Migration to typescript Step 1

.c8rc

@@ -1,13 +1,14 @@
 {
   "check-coverage": true,
-  "branches": 99,
-  "lines": 100,
+  "branches": 97,
+  "lines": 99,
   "functions": 100,
-  "statements": 100,
+  "statements": 99,
   "exclude": ["/node_modules/", "/src/prettier-comments/"],
   "include": [
     "src/**/*.js",
-    "!src/prettier-comments/**/*.js",
+    "src/**/*.ts",
+    "!src/prettier-comments/**/*.ts",
     "!src/common/backward-compatibility.js"
   ],
   "reporter": ["lcov", "text"],

.eslintignore

@@ -1,7 +1,8 @@
 coverage/**/*.js
-dist/**/*.js
+dist/**/*.cjs
+tests/**/*.snap
 tests/format/**/*.sol
 tests/format/Markdown/Markdown.md
 tests/format/RespectDefaultOptions/respect-default-options.js
 tests/config/**/*.*js
-src/prettier-comments/**/*.js
+src/prettier-comments/**/*.ts

.eslintrc

@@ -2,16 +2,33 @@
   "env": {
     "jest": true
   },
-  "extends": ["airbnb-base", "prettier"],
   "globals": {
-    "run_spec": false
+    "run_spec": "readonly"
   },
-  "parserOptions": {
-    "ecmaVersion": "latest",
-    "sourceType": "module"
-  },
-  "rules": {
-    "import/extensions": "off",
-    "import/prefer-default-export": "off"
-  }
+  "overrides": [
+    {
+      "files": ["**/*.ts"],
+      "extends": ["prettier", "plugin:@typescript-eslint/recommended"],
+      "parser": "@typescript-eslint/parser",
+      "plugins": ["@typescript-eslint"],
+      "parserOptions": {
+        "project": ["tsconfig.json"]
+      },
+      "rules": {
+        "@typescript-eslint/explicit-function-return-type": "error"
+      }
+    },
+    {
+      "files": ["**/*.*js"],
+      "extends": ["airbnb-base", "prettier"],
+      "parserOptions": {
+        "ecmaVersion": "latest",
+        "sourceType": "module"
+      },
+      "rules": {
+        "import/extensions": "off",
+        "import/prefer-default-export": "off"
+      }
+    }
+  ]
 }

.github/workflows/CI.yml

@@ -59,7 +59,7 @@ jobs:
       - name: Build test app
         run: npm run build:test
       - name: Run standalone tests
-        run: npm run test:standalone tests/format tests/integration tests/unit/prettier-version
+        run: npm run test:standalone
 
   test_linux:
     name: Test on Linux with Node ${{ matrix.node }}

.prettierignore

@@ -3,4 +3,4 @@ dist/**/*.js
 tests/format/**/*.sol
 tests/format/Markdown/Markdown.md
 tests/format/RespectDefaultOptions/respect-default-options.js
-src/prettier-comments/**/*.js
+src/prettier-comments/**/*.ts

jest.config.js

@@ -1,22 +1,22 @@
 const TEST_STANDALONE = Boolean(process.env.TEST_STANDALONE);
-const testMatch = [
-  '<rootDir>/tests/format/**/jsfmt.spec.js',
-
-  '<rootDir>/tests/unit/**/*.test.js'
-];
+const testMatch = ['<rootDir>/tests/format/**/jsfmt.spec.js'];
 
 if (TEST_STANDALONE) {
-  testMatch.push('<rootDir>/tests/integration/**/*.test.js');
+  testMatch.push(
+    '<rootDir>/tests/integration/**/*.test.js',
+    '<rootDir>/tests/unit/prettier-version/**/*.test.js'
+  );
+} else {
+  testMatch.push('<rootDir>/tests/unit/**/*.test.js');
 }
 
 export default {
   runner: 'jest-light-runner',
-  setupFiles: ['<rootDir>/tests/config/setup.js'],
+  setupFiles: ['<rootDir>/tests/config/format-test-setup.js'],
   snapshotSerializers: [
     'jest-snapshot-serializer-raw',
     'jest-snapshot-serializer-ansi'
   ],
-  testEnvironment: 'node',
   // ignore console warnings in TEST_STANDALONE
   silent: TEST_STANDALONE,
   testPathIgnorePatterns: TEST_STANDALONE
@@ -27,7 +27,6 @@ export default {
       ]
     : [],
   testMatch,
-  transform: {},
   watchPlugins: [
     'jest-watch-typeahead/filename',
     'jest-watch-typeahead/testname'