diff --git a/package-lock.json b/package-lock.json
index feb63f4d..d77e8906 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -498,12 +498,6 @@
         "uri-js": "^4.2.2"
       }
     },
-    "ansi-color": {
-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/ansi-color/-/ansi-color-0.2.1.tgz",
-      "integrity": "sha1-PnXAN0dSF1RO12Oo21cJ+prlv5o=",
-      "dev": true
-    },
     "ansi-escapes": {
       "version": "4.3.0",
       "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-4.3.0.tgz",
@@ -528,12 +522,6 @@
         "color-convert": "^1.9.0"
       }
     },
-    "any-promise": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/any-promise/-/any-promise-1.3.0.tgz",
-      "integrity": "sha1-q8av7tzqUugJzcA3au0845Y10X8=",
-      "dev": true
-    },
     "argparse": {
       "version": "1.0.10",
       "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
@@ -658,12 +646,6 @@
       "integrity": "sha1-iYUI2iIm84DfkEcoRWhJwVAaSw0=",
       "dev": true
     },
-    "assertion-error": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/assertion-error/-/assertion-error-1.1.0.tgz",
-      "integrity": "sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==",
-      "dev": true
-    },
     "assign-symbols": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/assign-symbols/-/assign-symbols-1.0.0.tgz",
@@ -888,17 +870,6 @@
         "node-releases": "^1.1.42"
       }
     },
-    "bufrw": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/bufrw/-/bufrw-1.2.1.tgz",
-      "integrity": "sha1-k/IiIptPX14s1VkjaJFAf5hTZjs=",
-      "dev": true,
-      "requires": {
-        "ansi-color": "^0.2.1",
-        "error": "^7.0.0",
-        "xtend": "^4.0.0"
-      }
-    },
     "builtin-modules": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-1.1.1.tgz",
@@ -963,29 +934,6 @@
       "integrity": "sha512-fpZ81yYfzentuieinmGnphk0pLkOTMm6MZdVqwd77ROvhko6iujLNGrHH5E7utq3ygWklwfmwuG+A7P+NpqT6w==",
       "dev": true
     },
-    "chai": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/chai/-/chai-4.2.0.tgz",
-      "integrity": "sha512-XQU3bhBukrOsQCuwZndwGcCVQHyZi53fQ6Ys1Fym7E4olpIqqZZhhoFJoaKVvV17lWQoXYwgWN2nF5crA8J2jw==",
-      "dev": true,
-      "requires": {
-        "assertion-error": "^1.1.0",
-        "check-error": "^1.0.2",
-        "deep-eql": "^3.0.1",
-        "get-func-name": "^2.0.0",
-        "pathval": "^1.1.0",
-        "type-detect": "^4.0.5"
-      }
-    },
-    "chai-as-promised": {
-      "version": "7.1.1",
-      "resolved": "https://registry.npmjs.org/chai-as-promised/-/chai-as-promised-7.1.1.tgz",
-      "integrity": "sha512-azL6xMoi+uxu6z4rhWQ1jbdUhOMhis2PvscD/xjLqNMkv3BPPp2JyyuTHOrf9BOosGpNQ11v6BKv/g57RXbiaA==",
-      "dev": true,
-      "requires": {
-        "check-error": "^1.0.2"
-      }
-    },
     "chalk": {
       "version": "2.4.1",
       "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.1.tgz",
@@ -1036,12 +984,6 @@
       "integrity": "sha512-mT8iDcrh03qDGRRmoA2hmBJnxpllMR+0/0qlzjqZES6NdiWDcZkCNAk4rPFZ9Q85r27unkiNNg8ZOiwZXBHwcA==",
       "dev": true
     },
-    "check-error": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/check-error/-/check-error-1.0.2.tgz",
-      "integrity": "sha1-V00xLt2Iu13YkS6Sht1sCu1KrII=",
-      "dev": true
-    },
     "class-utils": {
       "version": "0.3.6",
       "resolved": "https://registry.npmjs.org/class-utils/-/class-utils-0.3.6.tgz",
