chore(all): removed unused npm scripts + moved linting in PR checks (#1125)

* chore: removed unused npm scripts + moved linting in PR checks

* fix: typo in npm command

* chore: added @typescript-eslint/eslint-plugin to examples

* chore: added eslint dependencies to examples

* fix: add eslint local config to examples

* fix: added eslintrc to cdk

* fix: added scoped linting to layer-publisher

* chore: update husky to lint everything

* chore: update GH CodeSpaces & GitPod specs

* chore: update GH CodeSpaces & GitPod specs

* fix: cache key in layer-publisher

* fix: add local eslintrc to layer-publisher

* chore: remove lerna mention in contributing

Author: dreamorosi

Diff for: .devcontainer/devcontainer.json

@@ -26,7 +26,7 @@
     "ms-azuretools.vscode-docker"
   ],
   // Use 'postCreateCommand' to run commands after the container is created.
-  "postCreateCommand": "npm ci --foreground-scripts; cd examples/cdk; npm ci; cd ../sam; npm ci; cd ../../; npm run init-environment",
+  "postCreateCommand": "npm run setup-local",
   // Comment out connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
   "remoteUser": "node"
 }

Diff for: .github/workflows/pr_lint_and_test.yml renamed to .github/workflows/pr-run-linting-check-and-unit-tests.yml

@@ -5,4 +5,4 @@ on:
     types: [opened, synchronize]
 jobs:
   run-unit-tests:
-    uses: ./.github/workflows/reusable-run-unit-tests.yml
+    uses: ./.github/workflows/reusable-run-linting-check-and-unit-tests.yml

Diff for: .github/workflows/reusable-run-unit-tests.yml renamed to .github/workflows/reusable-run-linting-check-and-unit-tests.yml

@@ -4,7 +4,7 @@ on:
   workflow_call:
 
 jobs:
-  run-unit-tests-on-utils:
+  run-linting-check-and-unit-tests-on-utilities:
     runs-on: ubuntu-latest
     env:
       NODE_ENV: dev
@@ -29,21 +29,21 @@ jobs:
           path: "./node_modules"
           # Use the combo between node version, name, and SHA-256 hash of the lock file as cache key so that
           # if one of them changes the cache is invalidated/discarded
-          key: ${{ matrix.version }}-cache-utils-node-modules-${{ hashFiles('./package-lock.json') }}
+          key: ${{ matrix.version }}-cache-utilities-node-modules-${{ hashFiles('./package-lock.json') }}
       - name: Install dependencies
-        # We can skip the install if there was a cache hit
+        # We can skip the installation if there was a cache hit
         if: steps.cache-node-modules.outputs.cache-hit != 'true'
         # See https://github.com/npm/cli/issues/4475 to see why --foreground-scripts
         run: npm ci --foreground-scripts
       - name: Build packages
         # If there's a cache hit we still need to manually build the packages
         # this would otherwise have been done automatically as a part of the
-        # postinstall npm hook
+        # post-install npm hook
         if: steps.cache-node-modules.outputs.cache-hit == 'true'
         run: |
           npm run build -w packages/commons
           npm run build -w packages/logger & npm run build -w packages/tracer & npm run build -w packages/metrics
-      - name: Lint
+      - name: Run linting
         run: npm run lint -w packages/commons -w packages/logger -w packages/tracer -w packages/metrics
       - name: Run unit tests
         run: npm t -w packages/commons -w packages/logger -w packages/tracer -w packages/metrics
@@ -77,9 +77,11 @@ jobs:
           # invalidated/discarded for all.
           key: ${{ matrix.example }}-cache-examples-node-modules-${{ hashFiles('./examples/*/package-lock.json') }}
       - name: Install dependencies
-        # We can skip the install if there was a cache hit
+        # We can skip the installation if there was a cache hit
         if: steps.cache-node-modules.outputs.cache-hit != 'true'
         run: npm ci
+      - name: Run linting
+        run: npm run lint
       - name: Run tests
         run: npm t
   check-layer-publisher:
@@ -103,8 +105,12 @@ jobs:
         with:
           path: "./layer-publisher/node_modules"
           # Use the combo between example, name, and SHA-256 hash of the layer-publisher lock files as cache key.
-          key: cache-layer-publisher-node-modules-${{ hashFiles('./layer-publisher/*/package-lock.json') }}
+          key: cache-layer-publisher-node-modules-${{ hashFiles('./layer-publisher/package-lock.json') }}
       - name: Install Layer publisher
-        # We can skip the install if there was a cache hit
+        # We can skip the installation if there was a cache hit
         if: steps.cache-node-modules.outputs.cache-hit != 'true'
         run: npm ci
+      - name: Run linting
+        run: npm run lint
+      - name: Run tests
+        run: npm t

