H-3762, H-3763, H-3757: Experiment with biome (#6031)

.github/renovate.json

@@ -78,6 +78,7 @@
         "/markdownlint-cli2/",
         "/^prettier/",
         "/prettier$/",
+        "/^@biomejs/",
         "/rimraf/",
         "/turbo/",
         "/yarn-deduplicate/",
@@ -220,10 +221,10 @@
       "matchPackageNames": ["/^@playwright//", "/^playwright/", "/playwright$/"]
     },
     {
-      "groupName": "`prettier` npm packages",
+      "groupName": "`biome` npm packages",
       "matchManagers": ["npm"],
       "dependencyDashboardApproval": false,
-      "matchPackageNames": ["/^prettier/", "/prettier$/"]
+      "matchPackageNames": ["/^@biomejs/"]
     },
     {
       "groupName": "`prosemirror` npm packages",

.github/workflows/lint.yml

@@ -213,7 +213,7 @@ jobs:
       - name: Validate package.json generated from Cargo.toml
         if: ${{ success() || failure() }}
         run: |
-          cargo -Zscript run --manifest-path ".github/scripts/rust/sync-turborepo.rs" . | xargs yarn prettier --write >/dev/null
+          cargo -Zscript run --manifest-path ".github/scripts/rust/sync-turborepo.rs" . | xargs yarn fix:package-json
           git --no-pager diff --exit-code --color '**/package.json'
 
       - name: Run yarn lint:constraints
@@ -255,14 +255,26 @@ jobs:
             exit 1
           fi
 
-      - name: Run yarn lint:prettier
+      - name: Run yarn lint:format
         if: ${{ success() || failure() }}
         run: |
-          if ! yarn lint:prettier; then
+          if ! yarn lint:format; then
             echo ''
             echo ''
             echo 'ℹ️ ℹ️ ℹ️'
-            echo 'Try running `yarn fix:prettier` locally to apply autofixes.'
+            echo 'Try running `yarn fix:biome` locally to apply autofixes.'
+            echo 'ℹ️ ℹ️ ℹ️'
+            exit 1
+          fi
+
+      - name: Run yarn lint:package-json
+        if: ${{ success() || failure() }}
+        run: |
+          if ! yarn lint:package-json; then
+            echo ''
+            echo ''
+            echo 'ℹ️ ℹ️ ℹ️'
+            echo 'Try running `yarn fix:package-json` locally to apply autofixes.'
             echo 'ℹ️ ℹ️ ℹ️'
             exit 1
           fi
@@ -279,9 +291,6 @@ jobs:
             exit 1
           fi
 
-        ## TODO: Replace with `yarn fix:yarn-dedupe` after upgrading to Yarn v3+
-        ## https://yarnpkg.com/cli/dedupe
-        ## https://github.com/yarnpkg/berry/issues/2297
       - name: Run yarn lint:yarn-deduplicate
         if: ${{ success() || failure() }}
         run: |

.gitignore

@@ -1,6 +1,5 @@
 #########################
 ## Keep in sync with
-##  - .prettierignore
 ##  - .dockerignore
 #########################
 

.justfile

@@ -135,7 +135,7 @@ lint:
 # Sync the package.json files to the `Cargo.toml` file
 [no-cd]
 sync-turborepo:
-  @cargo -Zscript run --manifest-path "{{repo}}/.github/scripts/rust/sync-turborepo.rs" "{{repo}}" | xargs just yarn prettier --write
+    @cargo -Zscript run --manifest-path "{{repo}}/.github/scripts/rust/sync-turborepo.rs" "{{repo}}" | xargs just yarn fix:package-json
 
 # Format the code using `rustfmt`
 [no-cd]

.lefthook.yml

@@ -7,32 +7,32 @@ pre-commit:
     - rebase
   commands:
     markdownlint:
-      tags: frontend style
+      tags: [frontend, style]
       glob: "*.md"
       run: yarn run markdownlint-cli2 --fix --no-globs {staged_files} || true
       stage_fixed: true
-    prettier:
-      tags: frontend style
+    biome:
+      tags: [frontend, style]
       glob: "*.{cjs,css,js,json,md,mdx,mjs,scss,ts,tsx,yml}"
-      run: yarn run prettier --write {staged_files} || true
+      run: yarn run biome format --write --staged || true
       stage_fixed: true
     yarn:
-      tags: frontend style
+      tags: [frontend, style]
       glob: "{*/package.json, package.json}"
-      run: yarn fix:constraints && yarn fix:yarn-deduplicate
+      run: yarn fix:constraints && yarn fix:yarn-deduplicate && yarn fix:package-json {staged_files}
       stage_fixed: true
     sqlfluff:
-      tags: backend style
+      tags: [backend, style]
       glob: "*.sql"
       run: sqlfluff fix {staged_files} || true
       stage_fixed: true
     rust:
-      tags: backend style
+      tags: [backend, style]
       glob: "*.rs"
       run: cargo fmt -- {staged_files} || true
       stage_fixed: true
     toml:
-      tags: backend style
+      tags: [backend, style]
       glob: "*.toml"
       run: yarn run taplo format {staged_files} || true
       stage_fixed: true

.markdownlint-cli2.jsonc

@@ -8,7 +8,7 @@
       "ol_multi": 1,
       "ol_single": 1,
       "ul_multi": 1,
-      "ul_single": 1,
+      "ul_single": 1
     },
     "no-alt-text": false,
     "no-bare-urls": false,
@@ -17,9 +17,9 @@
     "no-inline-html": false,
     "no-trailing-punctuation": false,
     "ol-prefix": { "style": "one" },
-    "single-title": false,
+    "single-title": false
   },
   "gitignore": true,
   "globs": ["*.md", "**/*.md"],
-  "ignores": ["**/LICENSE*.md"],
+  "ignores": ["**/LICENSE*.md"]
 }

.vscode/extensions.json

@@ -3,12 +3,12 @@
     "Codecov.codecov",
     "davidanson.vscode-markdownlint",
     "dbaeumer.vscode-eslint",
-    "esbenp.prettier-vscode",
     "GraphQL.vscode-graphql",
     "GraphQL.vscode-graphql-syntax",
     "hashicorp.terraform",
     "ms-playwright.playwright",
     "ms-vscode.vscode-typescript-next",
-    "vitest.explorer"
+    "vitest.explorer",
+    "biomejs.biome"
   ]
 }

.zed/settings.json

@@ -0,0 +1,18 @@
+// Folder-specific settings
+//
+// For a full list of overridable settings, and general information on folder-specific settings,
+// see the documentation: https://zed.dev/docs/configuring-zed#settings-files
+{
+  "file_types": {
+    "TOML": [".sqlfluff"],
+    "JSONC": ["turbo.json"]
+  },
+  "auto_install_extensions": {
+    "biome": true
+  },
+  "formatter": {
+    "language_server": {
+      "name": "biome"
+    }
+  }
+}

apps/hash-api/codegen.config.ts

@@ -18,7 +18,7 @@ const config: CodegenConfig = {
         "../../libs/@local/hash-isomorphic-utils/src/graphql/queries/**/*.ts",
       ],
       hooks: {
-        afterOneFileWrite: ["prettier --write"],
+        afterOneFileWrite: ["biome format --write --vcs-use-ignore-file=false"],
       },
       config: {
         avoidOptionals: {