@@ -1120,6 +1062,12 @@
       "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
       "dev": true
     },
+    "command-exists": {
+      "version": "1.2.6",
+      "resolved": "https://registry.npmjs.org/command-exists/-/command-exists-1.2.6.tgz",
+      "integrity": "sha512-Qst/zUUNmS/z3WziPxyqjrcz09pm+2Knbs5mAZL4VAE0sSrNY1/w8+/YxeHcoBTsO6iojA6BW7eFf27Eg2MRuw==",
+      "dev": true
+    },
     "commander": {
       "version": "2.20.0",
       "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.0.tgz",
@@ -1237,6 +1185,12 @@
         "which": "^1.2.9"
       }
     },
+    "crypto-random-string": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/crypto-random-string/-/crypto-random-string-1.0.0.tgz",
+      "integrity": "sha1-ojD2T1aDEOFJgAmUB5DsmVRbyn4=",
+      "dev": true
+    },
     "css-selector-parser": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/css-selector-parser/-/css-selector-parser-1.3.0.tgz",
@@ -1291,21 +1245,6 @@
       "integrity": "sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=",
       "dev": true
     },
-    "deep-eql": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/deep-eql/-/deep-eql-3.0.1.tgz",
-      "integrity": "sha512-+QeIQyN5ZuO+3Uk5DYh6/1eKO0m0YmJFGNmFHGACpf1ClL1nmlV/p4gNgbl2pJGxgXb4faqo6UE+M5ACEMyVcw==",
-      "dev": true,
-      "requires": {
-        "type-detect": "^4.0.0"
-      }
-    },
-    "deep-equal": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/deep-equal/-/deep-equal-1.0.1.tgz",
-      "integrity": "sha1-9dJgKStmDghO/0zbyfCK0yR0SLU=",
-      "dev": true
-    },
     "deep-is": {
       "version": "0.1.3",
       "resolved": "https://registry.npmjs.org/deep-is/-/deep-is-0.1.3.tgz",
@@ -1473,16 +1412,6 @@
       "integrity": "sha512-f2LZMYl1Fzu7YSBKg+RoROelpOaNrcGmE9AZubeDfrCEia483oW4MI4VyFd5VNHIgQ/7qm1I0wUHK1eJnn2y2w==",
       "dev": true
     },
-    "error": {
-      "version": "7.0.2",
-      "resolved": "https://registry.npmjs.org/error/-/error-7.0.2.tgz",
-      "integrity": "sha1-pfdf/02ZJhJt2sDqXcOOaJFTywI=",
-      "dev": true,
-      "requires": {
-        "string-template": "~0.2.1",
-        "xtend": "~4.0.0"
-      }
-    },
     "error-ex": {
       "version": "1.3.2",
       "resolved": "https://registry.npmjs.org/error-ex/-/error-ex-1.3.2.tgz",
@@ -2035,15 +1964,6 @@
         }
       }
     },
-    "fast-json-patch": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/fast-json-patch/-/fast-json-patch-2.1.0.tgz",
-      "integrity": "sha512-PipOsAKamRw7+CXtKiieehyjUeDVPJ5J7b2kdJYerEf6TSUQoD2ijpVyZ88KQm5YXziff4h762bz3+vzf56khg==",
-      "dev": true,
-      "requires": {
-        "deep-equal": "^1.0.1"
-      }
-    },
     "fast-json-stable-stringify": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.0.0.tgz",
@@ -2144,6 +2064,17 @@
         "map-cache": "^0.2.2"
       }
     },
+    "fs-extra": {
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-7.0.1.tgz",
+      "integrity": "sha512-YJDaCJZEnBmcbw13fvdAM9AwNOJwOzrE4pqMqBq5nFiEqXUqHwlK4B+3pUw6JNvfSPtX05xFHtYy/1ni01eGCw==",
+      "dev": true,
+      "requires": {
+        "graceful-fs": "^4.1.2",
+        "jsonfile": "^4.0.0",
+        "universalify": "^0.1.0"
+      }
+    },
     "fs.realpath": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
@@ -2162,12 +2093,6 @@
       "integrity": "sha1-GwqzvVU7Kg1jmdKcDj6gslIHgyc=",
       "dev": true
     },
