feat(ts): can change tsconfig by env (#136)

README.md

@@ -57,7 +57,16 @@ Install [VS Code ESLint extension](https://marketplace.visualstudio.com/items?it
 
 ### TypeScript Aware Rules
 
-Type aware rules are enabled when a `tsconfig.eslint.json` is found in the project root. Refer to [this file](https://github.com/antfu/eslint-config/blob/main/packages/typescript/index.js#L17).
+Type aware rules are enabled when a `tsconfig.eslint.json` is found in the project root. If you want to enable it while have no `tsconfig.eslint.json` in the project root, you can change tsconfig name by modifying `ESLINT_TSCONFIG` env. 
+
+```js
+// .eslintrc.js
+process.env.ESLINT_TSCONFIG = 'tsconfig.json'
+
+module.exports = {
+  extends: '@antfu'
+}
+```
 
 ## Extended Reading
 

packages/typescript/index.js

@@ -2,6 +2,8 @@ const fs = require('fs')
 const { join } = require('path')
 const basic = require('@antfu/eslint-config-basic')
 
+const tsconfig = process.env.ESLINT_TSCONFIG || 'tsconfig.eslint.json'
+
 module.exports = {
   extends: [
     '@antfu/eslint-config-basic',
@@ -14,12 +16,12 @@ module.exports = {
     },
   },
   overrides: basic.overrides.concat(
-    !fs.existsSync(join(process.cwd(), 'tsconfig.eslint.json'))
+    !fs.existsSync(join(process.cwd(), tsconfig))
       ? []
       : [{
           parserOptions: {
             tsconfigRootDir: process.cwd(),
-            project: ['tsconfig.eslint.json'],
+            project: [tsconfig],
           },
           parser: '@typescript-eslint/parser',
           excludedFiles: ['**/*.md/*.*'],