diff --git a/package-lock.json b/package-lock.json
index 32dae7ec..8e48114f 100644
--- a/package-lock.json
+++ b/package-lock.json
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-      "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.23.1.tgz",
-      "integrity": "sha512-iE5Cu4rGEDk7ONRjisTOjVHv3dDtcFfwitSxT7evtYj/rANJpt1OuC/Kozh1pBa99AUBr1L/LsaNB+D9Xz3CEg==",
+      "version": "4.25.1",
+      "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.25.1.tgz",
+      "integrity": "sha512-T0GU/3NRtO4tMfNzsvpdhUr8HnzA4LTdP2zd+e5zd6CdOH5vNKHnAlO+DvzccfhPdzqRrALOFcjYxx7K5DWmvA==",
       "dev": true,
       "requires": {
-        "@webassemblyjs/ast": "1.7.10",
-        "@webassemblyjs/helper-module-context": "1.7.10",
-        "@webassemblyjs/wasm-edit": "1.7.10",
-        "@webassemblyjs/wasm-parser": "1.7.10",
+        "@webassemblyjs/ast": "1.7.11",
+        "@webassemblyjs/helper-module-context": "1.7.11",
+        "@webassemblyjs/wasm-edit": "1.7.11",
+        "@webassemblyjs/wasm-parser": "1.7.11",
         "acorn": "^5.6.2",
         "acorn-dynamic-import": "^3.0.0",
         "ajv": "^6.1.0",
@@ -6387,41 +6250,137 @@
         "webpack-sources": "^1.3.0"
       },
       "dependencies": {
-        "ajv": {
-          "version": "6.5.4",
-          "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.5.4.tgz",
-          "integrity": "sha512-4Wyjt8+t6YszqaXnLDfMmG/8AlO5Zbcsy3ATHncCzjW/NoPzAId8AK6749Ybjmdt+kUY1gP60fCu46oDxPv/mg==",
+        "cacache": {
+          "version": "10.0.4",
+          "resolved": "http://registry.npmjs.org/cacache/-/cacache-10.0.4.tgz",
+          "integrity": "sha512-Dph0MzuH+rTQzGPNT9fAnrPmMmjKfST6trxJeK7NQuHRaVw24VzPRWTmg9MpcwOVQZO0E1FBICUlFeNaKPIfHA==",
           "dev": true,
           "requires": {
-            "fast-deep-equal": "^2.0.1",
-            "fast-json-stable-stringify": "^2.0.0",
-            "json-schema-traverse": "^0.4.1",
-            "uri-js": "^4.2.2"
+            "bluebird": "^3.5.1",
+            "chownr": "^1.0.1",
+            "glob": "^7.1.2",
+            "graceful-fs": "^4.1.11",
+            "lru-cache": "^4.1.1",
+            "mississippi": "^2.0.0",
+            "mkdirp": "^0.5.1",
+            "move-concurrently": "^1.0.1",
+            "promise-inflight": "^1.0.1",
+            "rimraf": "^2.6.2",
+            "ssri": "^5.2.4",
+            "unique-filename": "^1.1.0",
+            "y18n": "^4.0.0"
           }
         },
-        "enhanced-resolve": {
-          "version": "4.1.0",
-          "resolved": "https://registry.npmjs.org/enhanced-resolve/-/enhanced-resolve-4.1.0.tgz",
-          "integrity": "sha512-F/7vkyTtyc/llOIn8oWclcB25KdRaiPBpZYDgJHgh/UHtpgT2p2eldQgtQnLtUvfMKPKxbRaQM/hHkvLHt1Vng==",
+        "find-cache-dir": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/find-cache-dir/-/find-cache-dir-1.0.0.tgz",
+          "integrity": "sha1-kojj6ePMN0hxfTnq3hfPcfww7m8=",
           "dev": true,
           "requires": {
-            "graceful-fs": "^4.1.2",
-            "memory-fs": "^0.4.0",
-            "tapable": "^1.0.0"
+            "commondir": "^1.0.1",
+            "make-dir": "^1.0.0",
+            "pkg-dir": "^2.0.0"
           }
         },
-        "fast-deep-equal": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-2.0.1.tgz",
-          "integrity": "sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk=",
-          "dev": true
+        "find-up": {
+          "version": "2.1.0",
+          "resolved": "https://registry.npmjs.org/find-up/-/find-up-2.1.0.tgz",
+          "integrity": "sha1-RdG35QbHF93UgndaK3eSCjwMV6c=",
+          "dev": true,
+          "requires": {
+            "locate-path": "^2.0.0"
+          }
         },
-        "json-schema-traverse": {
-          "version": "0.4.1",
-          "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz",
-          "integrity": "sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==",
+        "locate-path": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-2.0.0.tgz",
+          "integrity": "sha1-K1aLJl7slExtnA3pw9u7ygNUzY4=",
+          "dev": true,
+          "requires": {