-    "get-func-name": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/get-func-name/-/get-func-name-2.0.0.tgz",
-      "integrity": "sha1-6td0q+5y4gQJQzoGY2YCPdaIekE=",
-      "dev": true
-    },
     "get-stdin": {
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/get-stdin/-/get-stdin-7.0.0.tgz",
@@ -2780,71 +2705,6 @@
       "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
       "dev": true
     },
-    "iterare": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/iterare/-/iterare-1.1.2.tgz",
-      "integrity": "sha512-25rVYmj/dDvTR6zOa9jY1Ihd6USLa0J508Ub2iy7Aga+xu9JMbjDds2Uh03ReDGbva/YN3s3Ybi+Do0nOX6wAg==",
-      "dev": true
-    },
-    "jaeger-client": {
-      "version": "3.15.0",
-      "resolved": "https://registry.npmjs.org/jaeger-client/-/jaeger-client-3.15.0.tgz",
-      "integrity": "sha512-0SfuEE7E6XVLhu8th5JG/ACtnIWq4Tad0iSst3+De9HOMSz1RI0Tl1MLXzetudI670rqfCs4m37XCTMRgu8oxg==",
-      "dev": true,
-      "requires": {
-        "node-int64": "^0.4.0",
-        "opentracing": "^0.13.0",
-        "thriftrw": "^3.5.0",
-        "uuid": "^3.2.1",
-        "xorshift": "^0.2.0"
-      },
-      "dependencies": {
-        "opentracing": {
-          "version": "0.13.0",
-          "resolved": "https://registry.npmjs.org/opentracing/-/opentracing-0.13.0.tgz",
-          "integrity": "sha1-ajQUQvCdfYZrwR7QPeHjgo49aqs=",
-          "dev": true
-        }
-      }
-    },
-    "javascript-typescript-langserver": {
-      "version": "2.11.3",
-      "resolved": "https://registry.npmjs.org/javascript-typescript-langserver/-/javascript-typescript-langserver-2.11.3.tgz",
-      "integrity": "sha512-j2dKPq5tgSUyM2AOXWh2O7pNWzXzKI/3W02X1OrEZnV3B9yt9IM+snuGt/mk1Nryxyy7OZnhdL0XqHe4xx7Qzw==",
-      "dev": true,
-      "requires": {
-        "chai": "^4.0.1",
-        "chai-as-promised": "^7.0.0",
-        "chalk": "^2.2.0",
-        "commander": "^2.9.0",
-        "fast-json-patch": "^2.0.2",
-        "glob": "^7.1.1",
-        "iterare": "^1.1.2",
-        "jaeger-client": "^3.5.3",
-        "lodash": "^4.17.4",
-        "mz": "^2.6.0",
-        "object-hash": "^1.1.8",
-        "opentracing": "^0.14.0",
-        "rxjs": "^5.5.0",
-        "semaphore-async-await": "^1.5.1",
-        "string-similarity": "^2.0.0",
-        "typescript": "~3.0.3",
-        "vscode-jsonrpc": "^4.0.0",
-        "vscode-languageserver": "^5.0.0",
-        "vscode-languageserver-types": "^3.0.3"
-      },
-      "dependencies": {
-        "rxjs": {
-          "version": "5.5.12",
-          "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-5.5.12.tgz",
-          "integrity": "sha512-xx2itnL5sBbqeeiVgNPVuQQ1nC8Jp2WfNJhXWHmElW9YmrpS9UVnNzhP3EH3HFqexO5Tlp8GhYY+WEcqcVMvGw==",
-          "dev": true,
-          "requires": {
-            "symbol-observable": "1.0.1"
-          }
-        }
-      }
-    },
     "js-stringify": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/js-stringify/-/js-stringify-1.0.2.tgz",
@@ -2908,6 +2768,15 @@
         }
       }
     },
+    "jsonfile": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-4.0.0.tgz",
+      "integrity": "sha1-h3Gq4HmbZAdrdmQPygWPnBDjPss=",
+      "dev": true,
+      "requires": {
+        "graceful-fs": "^4.1.6"
+      }
+    },
     "kind-of": {
       "version": "6.0.2",
       "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.2.tgz",
@@ -3000,12 +2869,6 @@
         }
       }
