Improved monorepo tooling setup

refs https://github.com/TryGhost/DevOps/issues/45

- this switches the monorepo over to using Nx instead of Lerna, because
  we don't currently need the versioning+publishing capabilities
- this also adds an `nx.json`, which allows us to enable task caching
- also adds `build:ts` to the TS projects, which is cached for fast execution
- how these interact with the dev.js script will hopefully soon be
  reworked to be a better experience

.github/scripts/dev.js

@@ -39,52 +39,20 @@ const COMMAND_ADMIN = {
     env: {}
 };
 
+const COMMAND_TYPESCRIPT = {
+    name: 'ts',
+    command: 'nx watch --projects=ghost/collections,ghost/in-memory-repository,ghost/mail-events,ghost/model-to-domain-event-interceptor,ghost/post-revisions -- nx run \\$NX_PROJECT_NAME:build:ts',
+    cwd: path.resolve(__dirname, '../../'),
+    prefixColor: 'cyan',
+    env: {}
+};
+
 if (DASH_DASH_ARGS.includes('ghost')) {
-    commands = [COMMAND_GHOST];
+    commands = [COMMAND_GHOST, COMMAND_TYPESCRIPT];
 } else if (DASH_DASH_ARGS.includes('admin')) {
     commands = [COMMAND_ADMIN];
 } else {
-    commands = [COMMAND_GHOST, COMMAND_ADMIN];
-}
-
-if (DASH_DASH_ARGS.includes('revisions') || DASH_DASH_ARGS.includes('all')) {
-    commands.push({
-        name: 'post-revisions',
-        command: 'yarn dev',
-        cwd: path.resolve(__dirname, '../../ghost/post-revisions'),
-        prefixColor: 'green',
-        env: {}
-    });
-}
-
-if (DASH_DASH_ARGS.includes('in-memory-repository') || DASH_DASH_ARGS.includes('all')) {
-    commands.push({
-        name: 'in-memory-repository',
-        command: 'yarn dev',
-        cwd: path.resolve(__dirname, '../../ghost/in-memory-repository'),
-        prefixColor: 'pink',
-        env: {}
-    });
-}
-
-if (DASH_DASH_ARGS.includes('collections') || DASH_DASH_ARGS.includes('all')) {
-    commands.push({
-        name: 'collections',
-        command: 'yarn dev',
-        cwd: path.resolve(__dirname, '../../ghost/collections'),
-        prefixColor: 'pink',
-        env: {}
-    });
-}
-
-if (DASH_DASH_ARGS.includes('mail-events') || DASH_DASH_ARGS.includes('all')) {
-    commands.push({
-        name: 'collections',
-        command: 'yarn dev',
-        cwd: path.resolve(__dirname, '../../ghost/mail-events'),
-        prefixColor: 'pink',
-        env: {}
-    });
+    commands = [COMMAND_GHOST, COMMAND_TYPESCRIPT, COMMAND_ADMIN];
 }
 
 if (DASH_DASH_ARGS.includes('admin-x') || DASH_DASH_ARGS.includes('adminx') || DASH_DASH_ARGS.includes('adminX') || DASH_DASH_ARGS.includes('all')) {

.github/workflows/ci.yml

@@ -175,7 +175,7 @@ jobs:
           path: ghost/**/.eslintcache
           key: eslint-cache
 
-      - run: yarn lint --since ${{ needs.job_get_metadata.outputs.BASE_COMMIT }}
+      - run: yarn nx affected -t lint --base=${{ needs.job_get_metadata.outputs.BASE_COMMIT }}
 
       - uses: tryghost/actions/actions/slack-build@main
         if: failure() && github.event_name == 'push' && github.ref == 'refs/heads/main'
@@ -248,7 +248,7 @@ jobs:
         env:
           DEPENDENCY_CACHE_KEY: ${{ needs.job_install_deps.outputs.dependency_cache_key }}
 
-      - run: yarn test:unit --include-dependents --since ${{ needs.job_get_metadata.outputs.BASE_COMMIT }}
+      - run: yarn nx affected -t test:unit --base=${{ needs.job_get_metadata.outputs.BASE_COMMIT }}
 
       - uses: actions/upload-artifact@v3
         if: startsWith(matrix.node, '18')

ghost/collections/package.json

@@ -7,9 +7,8 @@
     "main": "build/index.js",
     "types": "build/index.d.ts",
     "scripts": {
-        "dev": "tsc --watch --preserveWatchOutput --sourceMap",
         "build": "tsc",
-        "prepare": "tsc",
+        "build:ts": "yarn build",
         "test:unit": "NODE_ENV=testing c8 --src src --all --check-coverage --100 --reporter text --reporter cobertura mocha -r ts-node/register './test/**/*.test.ts'",
         "test": "yarn test:types && yarn test:unit",
         "test:types": "tsc --noEmit",

ghost/core/package.json

@@ -22,9 +22,7 @@
   "scripts": {
     "archive": "npm pack",
     "start": "node index",
-    "setup": "knex-migrator init",
-    "build": "yarn build:css",
-    "build:css": "postcss core/frontend/public/ghost.css --no-map --use cssnano -o core/frontend/public/ghost.min.css",
+    "build": "postcss core/frontend/public/ghost.css --no-map --use cssnano -o core/frontend/public/ghost.min.css",
     "test": "yarn test:unit",
     "test:base": "mocha --require=./test/utils/overrides.js --exit --trace-warnings --recursive --extension=test.js",
     "test:single": "yarn test:base --timeout=60000",
@@ -54,7 +52,7 @@
     "lint:test": "eslint -c test/.eslintrc.js --ignore-path test/.eslintignore 'test/**/*.js' --cache",
     "lint:code": "yarn lint:server && yarn lint:shared && yarn lint:frontend",
     "lint": "yarn lint:server && yarn lint:shared && yarn lint:frontend && yarn lint:test",
-    "prepack": "lerna run build && monobundle"
+    "prepack": "nx run-many -t build --projects='ghost/*' && monobundle"
   },
   "engines": {
     "node": "^16.14.0 || ^18.12.1",

