Run production tests on npm package (#3730)

* Run production tests on npm package

* Put back fast finish

scripts/test-dist.js

@@ -0,0 +1,33 @@
+#!/usr/bin/env node
+
+"use strict";
+
+const path = require("path");
+const shell = require("shelljs");
+const tempy = require("tempy");
+
+shell.config.fatal = true;
+
+const rootDir = path.join(__dirname, "..");
+const distDir = path.join(rootDir, "dist");
+
+const file = shell.exec("npm pack", { cwd: distDir }).stdout.trim();
+const tarPath = path.join(distDir, file);
+const tmpDir = tempy.directory();
+
+shell.config.silent = true;
+shell.exec("npm init -y", { cwd: tmpDir });
+shell.exec(`npm install "${tarPath}"`, { cwd: tmpDir });
+shell.config.silent = false;
+
+const code = shell.exec("yarn test --color --runInBand", {
+  cwd: rootDir,
+  env: Object.assign({}, process.env, {
+    NODE_ENV: "production",
+    AST_COMPARE: "1",
+    PRETTIER_DIR: path.join(tmpDir, "node_modules/prettier")
+  }),
+  shell: true
+}).code;
+
+process.exit(code);