Improve dev setup

.eslintignore

@@ -1,18 +1,31 @@
-## extensions
-*.*
-LICENSE
+#####################
+## Specific to ESLint
+#####################
+
+## Ignore all files (but still allow sub-folder scanning)
+*
+!*/
+
+## Allow certain file types
+!*.cjs
 !*.js
 !*.json
+!*.mjs
 !*.ts
 
-!/.github/
-/fixtures/
+#########################
+## Shared between linters
+#########################
+
+fixtures
+
+########################
+## Same as in .gitignore
+########################
 
-## same as in .gitignore
-node_modules
-*.log
 .DS_Store
+*.log
 cache
 coverage
 dist
-junit.xml
+node_modules

.eslintrc.js

@@ -1,10 +1,11 @@
+/** @type{import("eslint").Linter.Config} */
 module.exports = {
   extends: ["@kachkaev/eslint-config-base"],
+  reportUnusedDisableDirectives: true,
   rules: {
     /* eslint-disable @typescript-eslint/naming-convention */
-    "unicorn/prefer-json-parse-buffer": "off",
-    "unicorn/prefer-module": "off",
-    "unicorn/prefer-node-protocol": "off",
+    "unicorn/prefer-module": "off", // Can be enabled after switching to ESM
+    "unicorn/prefer-node-protocol": "off", // Can be enabled after switching to ESM or dropping Node.js 14
     /* eslint-enable @typescript-eslint/naming-convention */
   },
 };

.github/workflows/ci.yml

@@ -95,10 +95,10 @@ jobs:
       - name: Run unit tests
         run: yarn test
         env:
-          REPORT_TEST_RESULTS_AND_COVERAGE: ${{ matrix.os == 'ubuntu-22.04' && matrix.node == 18 }}
+          TEST_COVERAGE: ${{ matrix.os == 'ubuntu-22.04' && matrix.node == 18 }}
 
       - name: Report code coverage to codecov.io
         uses: codecov/codecov-action@v3
         if: matrix.os == 'ubuntu-22.04' && matrix.node == 18
         with:
-          files: ./coverage/cobertura-coverage.xml
+          files: coverage/lcov.info

.gitignore

@@ -1,7 +1,6 @@
-node_modules
-*.log
 .DS_Store
+*.log
 cache
 coverage
 dist
-junit.xml
+node_modules

.markdownlint.json

@@ -1,5 +1,3 @@
 {
-  "extends": "./node_modules/@kachkaev/markdownlint-config/index.json",
-  "first-line-heading": false,
-  "no-inline-html": false
+  "extends": "@kachkaev/markdownlint-config"
 }

.markdownlintignore

@@ -1,16 +1,27 @@
-## extensions
-*.*
-LICENSE
+###########################
+## Specific to Markdownlint
+###########################
+
+## Ignore all files (but still allow sub-folder scanning)
+*
+!*/
+
+## Allow certain file types
 !*.md
 
-!/.github/
-/fixtures/
+#########################
+## Shared between linters
+#########################
+
+fixtures
+
+########################
+## Same as in .gitignore
+########################
 
-## same as in .gitignore
-node_modules
-*.log
 .DS_Store
+*.log
 cache
 coverage
 dist
-junit.xml
+node_modules

.prettierignore

@@ -1,20 +1,33 @@
-## extensions
-*.*
-LICENSE
+#######################
+## Specific to Prettier
+#######################
+
+## Ignore all files (but still allow sub-folder scanning)
+*
+!*/
+
+## Allow certain file types
+!*.cjs
 !*.js
 !*.json
 !*.md
+!*.mjs
 !*.ts
 !*.yml
 
-!/.github/
-/fixtures/
+#########################
+## Shared between linters
+#########################
+
+fixtures
+
+########################
+## Same as in .gitignore
+########################
 
-## same as in .gitignore
-node_modules
-*.log
 .DS_Store
+*.log
 cache
 coverage
 dist
-junit.xml
+node_modules

jest.config.mjs

@@ -0,0 +1,7 @@
+/* eslint-disable import/no-anonymous-default-export */
+/** @type {import("jest").Config} */
+export default {
+  collectCoverage: !!process.env.TEST_COVERAGE,
+  collectCoverageFrom: ["dist/**/*.js", "!dist/**/*.test.js"],
+  testRegex: ".test.js$",
+};

package.json

@@ -14,25 +14,25 @@
   "license": "BSD-3-Clause",
   "main": "dist",
   "scripts": {
-    "build": "tsc --project .",
+    "build": "tsc",
     "clean": "rimraf cache coverage dist",
     "fix": "npm-run-all --continue-on-error fix:*",
-    "fix:eslint": "eslint --fix \"**/*\"",
-    "fix:markdownlint": "markdownlint --fix \"**/*\"",
+    "fix:eslint": "eslint --fix .",
+    "fix:markdownlint": "markdownlint --fix .",
     "fix:prettier": "prettier --write .",
     "fix:yarn-deduplicate": "yarn install && yarn-deduplicate --strategy=fewer && yarn install",
     "lint": "npm-run-all --continue-on-error lint:*",
-    "lint:markdownlint": "markdownlint \"**/*\"",
+    "lint:markdownlint": "markdownlint .",
     "lint:prettier": "prettier --check .",
-    "lint:tsc": "tsc --project .",
-    "lint:eslint": "eslint \"**/*\" --report-unused-disable-directives",
+    "lint:tsc": "tsc --noEmit",
+    "lint:eslint": "eslint --report-unused-disable-directives .",
     "lint:yarn-deduplicate": "yarn-deduplicate --fail --list --strategy=fewer",
     "prepare": "husky install",
     "prepublishOnly": "yarn lint && yarn test",
     "test": "yarn clean && yarn build && jest"
   },
   "lint-staged": {
-    "**/*": [
+    "**": [
       "markdownlint --fix",
       "prettier --write"
     ]
@@ -46,16 +46,15 @@
     "temp-dir": "^2.0.0"
   },
   "devDependencies": {
-    "@kachkaev/eslint-config-base": "^0.4.3",
-    "@kachkaev/markdownlint-config": "^0.3.0",
+    "@kachkaev/eslint-config-base": "^0.5.0",
+    "@kachkaev/markdownlint-config": "^0.5.0",
     "@types/jest": "^29.2.2",
     "@types/object-hash": "^2.2.1",
     "@types/prettier": "^2.7.1",
     "@types/rimraf": "^3.0.2",
     "eslint": "^8.26.0",
     "husky": "^8.0.1",
     "jest": "^29.2.2",
-    "jest-junit": "^14.0.1",
     "lint-staged": "^13.0.3",
     "markdownlint-cli": "^0.32.2",
     "npm-run-all": "^4.1.5",

src/printer.ts

@@ -9,7 +9,7 @@ export const print = (path: AstPath) => {
     }
 
     /* istanbul ignore next */
-    default:
+    default: {
       if (process.env.NODE_ENV === "test") {
         throw new Error(
           `Unknown Elm node: ${JSON.stringify(
@@ -23,5 +23,6 @@ export const print = (path: AstPath) => {
       console.error("Unknown Elm node:", node);
 
       return node.source;
+    }
   }
 };

tsconfig.json

@@ -4,6 +4,7 @@
     "inlineSourceMap": true,
     "lib": ["ES2019"],
     "module": "commonjs",
+    "checkJs": true,
     "outDir": "dist",
     "rootDir": "src",
     "strict": true,