+            "p-locate": "^2.0.0",
+            "path-exists": "^3.0.0"
+          }
+        },
+        "mississippi": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/mississippi/-/mississippi-2.0.0.tgz",
+          "integrity": "sha512-zHo8v+otD1J10j/tC+VNoGK9keCuByhKovAvdn74dmxJl9+mWHnx6EMsDN4lgRoMI/eYo2nchAxniIbUPb5onw==",
+          "dev": true,
+          "requires": {
+            "concat-stream": "^1.5.0",
+            "duplexify": "^3.4.2",
+            "end-of-stream": "^1.1.0",
+            "flush-write-stream": "^1.0.0",
+            "from2": "^2.1.0",
+            "parallel-transform": "^1.1.0",
+            "pump": "^2.0.1",
+            "pumpify": "^1.3.3",
+            "stream-each": "^1.1.0",
+            "through2": "^2.0.0"
+          }
+        },
+        "p-limit": {
+          "version": "1.3.0",
+          "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-1.3.0.tgz",
+          "integrity": "sha512-vvcXsLAJ9Dr5rQOPk7toZQZJApBl2K4J6dANSsEuh6QI41JYcsS/qhTGa9ErIUUgK3WNQoJYvylxvjqmiqEA9Q==",
+          "dev": true,
+          "requires": {
+            "p-try": "^1.0.0"
+          }
+        },
+        "p-locate": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-2.0.0.tgz",
+          "integrity": "sha1-IKAQOyIqcMj9OcwuWAaA893l7EM=",
+          "dev": true,
+          "requires": {
+            "p-limit": "^1.1.0"
+          }
+        },
+        "p-try": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/p-try/-/p-try-1.0.0.tgz",
+          "integrity": "sha1-y8ec26+P1CKOE/Yh8rGiN8GyB7M=",
           "dev": true
         },
+        "pkg-dir": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/pkg-dir/-/pkg-dir-2.0.0.tgz",
+          "integrity": "sha1-9tXREJ4Z1j7fQo4L1X4Sd3YVM0s=",
+          "dev": true,
+          "requires": {
+            "find-up": "^2.1.0"
+          }
+        },
+        "pump": {
+          "version": "2.0.1",
+          "resolved": "https://registry.npmjs.org/pump/-/pump-2.0.1.tgz",
+          "integrity": "sha512-ruPMNRkN3MHP1cWJc9OWr+T/xDP0jhXYCLfJcBuX54hhfIBnaQmAUMfDcG4DM5UMWByBbJY69QSphm3jtDKIkA==",
+          "dev": true,
+          "requires": {
+            "end-of-stream": "^1.1.0",
+            "once": "^1.3.1"
+          }
+        },
+        "schema-utils": {
+          "version": "0.4.7",
+          "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-0.4.7.tgz",
+          "integrity": "sha512-v/iwU6wvwGK8HbU9yi3/nhGzP0yGSuhQMzL6ySiec1FSrZZDkhm4noOSWzrNFo/jEc+SJY6jRTwuwbSXJPDUnQ==",
+          "dev": true,
+          "requires": {
+            "ajv": "^6.1.0",
+            "ajv-keywords": "^3.1.0"
+          }
+        },
+        "ssri": {
+          "version": "5.3.0",
+          "resolved": "https://registry.npmjs.org/ssri/-/ssri-5.3.0.tgz",
+          "integrity": "sha512-XRSIPqLij52MtgoQavH/x/dU1qVKtWUAAZeOHsR9c2Ddi4XerFy3mc1alf+dLJKl9EUIm/Ht+EowFkTUOA6GAQ==",
+          "dev": true,
+          "requires": {
+            "safe-buffer": "^5.1.1"
+          }
+        },
         "tapable": {
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/tapable/-/tapable-1.1.0.tgz",
@@ -6443,16 +6402,6 @@
             "webpack-sources": "^1.1.0",
             "worker-farm": "^1.5.2"
           }
-        },
-        "webpack-sources": {
-          "version": "1.3.0",
-          "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.3.0.tgz",
-          "integrity": "sha512-OiVgSrbGu7NEnEvQJJgdSFPl2qWKkWq5lHMhgiToIiN9w34EBnjYzSYs+VbL5KoYiLNtFFa7BZIKxRED3I32pA==",
-          "dev": true,
-          "requires": {
-            "source-list-map": "^2.0.0",
-            "source-map": "~0.6.1"
-          }
         }
       }
     },
@@ -6536,9 +6485,9 @@
       "dev": true
     },
     "webpack-sources": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.1.0.tgz",
-      "integrity": "sha512-aqYp18kPphgoO5c/+NaUvEeACtZjMESmDChuD3NBciVpah3XpMEU9VAAtIaB1BsfJWWTSdv8Vv1m3T0aRk2dUw==",
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.3.0.tgz",
+      "integrity": "sha512-OiVgSrbGu7NEnEvQJJgdSFPl2qWKkWq5lHMhgiToIiN9w34EBnjYzSYs+VbL5KoYiLNtFFa7BZIKxRED3I32pA==",