Diff for: .gitpod.yml

@@ -5,22 +5,13 @@ tasks:
       nvm use
       # Install npm 8.x
       npm i -g npm@next-8
-      # Install monorepo packages
-      npm ci --foreground-scripts
-      # Install CDK exampels dependencies
-      cd examples/cdk
-      npm ci
-      # Install SAM exampels dependencies
-      cd ../sam
-      npm ci
       # Install AWS SAM CLI
       wget https://github.com/aws/aws-sam-cli/releases/latest/download/aws-sam-cli-linux-x86_64.zip
       unzip aws-sam-cli-linux-x86_64.zip -d sam-installation
       sudo ./sam-installation/install
       rm -rf sam-installation aws-sam-cli-linux-*
-      cd ../../
-      # Setup husky hooks
-      npm run init-environment
+      # Install repo dependencies
+      npm run setup-local
 vscode:
   extensions:
     - dbaeumer.vscode-eslint

Diff for: .husky/pre-commit

@@ -1,4 +1,10 @@
 #!/bin/sh
 . "$(dirname "$0")/_/husky.sh"
 
-npm run lerna-lint-fix
+npm run lint-fix -ws
+cd examples/sam && npm run lint-fix
+cd ../..
+cd examples/cdk && npm run lint-fix
+cd ../..
+cd layer-publisher && npm run lint-fix
+cd ..

Diff for: .husky/pre-push

@@ -1,5 +1,4 @@
 #!/bin/sh
 . "$(dirname "$0")/_/husky.sh"
 
-npm run lerna-lint-fix
-npm run test
+npm t -ws

Diff for: CONTRIBUTING.md

@@ -88,7 +88,7 @@ the [eslint extension](https://marketplace.visualstudio.com/items?itemName=dbaeu
 ### Repo Layout
 
 The AWS Lambda Powertools is a npm project written in [TypeScript](https://www.typescriptlang.org/).
-More specifically, it is a [monorepo managed using lerna](https://github.com/lerna/lerna#about).
+More specifically, it is a [monorepo managed using npm workspaces](https://docs.npmjs.com/cli/v8/using-npm/workspaces).
 If you're unfamiliar with any of these technologies, it is useful to learn about them and will make understanding the codebase easier but strictly not necessary for simple contributions.
 
 The repo contains `packages/` directory that contains the Powertools utilities modules. For instance, the source code for the Logger utility can be found at the location `packages/logger` and so on.
@@ -126,9 +126,8 @@ As mentioned before, tests are split into groups thanks to [jest-runner-groups](
 
 To run unit tests, you can either use:
 
-* npm task `lerna-test:unit` (`npm run lerna-test:unit`) in root folder to run them all
-* npm task `test:unit` (`npm run test:unit`) in module folder (for example: `packages/metrics`) to run the module specific ones
-* jest directly `npx jest --group=unit` in module folder to run the module specific ones (You can run selective tests by restricting the group to the one you want. For instance `npx jest --group=unit/metrics/class`)
+* `npm test -ws` while in the root folder to run them all
+* `npm test -w packages/metrics` while in the root folder to run the module specific ones
 
 #### e2e tests
 
@@ -156,9 +155,8 @@ See `metrics/tests/e2e/basicFeatures.decorator.test.ts` as an example.
 
