clean: remove all Flow deps, scripts, config, CI, etc

- remove Flow dep and .flowconfig
- remove Flow scripts from package.json and ci.yml
- remove Babel config and Babel plugin

- ESLint plugin is required by eslint-plugin-babel, so cannot be removed

.github/workflows/ci.yml

@@ -50,8 +50,6 @@ jobs:
         run: yarn install
       - name: Lint
         run: yarn lint
-      - name: Flow
-        run: yarn flow
       - name: TSCheck
         run: yarn tscheck
       - name: Check compat-data

CONTRIBUTING.md

@@ -40,14 +40,6 @@ $ yarn lint
 
 #### Type-check
 
-To run Flow type-checking, run:
-
-```sh
-$ yarn flow
-```
-
-To run TypeScript type-checking, run:
-
 ```sh
 $ yarn tscheck
 ```

babel.config.json

@@ -2,7 +2,6 @@
   "sourceType": "unambiguous",
   "presets": [
     ["@babel/preset-env", { "loose": true }],
-    "@babel/preset-flow",
     "@babel/preset-typescript"
   ],
   "plugins": ["./scripts/babel-plugin-remove-create-require"],

package.json

@@ -8,13 +8,12 @@
     "build-es-shims-data": "./scripts/download-compat-table.sh && node ./scripts/build-es-shims-data",
     "clean": "rimraf packages/*/lib packages/*/esm",
     "clean-all": "yarn clean && rimraf packages/*/node_modules node_modules",
-    "flow": "flow check --strip-root",
     "lint": "eslint packages '*.{js,ts}' --ext .js,.ts --format=codeframe",
     "publish": "yarn clean && NODE_ENV=production yarn build && yarn validate && lerna publish from-git",
     "test": "jest && yarn test:esm",
     "test:esm": "node test/esm/index.mjs",
     "tscheck": "yarn tsc",
-    "validate": "yarn lint && yarn flow && yarn tscheck && yarn test",
+    "validate": "yarn lint && yarn tscheck && yarn test",
     "watch": "gulp watch"
   },
   "devDependencies": {
@@ -24,7 +23,6 @@
     "@babel/eslint-plugin-development": "^7.17.7",
     "@babel/plugin-transform-runtime": "^7.17.0",
     "@babel/preset-env": "^7.16.11",
-    "@babel/preset-flow": "^7.16.7",
     "@babel/preset-typescript": "^7.16.7",
     "@babel/runtime": "^7.17.8",
     "@rollup/plugin-babel": "^5.3.0",
@@ -42,7 +40,6 @@
     "eslint-plugin-import": "^2.17.2",
     "eslint-plugin-prettier": "^3.1.0",
     "fancy-log": "^1.3.3",
-    "flow-bin": "^0.107.0",
     "gulp": "^4.0.2",
     "gulp-babel": "^8.0.0",
     "gulp-newer": "^1.0.0",

yarn.lock

@@ -735,17 +735,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@babel/plugin-syntax-flow@npm:^7.16.7":
-  version: 7.16.7
-  resolution: "@babel/plugin-syntax-flow@npm:7.16.7"
-  dependencies:
-    "@babel/helper-plugin-utils": ^7.16.7
-  peerDependencies:
-    "@babel/core": ^7.0.0-0
-  checksum: b1ab0bd9b78e4aa5fb48714d6514f3d08d72693807c6044a5be4f301a9bb677b5648fbdae11c8bc93923da6b320a1898560c307933021bdb75ee39e577ed74ee
-  languageName: node
-  linkType: hard
-
 "@babel/plugin-syntax-json-strings@npm:^7.8.3":
   version: 7.8.3
   resolution: "@babel/plugin-syntax-json-strings@npm:7.8.3"
@@ -977,18 +966,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@babel/plugin-transform-flow-strip-types@npm:^7.16.7":
-  version: 7.16.7
-  resolution: "@babel/plugin-transform-flow-strip-types@npm:7.16.7"
-  dependencies:
-    "@babel/helper-plugin-utils": ^7.16.7
-    "@babel/plugin-syntax-flow": ^7.16.7
-  peerDependencies:
-    "@babel/core": ^7.0.0-0
-  checksum: 4b4801c91d805d95957781e537f88e9f34c7f8a4c262c4d230af2ab7a920889c542860e505149a856d4c16916ffb02df4f3af161733adeedb7671555d1510bba
-  languageName: node
-  linkType: hard
-
 "@babel/plugin-transform-for-of@npm:^7.16.7":
   version: 7.16.7
   resolution: "@babel/plugin-transform-for-of@npm:7.16.7"
@@ -1359,19 +1336,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@babel/preset-flow@npm:^7.16.7":
-  version: 7.16.7
-  resolution: "@babel/preset-flow@npm:7.16.7"
-  dependencies:
-    "@babel/helper-plugin-utils": ^7.16.7
-    "@babel/helper-validator-option": ^7.16.7
-    "@babel/plugin-transform-flow-strip-types": ^7.16.7
-  peerDependencies:
-    "@babel/core": ^7.0.0-0
-  checksum: b73c743a6bdfb51fe907adbc425a82469145ea15f32b43096804e28ba30921c4ac3199f86e11d1cefbce95c3a5404aaf3534152f5a12358c57303c05dfc51b4f
-  languageName: node
-  linkType: hard
-
 "@babel/preset-modules@npm:^0.1.5":
   version: 0.1.5
   resolution: "@babel/preset-modules@npm:0.1.5"
@@ -4164,7 +4128,6 @@ __metadata:
     "@babel/eslint-plugin-development": ^7.17.7
     "@babel/plugin-transform-runtime": ^7.17.0
     "@babel/preset-env": ^7.16.11
-    "@babel/preset-flow": ^7.16.7
     "@babel/preset-typescript": ^7.16.7
     "@babel/runtime": ^7.17.8
     "@rollup/plugin-babel": ^5.3.0
@@ -4182,7 +4145,6 @@ __metadata:
     eslint-plugin-import: ^2.17.2
     eslint-plugin-prettier: ^3.1.0
     fancy-log: ^1.3.3
-    flow-bin: ^0.107.0
     gulp: ^4.0.2
     gulp-babel: ^8.0.0
     gulp-newer: ^1.0.0
@@ -6868,15 +6830,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"flow-bin@npm:^0.107.0":
-  version: 0.107.0
-  resolution: "flow-bin@npm:0.107.0"
-  bin:
-    flow: cli.js
-  checksum: 31e9fa3c81ceeb102a2269385e5d7c64d4040adb152ddeded108f5b8d47401cd78fe503087061b8a74ef34b2b09ed00cd87a923b2ffe5dcbbd9b9164e3466618
-  languageName: node
-  linkType: hard
-
 "flush-write-stream@npm:^1.0.0, flush-write-stream@npm:^1.0.2":
   version: 1.1.1
   resolution: "flush-write-stream@npm:1.1.1"