chore(maintenance): remove eslint & prettier

.devcontainer/devcontainer.json

@@ -14,8 +14,7 @@
   "customizations": {
     // Add the ids of extensions you want installed when the container is created.
     "extensions": [
-      "dbaeumer.vscode-eslint",
-      "esbenp.prettier-vscode",
+      "biomejs.biome",
       "firsttris.vscode-jest-runner"
     ],
     "vscode": {

.github/boring-cyborg.yml

@@ -95,8 +95,7 @@ labelPRBasedOnFilePath:
     - LICENSE-THIRD-PARTY
     - lerna.json
     - .nvmrc
-    - .eslintrc.cjs
-    - .eslintignore
+    - .biome.json
     - .npmignore
     - .gitpod.yml
     - .husky/*

.gitpod.yml

@@ -9,6 +9,5 @@ tasks:
       npm run setup-local
 vscode:
   extensions:
-    - dbaeumer.vscode-eslint
-    - esbenp.prettier-vscode
+    - biomejs.biome
     - firsttris.vscode-jest-runner

CONTRIBUTING.md

@@ -126,7 +126,7 @@ You might find useful to run both the documentation website and the API referenc
 | Category              | Convention                                                                                                                                                                                                                                                                  |
 | --------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | **Docstring**         | We use [TypeDoc](https://typedoc.org) annotations to help generate more readable API references. For public APIs, we always include at least one **Example** to ease everyone's experience when using an IDE.                                                               |
-| **Style guide**       | We use [Eslint](https://eslint.org) and [Prettier](https://prettier.io) to enforce beyond good practices. We use TypeScript types, function return types, and access modifiers to convey intent.                                                                            |
+| **Style guide**       | We use [Biome](http://biomejs.dev) to enforce style and format beyond good practices. We use TypeScript types, function return types, and access modifiers to convey intent.                                                                            |
 | **Core utilities**    | Core utilities always accept `serviceName` as a constructor parameter, can work in isolation, and are also available in other languages implementation.                                                                                                                     |
 | **Utilities**         | Utilities are not as strict as core and focus on community needs: development productivity, industry leading practices, etc. Both core and general utilities follow our [Tenets](https://docs.powertools.aws.dev/lambda/typescript/#tenets).                                |
 | **Errors**            | Specific errors thrown by Powertools live within utilities themselves and use `Error` suffix e.g. `IdempotencyKeyError`.                                                                                                                                                    |

docs/contributing/conventions.md

@@ -14,7 +14,7 @@ As we gather more concrete examples, this page will have one section for each ca
 | Category              | Convention                                                                                                                                                                                                                                                                                   |
 | --------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | **Docstring**         | We use [TypeDoc](https://typedoc.org){target="_blank"} annotations to help generate more readable API references. For public APIs, we always include at least one **Example** to ease everyone's experience when using an IDE.                                                               |
-| **Style guide**       | We use [Eslint](https://eslint.org){target="_blank"} and [Prettier](https://prettier.io){target="_blank"} to enforce beyond good practices. We use TypeScript types, function return types, and access modifiers to convey intent.                                                           |
+| **Style guide**       | We use [Biome](http://biomejs.dev){target="_blank"} for linting and formatting to enforce beyond good practices. We use TypeScript types, function return types, and access modifiers to convey intent.                                                           |
 | **Core utilities**    | Core utilities always accept `serviceName` as a constructor parameter, can work in isolation, and are also available in other languages implementation.                                                                                                                                      |
 | **Utilities**         | Utilities are not as strict as core and focus on community needs: development productivity, industry leading practices, etc. Both core and general utilities follow our [Tenets](https://docs.powertools.aws.dev/lambda/typescript/#tenets){target="_blank"}.                                |
 | **Errors**            | Specific errors thrown by Powertools live within utilities themselves and use `Error` suffix e.g. `IdempotencyKeyError`.                                                                                                                                                                     |

examples/app/functions/commons/helpers/utils.ts

@@ -9,7 +9,6 @@
  *
  * @param error The value to assert is an error
  */
-// eslint-disable-next-line func-style -- type assertions cannot use arrow functions microsoft/TypeScript#34523
 function assertIsError(error: unknown): asserts error is Error {
   if (!(error instanceof Error)) {
     throw error;

layers/tests/e2e/layerPublisher.test.ts

@@ -23,7 +23,6 @@ import {
 
 jest.spyOn(console, 'log').mockImplementation();
 
-// eslint-disable-next-line func-style -- type assertions can't be arrow functions
 function assertLogs(
   logs: TestInvocationLogs | undefined
 ): asserts logs is TestInvocationLogs {