Scaffold workspaces

![image](https://github.com/facebook/react-forget/assets/1390709/bb27e33f-6a88-4b71-8ce2-aeb8db0372f7) 

This is an attempt to scaffold yarn workspaces into our repo with as minimal as 
possible changes to our current setup and directory structure. Essentially this 
PR moves current `src` into `packages/babel-plugin-react-forget` as a first step 
to keep everything working. Later on when we're ready we can split out a 
`react-compiler` package that is decoupled from Babel, but it's too early for 
that now

compiler/.github/workflows/ci.yml

@@ -17,15 +17,13 @@ jobs:
           cache-dependency-path: forget/yarn.lock
       - run: yarn install --immutable --immutable-cache
         working-directory: forget
-      - run: yarn prettier:ci
+      - run: yarn workspace babel-plugin-react-forget run prettier:ci
         working-directory: forget
-      - run: yarn build
+      - run: yarn workspace babel-plugin-react-forget run build
         working-directory: forget
-      - run: yarn lint
+      - run: yarn workspace babel-plugin-react-forget run lint
         working-directory: forget
-      - run: yarn test
+      - run: yarn workspace babel-plugin-react-forget run test
         working-directory: forget
-      - run: yarn install --immutable --immutable-cache
-        working-directory: forget/packages/snap
-      - run: yarn snap:build && yarn snap
+      - run: yarn workspace babel-plugin-react-forget run snap:build && yarn workspace babel-plugin-react-forget run snap
         working-directory: forget

compiler/.github/workflows/test262.yml

@@ -18,7 +18,7 @@ jobs:
           cache-dependency-path: forget/yarn.lock
       - run: yarn install --immutable --immutable-cache
         working-directory: forget
-      - run: yarn build
+      - run: yarn workspace babel-plugin-react-forget run build
         working-directory: forget
       - id: test262
         name: Run test262

compiler/forget/package.json

@@ -1,80 +1,23 @@
 {
-  "name": "babel-plugin-react-forget",
-  "version": "0.0.1",
-  "description": "Babel plugin for React Forget.",
-  "main": "dist/index.js",
-  "license": "MIT",
-  "files": [
-    "src"
-  ],
-  "scripts": {
-    "build": "rimraf dist && tsc",
-    "bundle:meta": "scripts/bundle-meta.sh",
-    "dev": "concurrently --kill-others \"tsc --watch\" \"yarn:playground\"",
-    "hash": "scripts/hash-dist.sh",
-    "playground": "cd packages/playground && yarn && yarn dev",
-    "test": "tsc && jest",
-    "snap": "node packages/snap/dist/main.js",
-    "snap:build": "cd packages/snap && yarn build",
-    "ts:analyze-trace": "scripts/ts-analyze-trace.sh",
-    "test262": "yarn run --silent test262-harness --preprocessor=scripts/test262-preprocessor.js",
-    "test262:all": "yarn run --silent test262 'test262/test/**/*.js'",
-    "test262:ci": "scripts/test262.sh",
-    "prettier": "node ./scripts/prettier.js write-changed",
-    "prettier:all": "node ./scripts/prettier.js write",
-    "prettier:ci": "prettier --check .",
-    "lint": "yarn eslint src"
+  "private": true,
+  "workspaces": {
+    "packages": ["packages/*"],
+    "nohoist": ["**/next", "**/next/**"]
   },
   "repository": {
     "type": "git",
     "url": "git+https://github.com/facebook/react-forget.git"
   },
-  "dependencies": {
-    "@babel/generator": "7.2.0",
-    "@babel/plugin-syntax-jsx": "^7.18.6",
-    "@babel/types": "^7.19.0",
-    "chalk": "4",
-    "invariant": "^2.2.4",
-    "prettier": "2.7.1",
-    "pretty-format": "^24"
+  "scripts": {
+    "start": "yarn workspace playground run start",
+    "next": "yarn workspace playground run dev",
+    "build": "yarn workspaces run build",
+    "dev": "concurrently --kill-others \"yarn workspace babel-plugin-react-forget run tsc --watch\" \"yarn workspace playground run dev\"",
+    "snap": "yarn workspace babel-plugin-react-forget run snap",
+    "snap:build": "yarn workspace snap run build"
   },
+  "dependencies": {},
   "devDependencies": {
-    "@babel/core": "^7.19.1",
-    "@babel/parser": "^7.19.1",
-    "@babel/plugin-syntax-typescript": "^7.18.6",
-    "@babel/plugin-transform-block-scoping": "^7.18.9",
-    "@babel/plugin-transform-modules-commonjs": "^7.18.6",
-    "@babel/preset-react": "^7.18.6",
-    "@babel/preset-typescript": "^7.18.6",
-    "@babel/traverse": "^7.19.1",
-    "@testing-library/react": "^13.4.0",
-    "@tsconfig/node16-strictest": "^1.0.3",
-    "@types/glob": "^8.1.0",
-    "@types/invariant": "^2.2.35",
-    "@types/jest": "^29.0.3",
-    "@types/node": "^18.7.18",
-    "@typescript-eslint/eslint-plugin": "^5.51.0",
-    "@typescript-eslint/parser": "^5.51.0",
-    "babel-jest": "^29.0.3",
-    "babel-plugin-fbt": "^1.0.0",
-    "babel-plugin-fbt-runtime": "^1.0.0",
-    "concurrently": "^7.4.0",
-    "eslint": "^8.33.0",
-    "glob": "^7.1.6",
-    "jest": "^29.0.3",
-    "jest-environment-jsdom": "^29.0.3",
-    "react": "^18.2.0",
-    "react-dom": "^18.2.0",
-    "rimraf": "^3.0.2",
-    "test262-harness": "^8.0.0",
-    "ts-jest": "^29.0.1",
-    "ts-node": "^10.9.1",
-    "typescript": "^5.1.0"
-  },
-  "resolutions": {
-    "./**/@babel/parser": "7.7.4",
-    "./**/@babel/types": "7.7.4",
-    "@babel/core": "7.2.0",
-    "@babel/traverse": "7.1.6"
+    "concurrently": "^7.4.0"
   }
 }

