fix: implement flattenDeep so lodash isn't required

Author: mmkal

package.json

@@ -14,7 +14,7 @@
     "build": "tsc --project .",
     "lint": "tslint **/*.ts",
     "pretest": "npm run build",
-    "test": "test:unit",
+    "test": "npm run test:unit",
     "test:unit": "ava dist/test **/__tests__/*.js",
     "posttest": "npm run lint",
     "semantic-release": "semantic-release pre && npm publish && semantic-release post",

scripts/generate-client.ts

@@ -46,7 +46,7 @@ const generateClientImplementation = async (getCommands: typeof getFullCommands)
             ` * ${commandInfo.docs}`,
             ` */`,
             `${commandInfo.name}(...args: any[]) {`,
-            `    const flattenedArgs = _.flattenDeep(args);`,
+            `    const flattenedArgs = flattenDeep(args);`,
             `    return new Promise<any>((resolve, reject) => {`,
             `       (this.redis as any).${commandInfo.name}.apply(`,
             `           this.redis,`,
@@ -61,7 +61,7 @@ const generateClientImplementation = async (getCommands: typeof getFullCommands)
     });
 
     return [
-        `import * as _ from "lodash";`,
+        `import { flattenDeep } from "../flatten";`,
         `import { RedisClient } from "redis";`,
         `import { IHandyRedis } from "./interface";`,
         `class HandyRedis implements IHandyRedis {`,

src/__tests__/flatten.test.ts

@@ -0,0 +1,14 @@
+import test from "ava";
+import { flattenDeep } from "../flatten";
+
+test("already flat", t => {
+    t.deepEqual(flattenDeep([1, 2, 3]), [1, 2, 3]);
+});
+
+test("flatten shallow", t => {
+    t.deepEqual(flattenDeep([1, 2, [3, 4]]), [1, 2, 3, 4]);
+});
+
+test("flatten deep", t => {
+    t.deepEqual(flattenDeep([1, 2, [3, [4, [5]]]]), [1, 2, 3, 4, 5]);
+});

src/flatten.ts

@@ -0,0 +1,6 @@
+export const flattenDeep = (args: any[]): any[]  => {
+    if (!Array.isArray(args)) {
+        return args;
+    }
+    return [].concat(...args.map(flattenDeep) as any);
+};

src/index.ts

@@ -2,7 +2,6 @@ import { ClientOpts, createClient, RedisClient } from "redis";
 import { createHandyClient as _createHandyClient } from "./generated/client";
 import { IHandyRedis } from "./generated/interface";
 
-export * from "redis";
 export * from "./generated/interface";
 
 export interface ICreateHandyClient {