       "dev": true,
       "requires": {
         "source-list-map": "^2.0.0",
@@ -6549,7 +6498,6 @@
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/which/-/which-1.3.0.tgz",
       "integrity": "sha512-xcJpopdamTuY5duC/KnTTNBraPK54YwpenP4lzxU8H91GudWpFv38u0CKjclE1Wi2EH2EDz5LRcHcKbCIzqGyg==",
-      "dev": true,
       "requires": {
         "isexe": "^2.0.0"
       }
@@ -6561,18 +6509,17 @@
       "dev": true
     },
     "worker-farm": {
-      "version": "1.5.4",
-      "resolved": "https://registry.npmjs.org/worker-farm/-/worker-farm-1.5.4.tgz",
-      "integrity": "sha512-ITyClEvcfv0ozqJl1vmWFWhvI+OIrkbInYqkEPE50wFPXj8J9Gd3FYf8+CkZJXJJsQBYe+2DvmoK9Zhx5w8W+w==",
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/worker-farm/-/worker-farm-1.6.0.tgz",
+      "integrity": "sha512-6w+3tHbM87WnSWnENBUvA2pxJPLhQUg5LKwUQHq3r+XPhIM+Gh2R5ycbwPCyuGbNg+lPgdcnQUhuC02kJCvffQ==",
       "dev": true,
       "requires": {
-        "errno": "~0.1.7",
-        "xtend": "~4.0.1"
+        "errno": "~0.1.7"
       }
     },
     "wrap-ansi": {
       "version": "2.1.0",
-      "resolved": "http://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
       "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
       "dev": true,
       "requires": {
@@ -6629,8 +6576,7 @@
     "yallist": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
-      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
-      "dev": true
+      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI="
     },
     "yargs": {
       "version": "12.0.2",
@@ -6707,13 +6653,13 @@
       }
     },
     "yauzl": {
-      "version": "2.9.1",
-      "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.9.1.tgz",
-      "integrity": "sha1-qBmB6nCleUYTOIPwKcWCGok1mn8=",
+      "version": "2.10.0",
+      "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.10.0.tgz",
+      "integrity": "sha1-x+sXyT4RLLEIb6bY5R+wZnt5pfk=",
       "dev": true,
       "requires": {
         "buffer-crc32": "~0.2.3",
-        "fd-slicer": "~1.0.1"
+        "fd-slicer": "~1.1.0"
       }
     },
     "yazl": {
diff --git a/package.json b/package.json
index 5d24323e..894f7fd1 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   "version": "0.0.8",
   "publisher": "getgauge",
   "engines": {
-    "vscode": "^1.25.0"
+    "vscode": "^1.28.2"
   },
   "categories": [
     "Languages"
@@ -284,29 +284,28 @@
     "publish": "vsce publish"
   },
   "devDependencies": {
-    "@types/fs-extra": "^5.0.1",
-    "@types/mocha": "^2.2.42",
-    "@types/node": "^9.6.14",
-    "cross-env": "^5.1.4",
-    "ts-loader": "4.0.1",
-    "tslint": "5.9.1",
-    "typescript": "^2.8.3",
-    "uglify-es": "3.3.9",
-    "uglifyjs-webpack-plugin": "1.2.2",
-    "vsce": "^1.40.0",
-    "vscode": "^1.1.18",
-    "webpack": "4.23.1",
+    "@types/fs-extra": "^5.0.4",
+    "@types/mocha": "^5.2.5",
+    "@types/node": "^10.12.5",
+    "cross-env": "^5.2.0",
+    "ts-loader": "5.3.0",
+    "tslint": "^5.11.0",
+    "typescript": "^3.1.6",
+    "terser-webpack-plugin": "1.1.0",
+    "vsce": "^1.53.0",
+    "vscode": "^1.1.21",
+    "webpack": "4.25.1",
     "webpack-cli": "^3.1.2",
     "webpack-node-externals": "^1.7.2"
   },
   "dependencies": {
     "adm-zip": "^0.4.11",
-    "copy-paste": "^1.3.0",
-    "fs-extra": "5.0.0",
-    "get-port": "^3.2.0",
-    "opn": "^5.1.0",
-    "vscode-jsonrpc": "^3.6.0",
-    "vscode-languageclient": "^4.0.0",
-    "vscode-languageserver-protocol": "^3.6.0"
+    "clipboardy": "^1.2.3",
+    "fs-extra": "^7.0.1",
+    "get-port": "^4.0.0",
+    "opn": "^5.4.0",
+    "vscode-jsonrpc": "^4.0.0",
+    "vscode-languageclient": "^5.1.1",
+    "vscode-languageserver-protocol": "^3.13.0"
   }
 }
diff --git a/src/annotator/generateStub.ts b/src/annotator/generateStub.ts
index 639d2f03..65e4fe0e 100644
--- a/src/annotator/generateStub.ts
+++ b/src/annotator/generateStub.ts
@@ -1,8 +1,10 @@
+'use strict';
+
 import { LanguageClient } from "vscode-languageclient";
 import { commands, workspace, window, CancellationTokenSource, Disposable } from "vscode";
 import * as path from 'path';
 
