use stdin stream and api test

Update package.json

package.json

@@ -70,9 +70,5 @@
   },
   "workspaces": [
     "packages/*"
-  ],
-  "dependencies": {
-    "mkdirp": "^0.5.1",
-    "util.promisify": "^1.0.0"
-  }
+  ]
 }

packages/babili/__tests__/__snapshots__/node-api-tests.js.snap

@@ -1,3 +1,5 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`Babili Node API override default babili options 1`] = `"function foo(){const bar=x(1),baz=y(2);return z(bar,baz)}"`;
+
 exports[`Babili Node API simple usage 1`] = `"function foo(){const a=x(1),b=y(2);return z(a,b)}"`;

packages/babili/__tests__/cli-tests.js

@@ -2,7 +2,6 @@ jest.autoMockOff();
 
 const { spawn } = require("child_process");
 const path = require("path");
-const { Readable } = require("stream");
 const fs = require("fs");
 const promisify = require("util.promisify");
 const rimraf = require("rimraf");
@@ -20,10 +19,7 @@ function runCli(args = [], stdin) {
     });
 
     if (stdin) {
-      const s = new Readable();
-      s.push(stdin);
-      s.push(null);
-      s.pipe(child.stdin);
+      child.stdin.end(stdin);
     }
 
     let stdout = "";

packages/babili/__tests__/node-api-tests.js

@@ -18,4 +18,9 @@ describe("Babili Node API", () => {
   it("throw on invalid options", () => {
     expect(() => babili(sampleInput, { foo: false, bar: true }).code).toThrow();
   });
+
+  it("override default babili options", () => {
+    const babiliOpts = { mangle: false };
+    expect(babili(sampleInput, babiliOpts).code).toMatchSnapshot();
+  });
 });