     },
-    "long": {
-      "version": "2.4.0",
-      "resolved": "https://registry.npmjs.org/long/-/long-2.4.0.tgz",
-      "integrity": "sha1-n6GAux2VAM3CnEFWdmoZleH0Uk8=",
-      "dev": true
-    },
     "longest-streak": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/longest-streak/-/longest-streak-2.0.3.tgz",
@@ -3271,17 +3134,6 @@
       "integrity": "sha512-nnbWWOkoWyUsTjKrhgD0dcz22mdkSnpYqbEjIm2nhwhuxlSkpywJmBo8h0ZqJdkp73mb90SssHkN4rsRaBAfAA==",
       "dev": true
     },
-    "mz": {
-      "version": "2.7.0",
-      "resolved": "https://registry.npmjs.org/mz/-/mz-2.7.0.tgz",
-      "integrity": "sha512-z81GNO7nnYMEhrGh9LeymoE4+Yr0Wn5McHIZMK5cfQCl+NDX08sCZgUc9/6MHni9IWuFLm1Z3HTCXu2z9fN62Q==",
-      "dev": true,
-      "requires": {
-        "any-promise": "^1.0.0",
-        "object-assign": "^4.0.1",
-        "thenify-all": "^1.0.0"
-      }
-    },
     "nanomatch": {
       "version": "1.2.13",
       "resolved": "https://registry.npmjs.org/nanomatch/-/nanomatch-1.2.13.tgz",
@@ -3313,12 +3165,6 @@
       "integrity": "sha512-1nh45deeb5olNY7eX82BkPO7SSxR5SSYJiPTrTdFUVYwAl8CKMA5N9PjTYkHiRjisVcxcQ1HXdLhx2qxxJzLNQ==",
       "dev": true
     },
-    "node-int64": {
-      "version": "0.4.0",
-      "resolved": "https://registry.npmjs.org/node-int64/-/node-int64-0.4.0.tgz",
-      "integrity": "sha1-h6kGXNs1XTGC2PlM4RGIuCXGijs=",
-      "dev": true
-    },
     "node-releases": {
       "version": "1.1.44",
       "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-1.1.44.tgz",
@@ -3403,12 +3249,6 @@
         }
       }
     },
-    "object-hash": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/object-hash/-/object-hash-1.3.1.tgz",
-      "integrity": "sha512-OSuu/pU4ENM9kmREg0BdNrUDIl1heYa4mBZacJc+vVWz4GtAwu7jO8s4AIt2aGRUTqxykpWzI3Oqnsm13tTMDA==",
-      "dev": true
-    },
     "object-inspect": {
       "version": "1.7.0",
       "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.7.0.tgz",
@@ -3493,12 +3333,6 @@
         "mimic-fn": "^2.1.0"
       }
     },
-    "opentracing": {
-      "version": "0.14.3",
-      "resolved": "https://registry.npmjs.org/opentracing/-/opentracing-0.14.3.tgz",
-      "integrity": "sha1-I+OtAp+mamU5Jq2+V+g0Rp+FUKo=",
-      "dev": true
-    },
     "optionator": {
       "version": "0.8.3",
       "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.8.3.tgz",
@@ -3519,6 +3353,12 @@
       "integrity": "sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=",
       "dev": true
     },
+    "p-debounce": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/p-debounce/-/p-debounce-1.0.0.tgz",
+      "integrity": "sha1-y38svu/YegnrqGHhErZ1J+Yh4v0=",
+      "dev": true
+    },
     "p-limit": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-1.3.0.tgz",
@@ -3614,12 +3454,6 @@
         "pify": "^2.0.0"
       }
     },
-    "pathval": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.0.tgz",
-      "integrity": "sha1-uULm1L3mUwBe9rcTYd74cn0GReA=",
-      "dev": true
-    },
     "picomatch": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.1.1.tgz",
@@ -4124,12 +3958,6 @@
       "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
       "dev": true
     },
-    "semaphore-async-await": {
-      "version": "1.5.1",
-      "resolved": "https://registry.npmjs.org/semaphore-async-await/-/semaphore-async-await-1.5.1.tgz",
-      "integrity": "sha1-hXvvXjZEYBykuVcLh+nfXKEpdPo=",