-import copyPaste = require("copy-paste");
+import clipboardy = require("clipboardy");
 
 import { GaugeVSCodeCommands, GaugeRequests, NEW_FILE, COPY_TO_CLIPBOARD } from "../constants";
 import { FileListItem } from "../types/fileListItem";
@@ -45,7 +47,7 @@ export class GenerateStubCommandProvider implements Disposable {
             window.showQuickPick(this.getFileLists(files, cwd)).then((selected: FileListItem) => {
                 if (!selected) return;
                 if (selected.isCopyToClipBoard()) {
-                    copyPaste.copy(code);
+                    clipboardy.writeSync(code);
                     window.showInformationMessage("Step Implementation copied to clipboard");
                 } else {
                     let params = { implementationFilePath: selected.value, codes: [code] };
diff --git a/src/config/configProvider.ts b/src/config/configProvider.ts
index 650183f1..c1a33591 100644
--- a/src/config/configProvider.ts
+++ b/src/config/configProvider.ts
@@ -1,3 +1,5 @@
+'use strict';
+
 import { Disposable, ExtensionContext, window, commands, workspace, ConfigurationTarget } from "vscode";
 import { VSCodeCommands, GaugeVSCodeCommands } from "../constants";
 
diff --git a/src/explorer/specExplorer.ts b/src/explorer/specExplorer.ts
index b271e73c..44aa0fcc 100644
--- a/src/explorer/specExplorer.ts
+++ b/src/explorer/specExplorer.ts
@@ -1,7 +1,6 @@
 'use strict';
 
 import * as vscode from 'vscode';
-import * as fs from 'fs';
 import * as path from 'path';
 import { LanguageClient, TextDocumentIdentifier } from 'vscode-languageclient';
 import { GaugeVSCodeCommands, GaugeRequests, setCommandContext, GaugeCommandContext } from '../constants';
@@ -9,7 +8,6 @@ import {
     commands, workspace, TextDocument, Uri, Position, Range, window,
     TextDocumentShowOptions, TextEditor, Disposable
 } from 'vscode';
-import { GaugeExecutor } from '../execution/gaugeExecutor';
 import { GaugeWorkspace } from '../gaugeWorkspace';
 
 const extensions = [".spec", ".md"];
diff --git a/src/extension.ts b/src/extension.ts
index 53476a77..1c721a42 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -1,5 +1,4 @@
 'use strict';
-import * as path from 'path';
 