compiler/forget/packages/babel-plugin-react-forget/.eslintrc.js

@@ -65,7 +65,7 @@ module.exports = {
   parser: "@typescript-eslint/parser",
   plugins: ["@typescript-eslint"],
   root: true,
-  ignorePatterns: ["src/__tests__/**/*", "src/**/*.d.ts", "packages/**/*"],
+  ignorePatterns: ["src/__tests__/**/*", "src/**/*.d.ts"],
 
   // If rules need to be disabled then the rule is insufficiently high signal
   // and should be diasbled altogether or customized (in either case via a standalone PR)

compiler/forget/packages/babel-plugin-react-forget/.prettierignore

@@ -0,0 +1,5 @@
+**/dist
+**/__tests__/fixtures/**/*.expect.md
+**/__tests__/fixtures/**/*.flow.js
+*.md
+*.json

compiler/forget/packages/babel-plugin-react-forget/package.json

@@ -0,0 +1,73 @@
+{
+  "name": "babel-plugin-react-forget",
+  "version": "0.0.1",
+  "description": "Babel plugin for React Forget.",
+  "main": "dist/index.js",
+  "license": "MIT",
+  "files": [
+    "src"
+  ],
+  "scripts": {
+    "build": "rimraf dist && tsc",
+    "bundle:meta": "scripts/bundle-meta.sh",
+    "hash": "scripts/hash-dist.sh",
+    "test": "tsc && jest",
+    "snap": "node ../snap/dist/main.js",
+    "snap:build": "yarn workspace snap run build",
+    "ts:analyze-trace": "scripts/ts-analyze-trace.sh",
+    "test262": "yarn run --silent test262-harness --preprocessor=scripts/test262-preprocessor.js",
+    "test262:all": "yarn run --silent test262 '../../test262/test/**/*.js'",
+    "test262:ci": "scripts/test262.sh",
+    "prettier": "node ./scripts/prettier.js write-changed",
+    "prettier:all": "node ./scripts/prettier.js write",
+    "prettier:ci": "prettier --check .",
+    "lint": "yarn eslint src"
+  },
+  "dependencies": {
+    "@babel/generator": "7.2.0",
+    "@babel/plugin-syntax-jsx": "^7.18.6",
+    "@babel/types": "^7.19.0",
+    "chalk": "4",
+    "invariant": "^2.2.4",
+    "prettier": "2.7.1",
+    "pretty-format": "^24"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.19.1",
+    "@babel/parser": "^7.19.1",
+    "@babel/plugin-syntax-typescript": "^7.18.6",
+    "@babel/plugin-transform-block-scoping": "^7.18.9",
+    "@babel/plugin-transform-modules-commonjs": "^7.18.6",
+    "@babel/preset-react": "^7.18.6",
+    "@babel/preset-typescript": "^7.18.6",
+    "@babel/traverse": "^7.19.1",
+    "@testing-library/react": "^13.4.0",
+    "@tsconfig/node16-strictest": "^1.0.3",
+    "@types/glob": "^8.1.0",
+    "@types/invariant": "^2.2.35",
+    "@types/jest": "^29.0.3",
+    "@types/node": "^18.7.18",
+    "@typescript-eslint/eslint-plugin": "^5.51.0",
+    "@typescript-eslint/parser": "^5.51.0",
+    "babel-jest": "^29.0.3",
+    "babel-plugin-fbt": "^1.0.0",
+    "babel-plugin-fbt-runtime": "^1.0.0",
+    "eslint": "^8.33.0",
+    "glob": "^7.1.6",
