Replace ad-hoc home dir expansion with package

Summary:
Instead of replacing the tilde with home-dirs on an incomplete, ad-hoc
basis, let's use a package for this. It also supports `~USER` resolution
which someone might reasonbly expect to work if `~/DIR` is working.

Reviewed By: jknoxville

Differential Revision: D13940956

fbshipit-source-id: 5bfa9b8b2540fed8c05c856ff736e48e925f985d

src/chrome/ScreenCaptureButtons.js

@@ -9,8 +9,9 @@ import {Button, ButtonGroup, Component} from 'flipper';
 import {connect} from 'react-redux';
 import AndroidDevice from '../devices/AndroidDevice';
 import IOSDevice from '../devices/IOSDevice';
-import os from 'os';
+import expandTilde from 'expand-tilde';
 import fs from 'fs';
+import os from 'os';
 import adb from 'adbkit-fb';
 import {exec, spawn} from 'child_process';
 import {remote} from 'electron';
@@ -19,11 +20,9 @@ import {reportPlatformFailures} from '../utils/metrics';
 
 let CAPTURE_LOCATION = remote.app.getPath('desktop');
 try {
-  CAPTURE_LOCATION =
-    JSON.parse(window.process.env.CONFIG).screenCapturePath.replace(
-      /^~/,
-      os.homedir(),
-    ) || CAPTURE_LOCATION;
+  CAPTURE_LOCATION = expandTilde(
+    JSON.parse(window.process.env.CONFIG).screenCapturePath || CAPTURE_LOCATION,
+  );
 } catch (e) {}
 
 import type BaseDevice from '../devices/BaseDevice';

static/compilePlugins.js

@@ -11,6 +11,7 @@ const fs = require('fs');
 const Metro = require('metro');
 const util = require('util');
 const recursiveReaddir = require('recursive-readdir');
+const expandTilde = require('expand-tilde');
 const HOME_DIR = require('os').homedir();
 
 /* eslint-disable prettier/prettier */
@@ -115,7 +116,7 @@ function pluginEntryPoints(additionalPaths = []) {
   return entryPoints;
 }
 function entryPointForPluginFolder(pluginPath) {
-  pluginPath = pluginPath.replace('~', HOME_DIR);
+  pluginPath = expandTilde(pluginPath);
   if (!fs.existsSync(pluginPath)) {
     return {};
   }

static/index.js

@@ -16,6 +16,7 @@ const {exec} = require('child_process');
 const compilePlugins = require('./compilePlugins.js');
 const os = require('os');
 const setup = require('./setup');
+const expandTilde = require('expand-tilde');
 
 // disable electron security warnings: https://github.com/electron/electron/blob/master/docs/tutorial/security.md#security-native-capabilities-and-your-responsibility
 process.env.ELECTRON_DISABLE_SECURITY_WARNINGS = true;
@@ -42,7 +43,7 @@ const pluginPaths = config.pluginPaths
     path.join(__dirname, '..', 'src', 'plugins'),
     path.join(__dirname, '..', 'src', 'fb', 'plugins'),
   )
-  .map(p => p.replace(/^~/, os.homedir()))
+  .map(expandTilde)
   .filter(fs.existsSync);
 
 process.env.CONFIG = JSON.stringify({