Merge pull request #496 from 0xProject/removeUnusedDeps

Remove unused deps + Remove Dharma from website

2 files changed, 51 insertions, 2 deletions

diff --git a/packages/monorepo-scripts/package.json b/packages/monorepo-scripts/package.json
index e2ff1928d..b113b4b39 100644
--- a/packages/monorepo-scripts/package.json
+++ b/packages/monorepo-scripts/package.json
@@ -10,8 +10,10 @@
         "clean": "shx rm -rf lib",
         "build": "tsc",
         "test:publish": "run-s build script:publish",
+        "find_unused_deps": "run-s build script:find_unused_deps",
         "script:deps_versions": "node ./lib/deps_versions.js",
-        "script:publish": "IS_DRY_RUN=true node ./lib/publish.js"
+        "script:publish": "IS_DRY_RUN=true node ./lib/publish.js",
+        "script:find_unused_deps": "node ./lib/find_unused_dependencies.js"
     },
     "repository": {
         "type": "git",
@@ -24,10 +26,11 @@
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/monorepo-scripts/README.md",
     "comment": "// We purposefully use an older version of tslint-config here to avoid creating an import cycle",
     "devDependencies": {
-        "@0xproject/tslint-config": "0.4.8",
+        "@0xproject/tslint-config": "0.4.13",
         "@types/glob": "^5.0.33",
         "@types/node": "^8.0.53",
         "@types/rimraf": "^2.0.2",
+        "depcheck": "^0.6.9",
         "lerna-get-packages": "^1.0.0",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
@@ -35,6 +38,7 @@
         "typescript": "2.7.1"
     },
     "dependencies": {
+        "@types/depcheck": "^0.6.0",
         "async-child-process": "^1.1.1",
         "chalk": "^2.3.0",
         "es6-promisify": "^5.0.0",
diff --git a/packages/monorepo-scripts/src/find_unused_dependencies.ts b/packages/monorepo-scripts/src/find_unused_dependencies.ts
new file mode 100644
index 000000000..374cba2e3
--- /dev/null
+++ b/packages/monorepo-scripts/src/find_unused_dependencies.ts
@@ -0,0 +1,45 @@
+#!/usr/bin/env node
+
+import * as depcheck from 'depcheck';
+import * as fs from 'fs';
+import lernaGetPackages = require('lerna-get-packages');
+import * as _ from 'lodash';
+import { exec as execAsync } from 'promisify-child-process';
+
+import { constants } from './constants';
+import { utils } from './utils';
+
+// For some reason, `depcheck` hangs on some packages. Add them here.
+const IGNORE_PACKAGES = ['@0xproject/deployer'];
+
+(async () => {
+    utils.log('*** NOTE: Not all deps listed here are actually not required. ***');
+    utils.log("*** `depcheck` isn't perfect so double check before actually removing any. ***\n");
+    const lernaPackages = lernaGetPackages(constants.monorepoRootPath);
+    for (const lernaPackage of lernaPackages) {
+        if (_.includes(IGNORE_PACKAGES, lernaPackage.package.name)) {
+            continue; // skip
+        }
+        utils.log(`Checking ${lernaPackage.package.name} for unused deps. This might take a while...`);
+
+        const configs = {};
+        const result = await depcheckAsync(lernaPackage.location, configs);
+        if (!_.isEmpty(result.dependencies)) {
+            _.each(result.dependencies, dep => {
+                utils.log(dep);
+            });
+        }
+        utils.log('\n');
+    }
+})().catch(err => {
+    utils.log(err);
+    process.exit(1);
+});
+
+async function depcheckAsync(path: string, opts: any): Promise<depcheck.Results> {
+    return new Promise<depcheck.Results>((resolve, reject) => {
+        depcheck(path, opts, (unused: any) => {
+            resolve(unused);
+        });
+    });
+}