fix: Resolve TypeScript errors

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

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

@@ -0,0 +1,53 @@
+'use strict'
+
+var location = require('./location')
+
+module.exports = function (test, level) {
+  test('test db open and use, level(location, cb)', function (t) {
+    level(location, function (err, db) {
+      t.notOk(err, 'no error')
+      db.put('test1', 'success', function (err) {
+        t.notOk(err, 'no error')
+        db.close(t.end.bind(t))
+      })
+    })
+  })
+
+  test('test db open and use, level(location, options, cb)', function (t) {
+    level(location, { createIfMissing: false, errorIfExists: false }, function (err, db) {
+      t.notOk(err, 'no error')
+      db.put('test2', 'success', function (err) {
+        t.notOk(err, 'no error')
+        db.close(t.end.bind(t))
+      })
+    })
+  })
+
+  test('test db open and use, db=level(location)', function (t) {
+    var db = level(location)
+    db.put('test3', 'success', function (err) {
+      t.notOk(err, 'no error')
+      db.close(t.end.bind(t))
+    })
+  })
+
+  test('options.keyEncoding and options.valueEncoding are passed on to encoding-down', function (t) {
+    var db = level(location, { keyEncoding: 'json', valueEncoding: 'json' })
+    db.on('ready', function () {
+      var codec = db.db.codec
+      t.equal(codec.opts.keyEncoding, 'json', 'keyEncoding correct')
+      t.equal(codec.opts.valueEncoding, 'json', 'valueEncoding correct')
+      db.close(t.end.bind(t))
+    })
+  })
+
+  test('encoding options default to utf8', function (t) {
+    var db = level(location)
+    db.on('ready', function () {
+      var codec = db.db.codec
+      t.equal(codec.opts.keyEncoding, 'utf8', 'keyEncoding correct')
+      t.equal(codec.opts.valueEncoding, 'utf8', 'valueEncoding correct')
+      db.close(t.end.bind(t))
+    })
+  })
+}