fix: Resolve TypeScript errors

Signed-off-by: Hermes Agent <hermes@nosuchhost>

client/node_modules/level-packager/abstract/destroy-test.js

@@ -0,0 +1,17 @@
+'use strict'
+
+var fs = require('fs')
+var path = require('path')
+var location = require('./location')
+
+module.exports = function (test, level) {
+  test('test destroy', function (t) {
+    t.plan(4)
+    t.ok(fs.statSync(location).isDirectory(), 'sanity check, directory exists')
+    t.ok(fs.existsSync(path.join(location, 'CURRENT')), 'sanity check, CURRENT exists')
+    level.destroy(location, function (err) {
+      t.notOk(err, 'no error')
+      t.notOk(fs.existsSync(path.join(location, 'CURRENT')), 'db gone (mostly)')
+    })
+  })
+}