 import {
     workspace, ExtensionContext, extensions,
@@ -18,7 +17,6 @@ import { ProjectInitializer } from './init/projectInit';
 import { ConfigProvider } from './config/configProvider';
 import { isGaugeProject } from './util';
 import { showWelcomePage } from './pages/welcome';
-import { execSync } from 'child_process';
 
 const GAUGE_EXTENSION_ID = 'getgauge.gauge';
 const GAUGE_VSCODE_VERSION = 'gauge.version';
diff --git a/src/file/specificationFileProvider.ts b/src/file/specificationFileProvider.ts
index 3ea54a18..1c068b7e 100644
--- a/src/file/specificationFileProvider.ts
+++ b/src/file/specificationFileProvider.ts
@@ -1,3 +1,5 @@
+'use strict';
+
 import * as fs from "fs-extra";
 import * as path from "path";
 import { EOL } from "os";
diff --git a/src/gaugeReference.ts b/src/gaugeReference.ts
index 2ffbf5c5..c8e83da0 100644
--- a/src/gaugeReference.ts
+++ b/src/gaugeReference.ts
@@ -1,3 +1,5 @@
+'use strict';
+
 import { Disposable, commands, workspace, Uri, CancellationTokenSource, window } from "vscode";
 import { GaugeVSCodeCommands, VSCodeCommands } from "./constants";
 import {
diff --git a/src/gaugeState.ts b/src/gaugeState.ts
index 83f3546d..02cab7a9 100644
--- a/src/gaugeState.ts
+++ b/src/gaugeState.ts
@@ -1,3 +1,5 @@
+'use strict';
+
 import { Disposable, ExtensionContext } from "vscode";
 import * as path from 'path';
 import { LAST_REPORT_PATH } from "./constants";
diff --git a/src/gaugeVersion.ts b/src/gaugeVersion.ts
index 11c9c9be..f3b34d4a 100644
--- a/src/gaugeVersion.ts
+++ b/src/gaugeVersion.ts
@@ -1,3 +1,5 @@
+'use strict';
+
 import { spawnSync } from 'child_process';
 import { GaugeCommands } from './constants';
 import { getGaugeCommand } from './util';
diff --git a/src/gaugeWorkspace.proposed.ts b/src/gaugeWorkspace.proposed.ts
index fa21d20f..5ef6deaf 100644
--- a/src/gaugeWorkspace.proposed.ts
+++ b/src/gaugeWorkspace.proposed.ts
@@ -1,9 +1,9 @@
+'use strict';
+
 import { workspace, Disposable } from 'vscode';
-import { DynamicFeature, RegistrationData, BaseLanguageClient, NextSignature } from 'vscode-languageclient';
+import { DynamicFeature, RegistrationData, BaseLanguageClient } from 'vscode-languageclient';
 
-import {
-    ClientCapabilities, InitializedParams, RPCMessageType, CancellationToken
-} from 'vscode-languageserver-protocol';
+import { ClientCapabilities, InitializedParams, RPCMessageType } from 'vscode-languageserver-protocol';
 
 import { SaveFilesRequest, GaugeClientCapabilities } from './protocol/gauge.proposed';
 
@@ -28,7 +28,7 @@ export class GaugeWorkspaceFeature implements DynamicFeature<undefined> {
 
     public initialize(): void {
         let client = this._client;
-        client.onRequest(SaveFilesRequest.type, (token: CancellationToken) => {
+        client.onRequest(SaveFilesRequest.type, () => {
             return workspace.saveAll(false).then(() => {
                 return null;
             });
diff --git a/src/init/projectInit.ts b/src/init/projectInit.ts
index d8977733..0656d32a 100644
--- a/src/init/projectInit.ts
+++ b/src/init/projectInit.ts
@@ -1,10 +1,12 @@
+'use strict';
+
 import * as os from 'os';
 import * as path from 'path';
 import { get } from 'https';
 
 import * as fs from 'fs-extra';
 
