[OPIK-927] [TypeScript SDK] Add CI/CD flows (#1257)

* [OPIK-927] Add lint / TS check / unit-tests to the GitHub actions

* Add ESLint support + fix ESLint errors/warnings

* Extend CI/CD linter to more folders

.github/workflows/typescript_sdk_linter.yml

@@ -0,0 +1,35 @@
+name: TypeScript SDK Linter
+run-name: "TypeScript SDK Linter ${{ github.ref_name }} by @${{ github.actor }}"
+on:
+  pull_request:
+    paths:
+      - "sdks/typescript/**"
+  push:
+    branches:
+      - "main"
+    paths:
+      - "sdks/typescript/**"
+  workflow_dispatch:
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: sdks/typescript
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4.2.2
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4.2.0
+        with:
+          node-version: "20"
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: ESLint
+        run: npm run lint
+
+      - name: Type check
+        run: npm run typecheck

.github/workflows/typescript_sdk_unit_tests.yml

@@ -0,0 +1,32 @@
+name: TypeScript SDK Unit Tests
+run-name: "TypeScript SDK Unit Tests ${{ github.ref_name }} by @${{ github.actor }}"
+on:
+  pull_request:
+    paths:
+      - "sdks/typescript/**"
+  push:
+    branches:
+      - "main"
+    paths:
+      - "sdks/typescript/**"
+  workflow_dispatch:
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: sdks/typescript
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4.2.2
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4.2.0
+        with:
+          node-version: "20"
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Unit tests
+        run: npm run test

sdks/typescript/eslint.config.js

@@ -0,0 +1,12 @@
+import globals from "globals";
+import pluginJs from "@eslint/js";
+import tseslint from "typescript-eslint";
+
+/** @type {import('eslint').Linter.Config[]} */
+export default [
+  { ignores: ["dist/**", "node_modules/**", "src/opik/rest_api/**"] },
+  { files: ["src/**/*.{js,mjs,cjs,ts}", "tests/**/*.{js,mjs,cjs,ts}"] },
+  { languageOptions: { globals: globals.browser } },
+  pluginJs.configs.recommended,
+  ...tseslint.configs.recommended,
+];