Code cleanup. Check all node_modules.

index.js

@@ -1,88 +1,106 @@
-/*
-   - check symlink in depencency and devDepency
-   - if found, generate rn-cli-config.js
-   - react-native start with rn-cli-config
-
-   Sources:
-   https://github.com/facebook/metro/issues/1#issuecomment-346502388
-   https://github.com/facebook/metro/issues/1#issuecomment-334546083
-*/
-
-const fs = require('fs');
-const exec = require('child_process').execSync;
-
-const getDependencyPath = (dependency) => fs.realpathSync(`node_modules/${dependency}`);
-
-const getSymlinkedDependencies = () => {
-  const packageJson = require(`${process.cwd()}/package.json`);
-  const dependencies = [
-    ...Object.keys(packageJson.dependencies),
-    ...Object.keys(packageJson.devDependencies),
-  ];
-  return dependencies.filter((dependency) =>
+// Check for symlinks in node_modules
+// If found generate and use metro config.
+//
+// Sources:
+//     - https://github.com/facebook/metro/issues/1#issuecomment-346502388
+//     - https://github.com/facebook/metro/issues/1#issuecomment-334546083
+
+const fs = require('fs')
+const exec = require('child_process').execSync
+const dedent = require('dedent-js')
+
+const getDependencyPath = dependency =>
+    fs.realpathSync(`node_modules/${dependency}`)
+
+const isSymlink = dependency =>
     fs.lstatSync(`node_modules/${dependency}`).isSymbolicLink()
-  );
-};
-
-const generateMetroConfig = (symlinkedDependencies) => {
-  const symlinkedDependenciesPaths = symlinkedDependencies.map(getDependencyPath);
-
-  const peerDependenciesOfSymlinkedDependencies = symlinkedDependenciesPaths
-    .map((path) => require(`${path}/package.json`).peerDependencies)
-    .map((peerDependencies) => (peerDependencies ? Object.keys(peerDependencies) : []))
-    // flatten the array of arrays
-    .reduce((flatDependencies, dependencies) => [...flatDependencies, ...dependencies], [])
-    // filter to make array elements unique
-    .filter((dependency, i, dependencies) => dependencies.indexOf(dependency) === i);
-
-  fs.writeFileSync(
-    'metro.config.js',
-    `/* eslint-disable */
-const path = require('path');
-const blacklist = require('metro/src/blacklist');
-
-module.exports = {
-  extraNodeModules: {
-    ${peerDependenciesOfSymlinkedDependencies
-      .map((name) => `'${name}': path.resolve(__dirname, 'node_modules/${name}')`)
-      .join(',\n    ')}
-  },
-  getBlacklistRE: () => blacklist([
-    ${symlinkedDependenciesPaths
-      .map(
-        (path) =>
-          `/${path.replace(/\//g, '[/\\\\]')}[/\\\\]node_modules[/\\\\]react-native[/\\\\].*/`
-      )
-      .join(',\n    ')}
-  ]),
-  getProjectRoots: () => [
-    // Include current package as project root
-    path.resolve(__dirname),
-    // Include symlinked packages as project roots
-    ${symlinkedDependenciesPaths.map((path) => `path.resolve('${path}')`).join(',\n    ')}
-  ],
-};`
-  );
-};
-
-/* global process */
-
-const symlinkedDependencies = getSymlinkedDependencies();
-// eslint-disable-next-line no-console
-console.log(`
-Detected symlinked packaged:
-${symlinkedDependencies
-  .map((dependency) => `   ${dependency} -> ${getDependencyPath(dependency)}`)
-  .join('\n')}
-`);
-
-generateMetroConfig(symlinkedDependencies, 'metro.config.js');
-// eslint-disable-next-line no-console
-console.log('Generated custom metro.config.js to support symlinks\n');
-
-const command = process.argv[2];
-const flags = process.argv.slice(3).join(' ');
+const getSymlinkedDependencies = () =>
+    fs.readdirSync(`${process.cwd()}/node_modules`).filter(isSymlink)
+
+const mapModule = name =>
+    `    '${name}': path.resolve(__dirname, 'node_modules/${name}')`
+const mapPath = path =>
+    `    /${path.replace(
+        /\//g,
+        '[/\\\\]',
+    )}[/\\\\]node_modules[/\\\\]react-native[/\\\\].*/`
+
+const generateMetroConfig = symlinkedDependencies => {
+    const symlinkedDependenciesPaths = symlinkedDependencies.map(
+        getDependencyPath,
+    )
+
+    const peerDependenciesOfSymlinkedDependencies = symlinkedDependenciesPaths
+        .map(path => require(`${path}/package.json`).peerDependencies)
+        .map(
+            peerDependencies =>
+                peerDependencies ? Object.keys(peerDependencies) : [],
+        )
+        // flatten the array of arrays
+        .reduce(
+            (flatDependencies, dependencies) => [
+                ...flatDependencies,
+                ...dependencies,
+            ],
+            [],
+        )
+        // filter to make array elements unique
+        .filter(
+            (dependency, i, dependencies) =>
+                dependencies.indexOf(dependency) === i,
+        )
+
+    const extraNodeModules = peerDependenciesOfSymlinkedDependencies
+        .map(mapModule)
+        .join(',\n')
+
+    const getBlacklistRE = symlinkedDependenciesPaths.map(mapPath).join(',\n')
+
+    const getProjectRoots = symlinkedDependenciesPaths
+        .map(path => `    path.resolve('${path}')`)
+        .join(',\n')
+
+    return dedent`
+       const path = require('path');
+       const blacklist = require('metro/src/blacklist');
+
+       module.exports = {
+           extraNodeModules: {
+           ${extraNodeModules}
+           },
+           getBlacklistRE: () => blacklist([
+           ${getBlacklistRE}
+           ]),
+           getProjectRoots: () => [
+               // Include current package as project root
+               path.resolve(__dirname),
+               // Include symlinked packages as project roots
+           ${getProjectRoots}
+           ],
+       };
+   `
+}
+
+const symlinkedDependencies = getSymlinkedDependencies()
+const packagesString = symlinkedDependencies
+    .map(
+        dependency => `    - ${dependency} -> ${getDependencyPath(dependency)}`,
+    )
+    .join('\n')
+
+const config = generateMetroConfig(symlinkedDependencies)
+fs.writeFileSync('metro.config.js', config)
+
+console.log(dedent`
+    using metro-with-symlinks - https://github.com/MrLoh/metro-with-symlinks
+
+    Detected symlinked packages:
+    ${packagesString}
+`)
+
+const command = process.argv[2]
+const flags = process.argv.slice(3).join(' ')
 exec(
-  `node node_modules/react-native/local-cli/cli.js ${command} --config ../../../../metro.config.js ${flags}`,
-  { stdio: [0, 1, 2] }
-);
+    `node node_modules/react-native/local-cli/cli.js ${command} --config ../../../../metro.config.js ${flags}`,
+    { stdio: [0, 1, 2] },
+)