+    "jest": "^29.0.3",
+    "jest-environment-jsdom": "^29.0.3",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
+    "rimraf": "^3.0.2",
+    "test262-harness": "^8.0.0",
+    "ts-jest": "^29.0.1",
+    "ts-node": "^10.9.1",
+    "typescript": "^5.1.0"
+  },
+  "resolutions": {
+    "./**/@babel/parser": "7.7.4",
+    "./**/@babel/types": "7.7.4",
+    "@babel/core": "7.2.0",
+    "@babel/traverse": "7.1.6"
+  }
+}

compiler/forget/packages/babel-plugin-react-forget/scripts/test262.sh

@@ -3,11 +3,11 @@ set -eo pipefail
 
 TMPFILE=$(mktemp /tmp/forget-test262-XXXXX)
 
-yarn run --silent test262-harness \
+yarn workspace babel-plugin-react-forget run --silent test262-harness \
   --threads=10 \
   --preprocessor=scripts/test262-preprocessor.js \
   --reporter=json \
   --reporter-keys=file,result \
-  'test262/test/**/*.js' >> $TMPFILE
+  '../../test262/test/**/*.js' >> $TMPFILE
 
 jq '. | group_by(.result.pass,.result.message) | map({"pass": .[0].result.pass, "message": .[0].result.message, "count": length}) | tostring' $TMPFILE

compiler/forget/packages/babel-plugin-react-forget/src/CompilerError.ts

@@ -5,10 +5,10 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import { Node, NodePath } from "@babel/traverse";
-import { SourceLocation as BabelSourceLocation } from "@babel/types";
-import { SourceLocation } from "./HIR";
-import { ExtractClassProperties } from "./Utils/types";
+import type { Node, NodePath } from "@babel/traverse";
+import type { SourceLocation as BabelSourceLocation } from "@babel/types";
+import type { SourceLocation } from "./HIR";
+import type { ExtractClassProperties } from "./Utils/types";
 import { assertExhaustive } from "./Utils/utils";
 
 export enum ErrorSeverity {

compiler/forget/packages/babel-plugin-react-forget/src/HIR/FindContextIdentifiers.ts

@@ -1,5 +1,5 @@
-import { NodePath } from "@babel/traverse";
-import * as t from "@babel/types";
+import type { NodePath } from "@babel/traverse";
+import type * as t from "@babel/types";
 import { CompilerError } from "../CompilerError";
 import { GeneratedSource } from "./HIR";
 
@@ -30,7 +30,7 @@ export function findContextIdentifiers(
           state.currentLambda.push(fn);
         },
         exit(
-          fn: NodePath<t.FunctionExpression>,
+          _fn: NodePath<t.FunctionExpression>,
           state: FindContextIdentifierState
         ): void {
           state.currentLambda.pop();
@@ -45,7 +45,7 @@ export function findContextIdentifiers(
           state.currentLambda.push(fn);
         },
         exit(
-          fn: NodePath<t.ArrowFunctionExpression>,
+          _fn: NodePath<t.ArrowFunctionExpression>,
           state: FindContextIdentifierState
         ): void {
           state.currentLambda.pop();