feat(eslint): support turbo.json workspace configs (vercel#3846)

Support turbo.json workspace configs. 

Still to do:
- [x] Support workspace specific linting

There exists one edge case here, if a user forgets to add an "extend" to workspace config, we _can_ treat it as root. I punted on this one for now since it's not this packages domain to solve that (at the moment)

packages/eslint-plugin-turbo/__tests__/cwd.test.ts

@@ -25,7 +25,7 @@ describe("eslint settings check", () => {
       cwd,
       encoding: "utf8",
     });
-    const configJson = JSON.parse(configString);
+    const configJson = JSON5.parse(configString);
 
     expect(configJson.settings).toEqual({
       turbo: { envVars: ["CI", "UNORDERED"] },
@@ -38,7 +38,7 @@ describe("eslint settings check", () => {
       cwd,
       encoding: "utf8",
     });
-    const configJson = JSON.parse(configString);
+    const configJson = JSON5.parse(configString);
 
     expect(configJson.settings).toEqual({
       turbo: { envVars: ["CI", "UNORDERED"] },
@@ -82,13 +82,13 @@ describe("eslint cache is busted", () => {
     try {
       execSync(`eslint --format=json child.js`, { cwd, encoding: "utf8" });
     } catch (error: any) {
-      const outputJson = JSON.parse(error.stdout);
+      const outputJson = JSON5.parse(error.stdout);
       expect(outputJson).toMatchObject([
         {
           messages: [
             {
               message:
-                "$NONEXISTENT is not listed as a dependency in turbo.json",
+                "$NONEXISTENT is not listed as a dependency in any turbo.json",
             },
           ],
         },
@@ -105,7 +105,7 @@ describe("eslint cache is busted", () => {
       cwd,
       encoding: "utf8",
     });
-    const outputJson = JSON.parse(output);
+    const outputJson = JSON5.parse(output);
     expect(outputJson).toMatchObject([{ errorCount: 0 }]);
   });
 });

packages/eslint-plugin-turbo/__tests__/fixtures/configs/single/turbo.json

@@ -0,0 +1,39 @@
+{
+  "globalEnv":[
+    "NEW_STYLE_GLOBAL_ENV_KEY",
+    "$NEW_STYLE_GLOBAL_ENV_KEY"
+  ],
+  "globalDependencies":[
+    "$GLOBAL_ENV_KEY"
+  ],
+  "pipeline":{
+    "test":{
+      "outputs":[
+        "coverage/**"
+      ],
+      "dependsOn":[
+        "^build"
+      ]
+    },
+    "lint":{
+      "outputs":[]
+    },
+    "dev":{
+      "cache":false
+    },
+    "build":{
+      "outputs":[
+        "dist/**/*",
+        ".next/**/*"
+      ],
+      "env":[
+        "NEW_STYLE_ENV_KEY"
+      ],
+      "dependsOn":[
+        "^build",
+        "$TASK_ENV_KEY",
+        "$ANOTHER_ENV_KEY"
+      ]
+    }
+  }
+}

packages/eslint-plugin-turbo/__tests__/fixtures/workspace-configs/apps/docs/index.js

@@ -0,0 +1,6 @@
+export default function docs() {
+  if (process.env.ENV_1 === undefined) {
+    return 'does not exist';
+  }
+  return 'exists'
+}

packages/eslint-plugin-turbo/__tests__/fixtures/workspace-configs/apps/docs/package.json

@@ -0,0 +1,4 @@
+{
+  "name": "docs",
+  "version": "1.0.0"
+}

packages/eslint-plugin-turbo/__tests__/fixtures/workspace-configs/apps/web/index.js

@@ -0,0 +1,6 @@
+export default function web() {
+  if (!process.env.ENV_2) {
+    return 'bar';
+  }
+  return 'foo'
+}

packages/eslint-plugin-turbo/__tests__/fixtures/workspace-configs/apps/web/package.json

@@ -0,0 +1,4 @@
+{
+  "name": "web",
+  "version": "1.0.0"
+}

packages/eslint-plugin-turbo/__tests__/fixtures/workspace-configs/apps/web/turbo.json

@@ -0,0 +1,9 @@
+{
+  "$schema": "https://turbo.build/schema.json",
+  "extends": ["//"],
+  "pipeline": {
+    "build": {
+      "env": ["ENV_2"]
+    }
+  }
+}

packages/eslint-plugin-turbo/__tests__/fixtures/workspace-configs/package.json

@@ -0,0 +1,14 @@
+{
+  "private": true,
+  "workspaces": [
+    "apps/*",
+    "packages/*"
+  ],
+  "scripts": {
+    "build": "turbo run build"
+  },
+  "devDependencies": {
+    "turbo": "latest"
+  },
+  "packageManager": "[email protected]"
+}

packages/eslint-plugin-turbo/__tests__/fixtures/workspace-configs/packages/ui/index.js

@@ -0,0 +1,6 @@
+export default function foo() {
+  if (!process.env.IS_SERVER) {
+    return 'bar';
+  }
+  return 'foo'
+}

packages/eslint-plugin-turbo/__tests__/fixtures/workspace-configs/packages/ui/package.json

@@ -0,0 +1,4 @@
+{
+  "name": "ui",
+  "version": "1.0.0"
+}

packages/eslint-plugin-turbo/__tests__/fixtures/workspace-configs/packages/ui/turbo.json

@@ -0,0 +1,9 @@
+{
+  "$schema": "https://turbo.build/schema.json",
+  "extends": ["//"],
+  "pipeline": {
+    "build": {
+      "env": ["IS_SERVER"]
+    }
+  }
+}

packages/eslint-plugin-turbo/__tests__/fixtures/workspace-configs/turbo.json

@@ -0,0 +1,9 @@
+{
+  "$schema": "https://turbo.build/schema.json",
+  "globalEnv": ["CI"],
+  "pipeline": {
+    "build": {
+      "env": ["ENV_1"]
+    }
+  }
+}