 To run e2e tests, you can either use:
 
-* npm task `lerna-test:e2e` (`npm run lerna-test:e2e`) in root folder
-* npm task `test:e2e` (`npm run test:e2e`) in module folder (for example: `packages/metrics`) to run the module specific ones
-* jest directly `npx jest --group=e2e` in module folder. (You can run selective tests by restricting the group to the one you want. For instance `npx jest --group=e2e/metrics/decorator`)
+* `npm test:e2e -ws` while in the root folder to run them all
+* `npm test:e2e -w packages/metrics` while in the root folder to run the module specific ones
 
 Three important environment variables can be used:
 
@@ -200,7 +198,7 @@ As part of the repo you will find an examples folder at the root. This folder co
 
 To test your updates with these examples, you just have to:
 
-1. Build your local version of *aws-lambda-powertools-typescript* npm packages with `npm run lerna-package` while in the root folder
+1. Build your local version of *aws-lambda-powertools-typescript* npm packages with `npm run package -ws` while in the root folder
 2. Move to the examples folder of your choice
     ```sh
     cd packages/examples/cdk

Diff for: examples/cdk/.eslintrc.js

@@ -0,0 +1,67 @@
+module.exports = {
+  env: {
+    browser: false,
+    es2020: true,
+    jest: true,
+    node: true,
+  },
+  extends: [ 'plugin:@typescript-eslint/eslint-recommended', 'plugin:@typescript-eslint/recommended' ],
+  parser: '@typescript-eslint/parser',
+  plugins: ['@typescript-eslint'],
+  settings: {
+    'import/resolver': {
+      node: {},
+      typescript: {
+        project: './tsconfig.es.json',
+        alwaysTryTypes: true,
+      },
+    },
+  },
+  rules: {
+    '@typescript-eslint/ban-ts-ignore': ['off'],
+    '@typescript-eslint/camelcase': ['off'],
+    '@typescript-eslint/explicit-function-return-type': [ 'error', { allowExpressions: true } ],
+    '@typescript-eslint/explicit-member-accessibility': 'error',
+    '@typescript-eslint/indent': [ 'error', 2, { SwitchCase: 1 } ],
+    '@typescript-eslint/interface-name-prefix': ['off'],
+    '@typescript-eslint/member-delimiter-style': [ 'error', { multiline: { delimiter: 'none' } } ],
+    '@typescript-eslint/member-ordering': [
+      'error',
+      {
+        default: {
+          memberTypes: [
+            'signature',
+            'public-field', // = ["public-static-field", "public-instance-field"]
+            'protected-field', // = ["protected-static-field", "protected-instance-field"]
+            'private-field', // = ["private-static-field", "private-instance-field"]
+            'constructor',
+            'public-method', // = ["public-static-method", "public-instance-method"]
+            'protected-method', // = ["protected-static-method", "protected-instance-method"]
+            'private-method', // = ["private-static-method", "private-instance-method"]
+          ],
+          order: 'alphabetically',
+        },
+      },
+    ],
+    '@typescript-eslint/no-explicit-any': 'error',
+    '@typescript-eslint/no-inferrable-types': ['off'],
+    '@typescript-eslint/no-unused-vars': [ 'error', { argsIgnorePattern: '^_' } ],
+    '@typescript-eslint/no-use-before-define': ['off'],
+    '@typescript-eslint/semi': [ 'error', 'always' ],
+    'array-bracket-spacing': [ 'error', 'always', { singleValue: false } ],
+    'arrow-body-style': [ 'error', 'as-needed' ],
+    'computed-property-spacing': [ 'error', 'never' ],
+    'func-style': [ 'warn', 'expression' ],
+    indent: [ 'error', 2, { SwitchCase: 1 } ],
+    'keyword-spacing': 'error',
+    'newline-before-return': 2,
+    'no-console': 0,
+    'no-multi-spaces': [ 'error', { ignoreEOLComments: false } ],
+    'no-multiple-empty-lines': [ 'error', { max: 1, maxBOF: 0 } ],
+    'no-throw-literal': 'error',
+    'object-curly-spacing': [ 'error', 'always' ],
+    'prefer-arrow-callback': 'error',
+    quotes: [ 'error', 'single', { allowTemplateLiterals: true } ],
+    semi: [ 'error', 'always' ]
+  },
+};

Diff for: examples/cdk/.gitignore

@@ -1,4 +1,5 @@
 *.js
+!.eslintrc.js
 !jest.config.js
 *.d.ts
 node_modules