[all] Remove now prefix in packages (#5928)

* remove prefix from codeowners

* remove references from ignore files

* Remove prefix from package json and tests

* Add run js without prefixes

* Rename package folders

* Delete auto generated test files

* Remove now-node in integration test

* Put back deleted vercel json files

* Remove eol

* Add styfle suggestion to comment in utils/run.js

Co-authored-by: Steven <steven@ceriously.com>

packages/cli/scripts/preinstall.js

@@ -0,0 +1,101 @@
+#!/usr/bin/env node
+const { join } = require('path');
+const { statSync } = require('fs');
+const pkg = require('../package');
+
+function error(command) {
+  console.error('> Error!', command);
+}
+
+function debug(str) {
+  if (
+    process.argv.find(str => str === '--debug') ||
+    process.env.PREINSTALL_DEBUG
+  ) {
+    console.log(`[debug] [${new Date().toISOString()}]`, str);
+  }
+}
+
+function isYarn() {
+  return process.env.npm_config_heading !== 'npm';
+}
+
+function isGlobal() {
+  const cmd = JSON.parse(process.env.npm_config_argv || '{ "original": [] }');
+
+  return isYarn()
+    ? cmd.original.includes('global')
+    : Boolean(process.env.npm_config_global);
+}
+
+function isVercel() {
+  return pkg.name === 'vercel';
+}
+
+function validateNodeVersion() {
+  let semver = '>= 0';
+  let major = '1';
+
+  try {
+    major = process.versions.node.split('.')[0];
+    const pkg = require('../package.json');
+    semver = pkg.engines.node;
+  } catch (e) {
+    debug('Failed to read package.json engines');
+  }
+
+  const isValid = eval(`${major} ${semver}`);
+  return { isValid, expected: semver, actual: process.versions.node };
+}
+
+function isInNodeModules(name) {
+  try {
+    const nodeModules = join(__dirname, '..', '..');
+    const stat = statSync(join(nodeModules, name));
+    return stat.isDirectory();
+  } catch (err) {
+    return false;
+  }
+}
+
+async function main() {
+  if (!isGlobal()) {
+    debug('Skipping preinstall since Vercel CLI is being installed locally');
+    return;
+  }
+
+  const ver = validateNodeVersion();
+
+  if (!ver.isValid) {
+    error(
+      `Detected unsupported Node.js version.\n` +
+        `Expected "${ver.expected}" but found "${ver.actual}".\n` +
+        `Please update to the latest Node.js LTS version to install Vercel CLI.`
+    );
+    process.exit(1);
+  }
+
+  if (isVercel() && isInNodeModules('now')) {
+    const uninstall = isYarn()
+      ? 'yarn global remove now'
+      : 'npm uninstall -g now';
+    console.error(`NOTE: Run \`${uninstall}\` to uninstall \`now\`\n`);
+  }
+}
+
+process.on('unhandledRejection', err => {
+  console.error('Unhandled Rejection:');
+  console.error(err);
+  process.exit(1);
+});
+
+process.on('uncaughtException', err => {
+  console.error('Uncaught Exception:');
+  console.error(err);
+  process.exit(1);
+});
+
+main().catch(err => {
+  console.error(err);
+  process.exit(1);
+});