Add Flow step to pipeline.yml

.buildkite/pipeline.yml

@@ -5,6 +5,11 @@ steps:
         build: fusion-cli
         image-repository: 296822479253.dkr.ecr.us-east-2.amazonaws.com/fusionjs
   - wait
+  - command: yarn flow
+    name: ':flowtype:'
+    plugins:
+      'docker-compose#v1.7.0':
+        run: fusion-cli
   - name: ':eslint:'
     command: yarn lint
     plugins:

.flowconfig

@@ -0,0 +1,14 @@
+[ignore]
+.*/node_modules/.*[^(package)]\.json$
+
+[include]
+./src/
+
+[libs]
+
+[lints]
+
+[options]
+suppress_comment= \\(.\\|\n\\)*\\$FlowIgnore
+
+[strict]

build/babel-plugins/babel-plugin-utils/visit-named-module.js

@@ -1,4 +1,3 @@
-// @flow
 /* eslint-env node */
 module.exports = createNamedModuleVisitor;
 

commands/build.js

@@ -28,7 +28,21 @@ exports.builder = {
   },
 };
 
-exports.run = async function({dir = '.', production, test, cover, logLevel}) {
+exports.run = async function(
+  {
+    dir = '.',
+    production,
+    test,
+    cover,
+    logLevel,
+  } /*: {
+    dir: string,
+    production: boolean,
+    test: boolean,
+    cover: boolean,
+    logLevel: string,
+  }*/
+) {
   const logger = new winston.Logger({
     transports: [
       new winston.transports.Console({colorize: true, level: logLevel}),

entries/server-entry.js

@@ -1,4 +1,3 @@
-//@flow
 /* eslint-env node */
 import http from 'http';
 import main from '__FRAMEWORK_SHARED_ENTRY__';

package.json

@@ -83,6 +83,7 @@
     "eslint-plugin-flowtype": "^2.35.0",
     "eslint-plugin-prettier": "^2.1.2",
     "eslint-plugin-react": "^7.1.0",
+    "flow-bin": "^0.59.0",
     "fusion-core": "^0.1.8",
     "globby": "^6.1.0",
     "prettier": "1.4.2",

plugins/compilation-metadata-plugin.js

@@ -1,4 +1,3 @@
-//@flow
 /* eslint-env node */
 
 /*

plugins/environment-variables-plugin.js

@@ -10,19 +10,23 @@ const {SingletonPlugin} = require('fusion-core');
 
 const rootDir = load('ROOT_DIR', '.');
 const env = load('NODE_ENV', 'development');
+if (!(env === 'development' || env === 'production')) {
+  throw new Error(`Invalid NODE_ENV loaded: ${env}.`);
+}
 const prefix = load('ROUTE_PREFIX', '');
 const assetPath = load('FRAMEWORK_STATIC_ASSET_PATH', '/_static');
 assert(!prefix.endsWith('/'), 'ROUTE_PREFIX must not end with /');
 
 module.exports = function() {
-  /*::
-  rootDir: String
-  env: 'development'|'production'
-  prefix: String
-  assetPath: String
-  */
   return new SingletonPlugin({
     Service: class EnvVarPlugin {
+      /*::
+        rootDir: string;
+        env: 'development' | 'production';
+        prefix: string;
+        assetPath: string;
+      */
+
       constructor() {
         this.rootDir = rootDir;
         this.env = env;

yarn.lock

@@ -2455,6 +2455,10 @@ flat-cache@^1.2.1:
     graceful-fs "^4.1.2"
     write "^0.2.1"
 
+flow-bin@^0.59.0:
+  version "0.59.0"
+  resolved "https://registry.npmjs.org/flow-bin/-/flow-bin-0.59.0.tgz#8c151ee7f09f1deed9bf0b9d1f2e8ab9d470f1bb"
+
 for-each@~0.3.2:
   version "0.3.2"
   resolved "https://registry.yarnpkg.com/for-each/-/for-each-0.3.2.tgz#2c40450b9348e97f281322593ba96704b9abd4d4"