-      "dev": true
-    },
     "semver": {
       "version": "5.6.0",
       "resolved": "https://registry.npmjs.org/semver/-/semver-5.6.0.tgz",
@@ -4430,18 +4258,6 @@
         }
       }
     },
-    "string-similarity": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/string-similarity/-/string-similarity-2.0.0.tgz",
-      "integrity": "sha512-62FBZrVXV5cI23bQ9L49Y4d9u9yaH61JhAwLyUFUzQbHDjdihxdfCwIherg+vylR/s4ucCddK8iKSEO7kinffQ==",
-      "dev": true
-    },
-    "string-template": {
-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/string-template/-/string-template-0.2.1.tgz",
-      "integrity": "sha1-QpMuWYo1LQH8IuwzZ9nYTuxsmt0=",
-      "dev": true
-    },
     "string-width": {
       "version": "4.2.0",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.0.tgz",
@@ -4726,12 +4542,6 @@
       "integrity": "sha1-WPcc7jvVGbWdSyqEO2x95krAR2Q=",
       "dev": true
     },
-    "symbol-observable": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/symbol-observable/-/symbol-observable-1.0.1.tgz",
-      "integrity": "sha1-g0D8RwLDEi310iKI+IKD9RPT/dQ=",
-      "dev": true
-    },
     "table": {
       "version": "5.4.6",
       "resolved": "https://registry.npmjs.org/table/-/table-5.4.6.tgz",
@@ -4763,40 +4573,27 @@
         }
       }
     },
-    "text-table": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
-      "integrity": "sha1-f17oI66AUgfACvLfSoTsP8+lcLQ=",
+    "temp-dir": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/temp-dir/-/temp-dir-1.0.0.tgz",
+      "integrity": "sha1-CnwOom06Oa+n4OvqnB/AvE2qAR0=",
       "dev": true
     },
-    "thenify": {
-      "version": "3.3.0",
-      "resolved": "https://registry.npmjs.org/thenify/-/thenify-3.3.0.tgz",
-      "integrity": "sha1-5p44obq+lpsBCCB5eLn2K4hgSDk=",
-      "dev": true,
-      "requires": {
-        "any-promise": "^1.0.0"
-      }
-    },
-    "thenify-all": {
-      "version": "1.6.0",
-      "resolved": "https://registry.npmjs.org/thenify-all/-/thenify-all-1.6.0.tgz",
-      "integrity": "sha1-GhkY1ALY/D+Y+/I02wvMjMEOlyY=",
+    "tempy": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/tempy/-/tempy-0.2.1.tgz",
+      "integrity": "sha512-LB83o9bfZGrntdqPuRdanIVCPReam9SOZKW0fOy5I9X3A854GGWi0tjCqoXEk84XIEYBc/x9Hq3EFop/H5wJaw==",
       "dev": true,
       "requires": {
-        "thenify": ">= 3.1.0 < 4"
+        "temp-dir": "^1.0.0",
+        "unique-string": "^1.0.0"
       }
     },
-    "thriftrw": {
-      "version": "3.11.3",
-      "resolved": "https://registry.npmjs.org/thriftrw/-/thriftrw-3.11.3.tgz",
-      "integrity": "sha512-mnte80Go5MCfYyOQ9nk6SljaEicCXlwLchupHR+/zlx0MKzXwAiyt38CHjLZVvKtoyEzirasXuNYtkEjgghqCw==",
-      "dev": true,
-      "requires": {
-        "bufrw": "^1.2.1",
-        "error": "7.0.2",
-        "long": "^2.4.0"
-      }
+    "text-table": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
+      "integrity": "sha1-f17oI66AUgfACvLfSoTsP8+lcLQ=",
+      "dev": true
     },
     "through": {
       "version": "2.3.8",
@@ -4906,12 +4703,6 @@
         "prelude-ls": "~1.1.2"
       }
     },
-    "type-detect": {
-      "version": "4.0.8",
-      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
-      "integrity": "sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==",
-      "dev": true
-    },
     "type-fest": {
       "version": "0.8.1",
       "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.8.1.tgz",