-import { ExtensionContext, Disposable, commands, window, Uri, workspace, QuickPickItem, Progress } from 'vscode';
+import { Disposable, commands, window, Uri, workspace, Progress } from 'vscode';
 
 import AdmZip = require('adm-zip');
 
diff --git a/src/pages/page.ts b/src/pages/page.ts
index b8122efe..971e2984 100644
--- a/src/pages/page.ts
+++ b/src/pages/page.ts
@@ -1,3 +1,5 @@
+'use strict';
+
 export interface Page {
     content(activated: Boolean): string | Thenable<string>;
 }
\ No newline at end of file
diff --git a/src/pages/provider.ts b/src/pages/provider.ts
index ce68b41a..d213f1be 100644
--- a/src/pages/provider.ts
+++ b/src/pages/provider.ts
@@ -1,3 +1,5 @@
+'use strict';
+
 import { TextDocumentContentProvider, Disposable, Uri, Event, ExtensionContext, EventEmitter, workspace } from "vscode";
 import { Page } from "./page";
 import { WelcomePage } from "./welcome";
diff --git a/src/pages/report.ts b/src/pages/report.ts
index f5850af8..22ccb4ff 100644
--- a/src/pages/report.ts
+++ b/src/pages/report.ts
@@ -1,4 +1,6 @@
-import {Disposable, workspace, Uri, ExtensionContext, commands, ViewColumn, window} from 'vscode';
+'use strict';
+
+import {Disposable, workspace, Uri, ExtensionContext, commands, ViewColumn} from 'vscode';
 import {Page} from "./page";
 import * as path from 'path';
 import {LAST_REPORT_PATH, GaugeVSCodeCommands, VSCodeCommands, REPORT_URI} from "../constants";
diff --git a/src/pages/welcome.ts b/src/pages/welcome.ts
index 0bfb7bc6..65ed8ba5 100644
--- a/src/pages/welcome.ts
+++ b/src/pages/welcome.ts
@@ -1,3 +1,5 @@
+'use strict';
+
 import { Disposable, Uri, workspace, commands, ViewColumn, window, ExtensionContext, TextDocument } from "vscode";
 import { GaugeVSCodeCommands, VSCodeCommands, WELCOME_PAGE_URI } from "../constants";
 import * as path from 'path';
diff --git a/src/pages/welcomePageTokenReplace.ts b/src/pages/welcomePageTokenReplace.ts
index a907d3a2..8be73d16 100644
--- a/src/pages/welcomePageTokenReplace.ts
+++ b/src/pages/welcomePageTokenReplace.ts
@@ -1,3 +1,5 @@
+'use strict';
+
 import { spawnSync } from "child_process";
 import { getGaugeVersionInfo } from '../gaugeVersion';
 
diff --git a/src/refactor/workspaceEditor.ts b/src/refactor/workspaceEditor.ts
index cb7ca3c9..9d98c8a9 100644
--- a/src/refactor/workspaceEditor.ts
+++ b/src/refactor/workspaceEditor.ts
@@ -1,3 +1,5 @@
+'use strict';
+
 import {
     WorkspaceEdit, window, workspace, TextDocument, TextEdit, Uri, TextEditor,
     TextDocumentShowOptions, Position, Range
diff --git a/src/terminal/terminal.ts b/src/terminal/terminal.ts
index 4f488fdf..d8fd7245 100644
--- a/src/terminal/terminal.ts
+++ b/src/terminal/terminal.ts
@@ -1,3 +1,5 @@
+'use strict';
+
 import { Disposable, window, ExtensionContext, commands, Terminal } from "vscode";
 import { GaugeVSCodeCommands } from "../constants";
 
diff --git a/src/types/fileListItem.ts b/src/types/fileListItem.ts
index 8d4cbb06..de421e62 100644
--- a/src/types/fileListItem.ts
+++ b/src/types/fileListItem.ts
@@ -1,4 +1,5 @@
-import * as path from 'path';
+'use strict';
+
 import { QuickPickItem } from 'vscode';
 import { COPY_TO_CLIPBOARD } from '../constants';
 
diff --git a/test/execution/execution.test.ts b/test/execution/execution.test.ts
index 89491bcd..de308eb2 100644
--- a/test/execution/execution.test.ts
+++ b/test/execution/execution.test.ts
@@ -1,6 +1,5 @@
 import * as assert from 'assert';
 import * as path from 'path';
-import { TextDocument } from 'vscode-languageclient/lib/main';
 import { Uri, commands, window, workspace } from 'vscode';
 import { GaugeVSCodeCommands, REPORT_URI } from '../../src/constants';
 
