Add version matcher script

packages/monorepo-scripts/package.json

@@ -0,0 +1,33 @@
+{
+  "name": "@0xproject/monorepo-scripts",
+  "version": "0.0.0",
+  "description": "Helper scripts for the monorepo",
+  "scripts": {
+    "deps_versions": "node ./lib/deps_versions.js",
+    "lint": "tslint --project . 'src/**/*.ts'",
+    "clean": "shx rm -rf lib",
+    "build": "tsc"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/0xProject/0x.js.git"
+  },
+  "license": "Apache-2.0",
+  "bugs": {
+    "url": "https://github.com/0xProject/0x.js/issues"
+  },
+  "homepage": "https://github.com/0xProject/0x.js/packages/monorepo-scripts/README.md",
+  "devDependencies": {
+    "@0xproject/tslint-config": "^0.2.0",
+    "@types/glob": "^5.0.33",
+    "@types/node": "^8.0.53",
+    "shx": "^0.2.2",
+    "tslint": "5.8.0",
+    "typescript": "~2.6.1"
+  },
+  "dependencies": {
+    "chalk": "^2.3.0",
+    "glob": "^7.1.2",
+    "lodash": "^4.17.4"
+  }
+}

packages/monorepo-scripts/src/deps_versions.ts

@@ -0,0 +1,59 @@
+#!/usr/bin/env node
+
+import chalk from 'chalk';
+import * as fs from 'fs';
+import {sync as globSync} from 'glob';
+import * as _ from 'lodash';
+
+interface Dependencies {
+    [depName: string]: string;
+}
+interface Versions {
+    [packageName: string]: string;
+}
+interface VersionsByDependency {
+    [depName: string]: Versions;
+}
+
+function log(...args: any[]) {
+    console.log(...args); // tslint:disable-line:no-console
+}
+
+function getDependencies(path: string): Dependencies {
+    const file = fs.readFileSync(path).toString();
+    const parsed = JSON.parse(file);
+    const dependencies = {
+        ...parsed.dependencies,
+        ...parsed.devDependencies,
+    };
+    return dependencies;
+}
+
+function getPackageName(path: string): string {
+    const [dotDot, packageName, packageJSON] = path.split('/');
+    return packageName;
+}
+
+const files = globSync('../*/package.json');
+const versionsByDependency: VersionsByDependency = {};
+files.map(path => {
+    const packageName = getPackageName(path);
+    const dependencies = getDependencies(path);
+    _.map(dependencies, (version: string, depName: string) => {
+        if (_.isUndefined(versionsByDependency[depName])) {
+            versionsByDependency[depName] = {};
+        }
+        versionsByDependency[depName][packageName] = version;
+    });
+});
+
+_.map(versionsByDependency, (versions: Versions, depName: string) => {
+    if (_.uniq(_.values(versions)).length === 1) {
+        delete versionsByDependency[depName];
+    } else {
+        log(chalk.bold(depName));
+        _.map(versions, (version: string, packageName: string) => {
+            log(`├── ${packageName} -> ${version}`);
+        });
+    }
+});

packages/monorepo-scripts/tsconfig.json

@@ -0,0 +1,13 @@
+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "target": "es5",
+    "lib": ["es2015", "dom"],
+    "outDir": "lib",
+    "noImplicitAny": true,
+    "strictNullChecks": true
+  },
+  "include": [
+    "./src/**/*"
+  ]
+}

packages/monorepo-scripts/tslint.json

@@ -0,0 +1,5 @@
+{
+  "extends": [
+    "@0xproject/tslint-config"
+  ]
+}