@@ -4928,11 +4719,26 @@
       }
     },
     "typescript": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.0.3.tgz",
-      "integrity": "sha512-kk80vLW9iGtjMnIv11qyxLqZm20UklzuR2tL0QAnDIygIUIemcZMxlMWudl9OOt76H3ntVzcTiddQ1/pAAJMYg==",
+      "version": "3.7.4",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.4.tgz",
+      "integrity": "sha512-A25xv5XCtarLwXpcDNZzCGvW2D1S3/bACratYBx2sax8PefsFhlYmkQicKHvpYflFS8if4zne5zT5kpJ7pzuvw==",
       "dev": true
     },
+    "typescript-language-server": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/typescript-language-server/-/typescript-language-server-0.4.0.tgz",
+      "integrity": "sha512-K8jNOmDFn+QfrCh8ujby2pGDs5rpjYZQn+zvQnf42rxG4IHbfw5CHoMvbGkWPK/J5Gw8/l5K3i03kVZC2IBElg==",
+      "dev": true,
+      "requires": {
+        "command-exists": "1.2.6",
+        "commander": "^2.11.0",
+        "fs-extra": "^7.0.0",
+        "p-debounce": "^1.0.0",
+        "tempy": "^0.2.1",
+        "vscode-languageserver": "^5.3.0-next",
+        "vscode-uri": "^1.0.5"
+      }
+    },
     "unherit": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/unherit/-/unherit-1.1.2.tgz",
@@ -4977,6 +4783,15 @@
       "integrity": "sha1-sxxa6CVIRKOoKBVBzisEuGWnNP8=",
       "dev": true
     },
+    "unique-string": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/unique-string/-/unique-string-1.0.0.tgz",
+      "integrity": "sha1-nhBXzKhRq7kzmPizOuGHuZyuwRo=",
+      "dev": true,
+      "requires": {
+        "crypto-random-string": "^1.0.0"
+      }
+    },
     "unist-util-find-all-after": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/unist-util-find-all-after/-/unist-util-find-all-after-1.0.5.tgz",
@@ -5028,6 +4843,12 @@
         "unist-util-is": "^3.0.0"
       }
     },
+    "universalify": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz",
+      "integrity": "sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg==",
+      "dev": true
+    },
     "unset-value": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/unset-value/-/unset-value-1.0.0.tgz",
@@ -5095,12 +4916,6 @@
       "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
       "dev": true
     },
-    "uuid": {
-      "version": "3.3.2",
-      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",
-      "integrity": "sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA==",
-      "dev": true
-    },
     "v8-compile-cache": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/v8-compile-cache/-/v8-compile-cache-2.1.0.tgz",
@@ -5265,13 +5080,37 @@
       "dev": true
     },
     "vscode-languageserver": {
-      "version": "5.2.1",
-      "resolved": "https://registry.npmjs.org/vscode-languageserver/-/vscode-languageserver-5.2.1.tgz",
-      "integrity": "sha512-GuayqdKZqAwwaCUjDvMTAVRPJOp/SLON3mJ07eGsx/Iq9HjRymhKWztX41rISqDKhHVVyFM+IywICyZDla6U3A==",
+      "version": "5.3.0-next.10",
+      "resolved": "https://registry.npmjs.org/vscode-languageserver/-/vscode-languageserver-5.3.0-next.10.tgz",
+      "integrity": "sha512-QL7Fe1FT6PdLtVzwJeZ78pTic4eZbzLRy7yAQgPb9xalqqgZESR0+yDZPwJrM3E7PzOmwHBceYcJR54eQZ7Kng==",
       "dev": true,
       "requires": {
-        "vscode-languageserver-protocol": "3.14.1",
-        "vscode-uri": "^1.0.6"
+        "vscode-languageserver-protocol": "^3.15.0-next.8",
+        "vscode-textbuffer": "^1.0.0"
+      },
+      "dependencies": {