package.json

@@ -1,14 +1,19 @@
 {
   "name": "metro-with-symlinks",
   "version": "1.0.5",
-  "description": "Extension to metro packager enabling the use of symlinks",
-  "repository": "https://github.com/MrLoh/metro-with-symlinks",
-  "main": "index.js",
-  "author": "@MrLoh",
+  "description": "Extension to metro packager enabling the use of symlinks.",
   "license": "MIT",
-  "private": false,
-  "sripts": {
-    "publish": "npm version patch && npm publish"
+  "author": "@MrLoh",
+  "main": "index.js",
+  "repository": "https://github.com/MrLoh/metro-with-symlinks",
+  "scripts": {
+    "format": "prettier --write --list-different '*.js'",
+    "publish": "npm version patch && npm publish",
+    "test": "format"
+  },
+  "devDependencies": {
+    "dedent-js": "^1.0.1",
+    "prettier": "^1.12.1"
   },
   "peerDependencies": {
     "react-native": "^0.55.3"

prettier.config.js

@@ -0,0 +1,6 @@
+module.exports = {
+    semi: false,
+    singleQuote: true,
+    trailingComma: 'all',
+    tabWidth: 4,
+}

yarn.lock

@@ -0,0 +1,11 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+dedent-js@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/dedent-js/-/dedent-js-1.0.1.tgz#bee5fb7c9e727d85dffa24590d10ec1ab1255305"
+
+prettier@^1.12.1:
+  version "1.12.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.12.1.tgz#c1ad20e803e7749faf905a409d2367e06bbe7325"