventional",
   "version": "18.6.0",
   "description": "Shareable commitlint config enforcing conventional commits",
+  "main": "lib/index.js",
   "files": [
-    "index.js"
+    "lib/"
   ],
   "scripts": {
     "deps": "dep-check",
@@ -37,6 +38,7 @@
     "@commitlint/utils": "^18.4.4"
   },
   "dependencies": {
+    "@commitlint/types": "^18.6.0",
     "conventional-changelog-conventionalcommits": "^7.0.2"
   },
   "gitHead": "70f7f4688b51774e7ac5e40e896cdaa3f132b2bc"
diff --git a/@commitlint/config-conventional/index.test.js b/@commitlint/config-conventional/src/index.test.ts
similarity index 97%
rename from @commitlint/config-conventional/index.test.js
rename to @commitlint/config-conventional/src/index.test.ts
index 2dad581937..144074eefb 100644
--- a/@commitlint/config-conventional/index.test.js
+++ b/@commitlint/config-conventional/src/index.test.ts
@@ -1,9 +1,9 @@
 import lint from '@commitlint/lint';
-import {rules, parserPreset} from '.';
+import {config} from '.';
 
 const commitLint = async (message) => {
-	const preset = await require(parserPreset)();
-	return lint(message, rules, {...preset});
+	const preset = await require(config.parserPreset)();
+	return lint(message, config.rules, {...preset});
 };
 
 const messages = {
diff --git a/@commitlint/config-conventional/index.js b/@commitlint/config-conventional/src/index.ts
similarity index 74%
rename from @commitlint/config-conventional/index.js
rename to @commitlint/config-conventional/src/index.ts
index 9a0a1d2507..d32da4aaf3 100644
--- a/@commitlint/config-conventional/index.js
+++ b/@commitlint/config-conventional/src/index.ts
@@ -1,23 +1,33 @@
-module.exports = {
+import {
+	RuleConfigCondition,
+	RuleConfigSeverity,
+	TargetCaseType,
+} from '@commitlint/types';
+
+export const config = {
 	parserPreset: 'conventional-changelog-conventionalcommits',
 	rules: {
-		'body-leading-blank': [1, 'always'],
-		'body-max-line-length': [2, 'always', 100],
-		'footer-leading-blank': [1, 'always'],
-		'footer-max-line-length': [2, 'always', 100],
-		'header-max-length': [2, 'always', 100],
-		'header-trim': [2, 'always'],
+		'body-leading-blank': [RuleConfigSeverity.Warning, 'always'] as const,
+		'body-max-line-length': [RuleConfigSeverity.Error, 'always', 100] as const,
+		'footer-leading-blank': [RuleConfigSeverity.Warning, 'always'] as const,
+		'footer-max-line-length': [
+			RuleConfigSeverity.Error,
+			'always',
+			100,
+		] as const,
+		'header-max-length': [RuleConfigSeverity.Error, 'always', 100] as const,
+		'header-trim': [RuleConfigSeverity.Error, 'always'] as const,
 		'subject-case': [
-			2,
+			RuleConfigSeverity.Error,
 			'never',
 			['sentence-case', 'start-case', 'pascal-case', 'upper-case'],
-		],
-		'subject-empty': [2, 'never'],
-		'subject-full-stop': [2, 'never', '.'],
-		'type-case': [2, 'always', 'lower-case'],
-		'type-empty': [2, 'never'],
+		] as [RuleConfigSeverity, RuleConfigCondition, TargetCaseType[]],
+		'subject-empty': [RuleConfigSeverity.Error, 'never'] as const,
+		'subject-full-stop': [RuleConfigSeverity.Error, 'never', '.'] as const,
+		'type-case': [RuleConfigSeverity.Error, 'always', 'lower-case'] as const,
+		'type-empty': [RuleConfigSeverity.Error, 'never'] as const,
 		'type-enum': [
-			2,
+			RuleConfigSeverity.Error,
 			'always',
 			[
 				'build',
@@ -32,7 +42,7 @@ module.exports = {
 				'style',
 				'test',
 			],
-		],
+		] as [RuleConfigSeverity, RuleConfigCondition, string[]],
 	},
 	prompt: {
 		questions: {
diff --git a/@commitlint/config-conventional/tsconfig.json b/@commitlint/config-conventional/tsconfig.json
index 2905f19318..49479bf34f 100644
--- a/@commitlint/config-conventional/tsconfig.json
+++ b/@commitlint/config-conventional/tsconfig.json
@@ -5,6 +5,6 @@
     "rootDir": "./src",
     "outDir": "./lib"
   },
-  "include": ["./**/*.ts"],
-  "exclude": ["./**/*.test.ts"]
+  "include": ["./src"],
+  "exclude": ["./src/**/*.test.ts", "./lib/**/*"]
 }
diff --git a/README.md b/README.md
index 916ec5d75e..1b3c8367cd 100644
--- a/README.md
+++ b/README.md
@@ -115,7 +115,7 @@ These can be modified by [your own configuration](#config).
   - `commitlint` field in `package.json`
 - Packages: [cli](./@commitlint/cli), [core](./@commitlint/core)
 - See [Rules](./docs/reference-rules.md) for a complete list of possible rules
-- An example configuration can be found at [@commitlint/config-conventional](./@commitlint/config-conventional/index.js)
+- An example configuration can be found at [@commitlint/config-conventional](./@commitlint/config-conventional/src/index.ts)
 
 ## Shared configuration
 
diff --git a/tsconfig.json b/tsconfig.json
index 0b126bbc7f..cf20a54fe6 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -23,6 +23,7 @@
     {"path": "@commitlint/cli"},
     {"path": "@commitlint/travis-cli"},
     {"path": "@commitlint/prompt"},
-    {"path": "@commitlint/cz-commitlint"}
+    {"path": "@commitlint/cz-commitlint"},
+    {"path": "@commitlint/config-conventional"}
   ]
 }