fix: fail node/no-missing-import rule on TS files (#215)

lib/node.js

@@ -1,5 +1,11 @@
 module.exports = {
   extends: ["plugin:node/recommended"],
+  settings: {
+    node: {
+      // https://github.com/mysticatea/eslint-plugin-node/blob/master/docs/rules/no-missing-import.md#tryextensions
+      tryExtensions: [".js", ".json", ".node", ".ts", ".jsx", ".tsx"]
+    }
+  },
   rules: {
     "no-console": "off"
   }

test/fixtures/node-typescript/error.ts

@@ -0,0 +1,2 @@
+import { sum } from "./sum2";
+sum();

test/fixtures/node-typescript/ok.ts

@@ -0,0 +1,3 @@
+// prettier-ignore
+import { sum } from "./sum";
+sum();

test/fixtures/node-typescript/sum.ts

@@ -0,0 +1,3 @@
+export const sum = () => {
+  return 10;
+};

test/lib/runLintWithFixtures.js

@@ -18,7 +18,6 @@ const runLintWithFixtures = (type, configFile = `lib/${type}.js`) => {
   const targetDir = path.resolve(__dirname, "..", "fixtures", type);
   const lintResult = cli.executeOnFiles([targetDir]);
   // console.log(JSON.stringify(lintResult, null, 2));
-
   return lintResult.results.reduce((results, { filePath, messages }) => {
     // strip path
     const fileName = filePath.replace(`${targetDir}/`, "");

test/node-typescript.js

@@ -0,0 +1,19 @@
+const assert = require("assert");
+const runLintWithFixtures = require("./lib/runLintWithFixtures");
+
+describe("node-typescript", () => {
+  it("should get expected errors and warninigs", () => {
+    // We use react presets in order to support ES2017 syntax
+    const result = runLintWithFixtures(
+      "node-typescript",
+      "presets/node-typescript-prettier.js"
+    );
+    assert.deepStrictEqual(result, {
+      "ok.ts": {},
+      "sum.ts": {},
+      "error.ts": {
+        errors: ["node/no-missing-import"]
+      }
+    });
+  });
+});