+        "vscode-jsonrpc": {
+          "version": "5.0.0-next.5",
+          "resolved": "https://registry.npmjs.org/vscode-jsonrpc/-/vscode-jsonrpc-5.0.0-next.5.tgz",
+          "integrity": "sha512-k9akfglxWgr0dtLNscq2uBq48XJwnhf4EaDxn05KQowRwR0DkNML0zeYqFRLtXZe6x5vpL5ppyu4o6GqL+23YQ==",
+          "dev": true
+        },
+        "vscode-languageserver-protocol": {
+          "version": "3.15.0-next.14",
+          "resolved": "https://registry.npmjs.org/vscode-languageserver-protocol/-/vscode-languageserver-protocol-3.15.0-next.14.tgz",
+          "integrity": "sha512-xUwwno6Q6RFd2Z2EWV9D3dQlsKPnHyiZMNWq+EC7JJdp2WH1gRlD+KPX4UGRCnJK0WI5omqHV313IESPwRY5xA==",
+          "dev": true,
+          "requires": {
+            "vscode-jsonrpc": "^5.0.0-next.5",
+            "vscode-languageserver-types": "^3.15.0-next.9"
+          }
+        },
+        "vscode-languageserver-types": {
+          "version": "3.15.0-next.9",
+          "resolved": "https://registry.npmjs.org/vscode-languageserver-types/-/vscode-languageserver-types-3.15.0-next.9.tgz",
+          "integrity": "sha512-Rl/8qJ6932nrHCdPn+9y0x08uLVQaSLRG+U4JzhyKpWU4eJbVaDRoAcz1Llj7CErJGbPr6kdBvShPy5fRfR+Uw==",
+          "dev": true
+        }
       }
     },
     "vscode-languageserver-protocol": {
@@ -5306,6 +5145,12 @@
       "integrity": "sha512-zKsFWVzL1wlCezgaI3XiN42IT8DIPM1Qr+G+RBhiU3U0bJCdC8pPELakRCtuVT4wF3gBZjBrUDQ8mowL7hmgwA==",
       "dev": true
     },
+    "vscode-textbuffer": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/vscode-textbuffer/-/vscode-textbuffer-1.0.0.tgz",
+      "integrity": "sha512-zPaHo4urgpwsm+PrJWfNakolRpryNja18SUip/qIIsfhuEqEIPEXMxHOlFPjvDC4JgTaimkncNW7UMXRJTY6ow==",
+      "dev": true
+    },
     "vscode-uri": {
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/vscode-uri/-/vscode-uri-1.0.6.tgz",
@@ -5360,12 +5205,6 @@
       "integrity": "sha1-R0tQhlrzpJqcRlfwWs0UVFj3fYI=",
       "dev": true
     },
-    "xorshift": {
-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/xorshift/-/xorshift-0.2.1.tgz",
-      "integrity": "sha1-/NgiZ+k1HBPw+5xzMH8lMx0pxjo=",
-      "dev": true
-    },
     "xtend": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
diff --git a/package.json b/package.json
index a2192e29..2d461966 100644
--- a/package.json
+++ b/package.json
@@ -8,10 +8,11 @@
     "eslint-config-airbnb-base": "^14.0.0",
     "eslint-plugin-babel": "^5.3.0",
     "eslint-plugin-import": "^2.19.1",
-    "javascript-typescript-langserver": "^2.11.3",
     "pug-lint": "^2.6.0",
     "stylelint": "^12.0.1",
     "stylelint-config-standard": "^19.0.0",
+    "typescript": "^3.7.4",
+    "typescript-language-server": "^0.4.0",
     "vscode-css-languageserver-bin": "^1.4.0",
     "vscode-html-languageserver-bin": "^1.4.0"
   },
diff --git a/slides/ddd-toolkit-2.pug b/slides/ddd-toolkit-2.pug
index b5ddf46b..4a057f79 100644
--- a/slides/ddd-toolkit-2.pug
+++ b/slides/ddd-toolkit-2.pug
@@ -17,7 +17,6 @@ html
             a(href="https://github.com/proofit404") Artem Malyshev
           h6
             a(href="https://twitter.com/proofit404") @proofit404
-          img(src=require("./pics/pycon-logo.png") height="150").plain
         section
           h2 BIO
           ul
diff --git a/slides/pics/pycon-logo.png b/slides/pics/pycon-logo.png
deleted file mode 100644
index 6138cbc8..00000000
Binary files a/slides/pics/pycon-logo.png and /dev/null differ