Serialize and Deserialize chain state

We want to allow to store prompt state half compiled. This is helpful
when using tool calls where user needs to receive a response from the AI that contains a tool call, do some work and respond back with the result of that work. In this scenario we need to serialize current compilation state to restart the compilation from that point.

.github/workflows/lint.yml

@@ -0,0 +1,56 @@
+name: Linter & Types
+
+on:
+  pull_request:
+    branches:
+      - main
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [20.x]
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 2
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v3
+        with:
+          version: 9
+          run_install: false
+
+      - name: Get pnpm store directory
+        shell: bash
+        run: |
+          echo "STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV
+
+      - name: Setup pnpm cache
+        uses: actions/cache@v3
+        with:
+          path: ${{ env.STORE_PATH }}
+          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+          restore-keys: |
+            ${{ runner.os }}-pnpm-store-
+
+      - name: Install Node.js dependencies
+        run: pnpm install
+
+      - name: Prettier
+        run: pnpm prettier:check
+
+      - name: Node.js Lint
+        run: pnpm lint
+
+      - name: TypeScript
+        run: pnpm tc
+

.github/workflows/test.yml

@@ -0,0 +1,50 @@
+name: Tests
+
+on:
+  pull_request:
+    branches:
+      - main
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [20.x]
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 2
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v3
+        with:
+          version: 9
+          run_install: false
+
+      - name: Get pnpm store directory
+        shell: bash
+        run: |
+          echo "STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV
+
+      - name: Setup pnpm cache
+        uses: actions/cache@v3
+        with:
+          path: ${{ env.STORE_PATH }}
+          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+          restore-keys: |
+            ${{ runner.os }}-pnpm-store-
+
+      - name: Install Node.js dependencies
+        run: pnpm install
+
+      - name: Node.js Test
+        env:
+          NODE_ENV: test
+        run: pnpm test

.prettierignore

@@ -0,0 +1,4 @@
+.*
+dist
+build
+**/tests/fixtures

.prettierrc

@@ -0,0 +1,6 @@
+{
+  "semi": false,
+  "jsxSingleQuote": true,
+  "singleQuote": true,
+  "trailingComma": "all"
+}

README.md

@@ -50,4 +50,4 @@ This is just a small example of what PromptL can do. It is a powerful tool that
 
 ## Links
 
-[Website](https://promptl.ai/) | [Documentation](https://docs.latitude.so/promptl/getting-started/introduction)
+[Website](https://promptl.ai/) | [Documentation](https://docs.latitude.so/promptl/getting-started/introduction)

eslint.config.mjs

@@ -0,0 +1,63 @@
+import typescriptEslintEslintPlugin from '@typescript-eslint/eslint-plugin'
+import prettier from 'eslint-plugin-prettier'
+import globals from 'globals'
+import tsParser from '@typescript-eslint/parser'
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
+import js from '@eslint/js'
+import { FlatCompat } from '@eslint/eslintrc'
+
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(__filename)
+const compat = new FlatCompat({
+  baseDirectory: __dirname,
+  recommendedConfig: js.configs.recommended,
+  allConfig: js.configs.all,
+})
+
+export default [
+  {
+    ignores: ['**/.*.js', '**/node_modules/', '**/dist/'],
+  },
+  ...compat.extends('eslint:recommended'),
+  {
+    plugins: {
+      '@typescript-eslint': typescriptEslintEslintPlugin,
+      'prettier': prettier,
+    },
+
+    languageOptions: {
+      globals: {
+        ...globals.node,
+        ...globals.browser,
+      },
+
+      parser: tsParser,
+    },
+
+    settings: {
+      'import/resolver': {
+        typescript: {
+          project: './tsconfig.json',
+        },
+      },
+    },
+
+    rules: {
+      'no-constant-condition': 'off',
+      'no-unused-vars': 'off',
+
+      '@typescript-eslint/no-unused-vars': [
+        'error',
+        {
+          args: 'all',
+          argsIgnorePattern: '^_',
+          varsIgnorePattern: '^_',
+        },
+      ],
+    },
+  },
+  {
+    files: ['**/*.js', '**/*.jsx', '**/*.ts', '**/*.tsx'],
+  },
+]

package.json

@@ -28,6 +28,7 @@
     "test": "vitest run",
     "test:watch": "vitest",
     "prettier": "prettier --write src/**/*.ts",
+    "prettier:check": "prettier --check src/**/*.ts --ignore-path .prettierrcignore",
     "lint": "eslint src",
     "tc": "tsc --noEmit"
   },
@@ -39,10 +40,17 @@
     "zod": "^3.23.8"
   },
   "devDependencies": {
+    "eslint": "^9.17.0",
+    "@eslint/eslintrc": "^3.2.0",
+    "@eslint/js": "^9.17.0",
     "@rollup/plugin-alias": "^5.1.0",
     "@rollup/plugin-typescript": "^11.1.6",
     "@types/estree": "^1.0.1",
     "@types/node": "^20.12.12",
+    "@typescript-eslint/eslint-plugin": "^8.19.0",
+    "eslint-plugin-prettier": "^5.2.1",
+    "globals": "^15.14.0",
+    "prettier": "^3.4.2",
     "rollup": "^4.10.0",
     "rollup-plugin-dts": "^6.1.1",
     "tslib": "^2.8.1",