ghost/in-memory-repository/package.json

@@ -7,9 +7,8 @@
   "main": "build/index.js",
   "types": "build/index.d.ts",
   "scripts": {
-    "dev": "tsc --watch --preserveWatchOutput --sourceMap",
     "build": "tsc",
-    "prepare": "tsc",
+    "build:ts": "yarn build",
     "test:unit": "NODE_ENV=testing c8 --src src --all --check-coverage --100 --reporter text --reporter cobertura mocha -r ts-node/register './test/**/*.test.ts'",
     "test": "yarn test:types && yarn test:unit",
     "test:types": "tsc --noEmit",

ghost/mail-events/package.json

@@ -7,9 +7,8 @@
     "main": "build/index.js",
     "types": "build/index.d.ts",
     "scripts": {
-        "dev": "tsc --watch --preserveWatchOutput --sourceMap",
         "build": "tsc",
-        "prepare": "tsc",
+        "build:ts": "yarn build",
         "test:unit": "NODE_ENV=testing c8 --src src --all --check-coverage --100 --reporter text --reporter cobertura mocha -r ts-node/register './test/**/*.test.ts'",
         "test": "yarn test:types && yarn test:unit",
         "test:types": "tsc --noEmit",

ghost/model-to-domain-event-interceptor/package.json

@@ -7,9 +7,8 @@
     "main": "build/index.js",
     "types": "build/index.d.ts",
     "scripts": {
-        "dev": "tsc --watch --preserveWatchOutput --sourceMap",
         "build": "tsc",
-        "prepare": "tsc",
+        "build:ts": "yarn build",
         "test:unit": "NODE_ENV=testing c8 --src src --all --check-coverage --100 --reporter text --reporter cobertura mocha -r ts-node/register './test/**/*.test.ts'",
         "test": "yarn test:types && yarn test:unit",
         "test:types": "tsc --noEmit",

ghost/post-revisions/package.json

@@ -7,9 +7,8 @@
   "main": "build/index.js",
   "types": "build/index.d.ts",
   "scripts": {
-    "dev": "tsc --watch --preserveWatchOutput --sourceMap",
     "build": "tsc",
-    "prepare": "tsc",
+    "build:ts": "yarn build",
     "test:types": "tsc --noEmit",
     "test:unit": "NODE_ENV=testing c8 --src src --all --check-coverage --100  --reporter text --reporter cobertura mocha -r ts-node/register './test/**/*.test.ts'",
     "test": "yarn test:unit && yarn test:types",

nx.json

@@ -0,0 +1,35 @@
+{
+    "tasksRunnerOptions": {
+        "default": {
+            "runner": "nx/tasks-runners/default",
+            "options": {
+                "cacheableOperations": [
+                    "build:ts",
+                    "lint",
+                    "test",
+                    "test:unit"
+                ]
+            }
+        }
+    },
+    "namedInputs": {
+        "default": [
+            "{projectRoot}/**/*"
+        ]
+    },
+    "targetDefaults": {
+        "build:ts": {
+            "dependsOn": [
+                "^build:ts"
+            ],
+            "inputs": [
+                "default",
+                "^default"
+            ],
+            "outputs": [
+                "{projectRoot}/build"
+            ]
+        }
+    },
+    "$schema": "./node_modules/nx/schemas/nx-schema.json"
+}

package.json

@@ -21,21 +21,21 @@
   ],
   "scripts": {
     "archive": "yarn workspace ghost run archive",
-    "build": "lerna run build",
+    "build": "nx run-many -t build",
     "dev:debug": "DEBUG_COLORS=true DEBUG=@tryghost*,ghost:* yarn dev",
     "dev:admin": "node .github/scripts/dev.js --admin",
     "dev:ghost": "node .github/scripts/dev.js --ghost",
     "dev": "node .github/scripts/dev.js",
     "fix": "yarn cache clean && rm -rf node_modules && yarn",
     "knex-migrator": "yarn workspace ghost run knex-migrator",
-    "setup": "yarn && yarn workspace ghost run setup && git submodule update --init",
-    "lint": "lerna run lint",
-    "test": "lerna run test",
-    "test:unit": "lerna run test:unit",
+    "setup": "yarn && git submodule update --init",
+    "lint": "nx run-many -t lint",
+    "test": "nx run-many -t test",
+    "test:unit": "nx run-many -t test:unit",
     "main": "yarn main:monorepo && yarn main:submodules",
     "main:monorepo": "git checkout main && git pull ${GHOST_UPSTREAM:-origin} main && yarn",
     "main:submodules": "git submodule sync && git submodule update && git submodule foreach \"git checkout main && git pull ${GHOST_UPSTREAM:-origin} main && yarn\"",
-    "prepare": "husky install .github/hooks && lerna run prepare"
+    "prepare": "husky install .github/hooks && nx run-many -t build:ts"
   },
   "resolutions": {
     "@elastic/elasticsearch": "8.5.0",
@@ -123,16 +123,12 @@
   "lint-staged": {
     "*.js": "eslint"
   },
-  "lerna": {
-    "version": "0.0.0",
-    "npmClient": "yarn"
-  },
   "devDependencies": {
     "concurrently": "8.2.0",
     "eslint-plugin-ghost": "3.2.0",
     "husky": "8.0.3",
-    "lerna": "7.1.1",
     "lint-staged": "13.2.3",
+    "nx": "16.5.1",
     "ts-node": "10.9.1"
   }
 }