@@ -48,7 +47,7 @@ suite('Gauge Execution Tests', () => {
 
     test('should execute scenario at cursor', async () => {
         let specFile = Uri.file(path.join(testDataPath, 'specs', 'example.spec'));
-        let editor = await window.showTextDocument(specFile);
+        await window.showTextDocument(specFile);
         await commands.executeCommand("workbench.action.focusFirstEditorGroup");
         let cm = { to: 'down', by: 'line', value: 8 };
         await commands.executeCommand("cursorMove", cm);
diff --git a/test/gauge.test.ts b/test/gauge.test.ts
index afd191a8..6a9d17e2 100644
--- a/test/gauge.test.ts
+++ b/test/gauge.test.ts
@@ -3,8 +3,6 @@ import * as vscode from 'vscode';
 import * as path from 'path';
 
 suite('Gauge Extension Tests', () => {
-    let testDataPath = path.join(__dirname, '..', '..', 'test', 'testdata', 'sampleProject');
-
     test('should activate when manifest file found in path', () => {
         assert.ok(vscode.extensions.getExtension('getgauge.gauge').isActive);
     });
diff --git a/test/pages/welcome.test.ts b/test/pages/welcome.test.ts
index 312c013d..d6ae4ebc 100644
--- a/test/pages/welcome.test.ts
+++ b/test/pages/welcome.test.ts
@@ -1,5 +1,5 @@
 import * as assert from 'assert';
-import { commands, window, workspace } from 'vscode';
+import { commands, workspace } from 'vscode';
 import { GaugeVSCodeCommands, WELCOME_PAGE_URI } from '../../src/constants';
 
 suite('Welcome Page', () => {
diff --git a/test/pages/welcomePageTokenReplace.test.ts b/test/pages/welcomePageTokenReplace.test.ts
index 9cf67cb3..d75fa70b 100644
--- a/test/pages/welcomePageTokenReplace.test.ts
+++ b/test/pages/welcomePageTokenReplace.test.ts
@@ -1,7 +1,5 @@
 import * as assert from 'assert';
 import { WelcomePageTokenReplace } from '../../src/pages/welcomePageTokenReplace';
-import * as vscode from 'vscode';
-import { platform } from 'os';
 
 suite('Welcome Page', () => {
     setup(() => {
diff --git a/test/references.test.ts b/test/references.test.ts
index 0402516d..53718e48 100644
--- a/test/references.test.ts
+++ b/test/references.test.ts
@@ -1,31 +1,27 @@
 import * as assert from 'assert';
+import { commands, Uri, window } from 'vscode';
 import * as path from 'path';
-import vscode = require('vscode');
-import { TextDocument } from 'vscode-languageclient/lib/main';
-import { connect } from 'tls';
 
 let testDataPath = path.join(__dirname, '..', '..', 'test', 'testdata', 'sampleProject');
 
 suite('Gauge References Tests', () => {
     setup(async () => {
-        await vscode.commands.executeCommand('workbench.action.closeAllEditors');
+        await commands.executeCommand('workbench.action.closeAllEditors');
     });
 
     test('should show references for step at cursor', async () => {
-        let specFile = vscode.Uri.file(path.join(testDataPath, 'tests', 'step_implementation.js'));
-        let editor = await vscode.window.showTextDocument(specFile)
-        await vscode.commands.executeCommand("workbench.action.focusFirstEditorGroup")
-        await vscode.commands.executeCommand("cursorMove", { to: 'down', by: 'line', value: 18 })
-        let value = await vscode.commands.executeCommand('gauge.showReferences.atCursor')
+        let implFile = Uri.file(path.join(testDataPath, 'tests', 'step_implementation.js'));
+        await window.showTextDocument(implFile);
+        await commands.executeCommand("workbench.action.focusFirstEditorGroup");
+        await commands.executeCommand("cursorMove", { to: 'down', by: 'line', value: 18 });
+        let value = await commands.executeCommand('gauge.showReferences.atCursor');
         assert.ok(value);
     }).timeout(10000);
 
     test('should not show any reference if cursor is not in step context', async () => {
-        let specFile = vscode.Uri.file(path.join(testDataPath, 'tests', 'step_implementation.js'));
-        let editor = await vscode.window.showTextDocument(specFile);
-        await vscode.commands.executeCommand("workbench.action.focusFirstEditorGroup");
-        await vscode.commands.executeCommand("cursorMove", { to: 'down', by: 'line', value: 20 });
-        let value = vscode.commands.executeCommand('gauge.showReferences.atCursor')
+        await commands.executeCommand("workbench.action.focusFirstEditorGroup");
+        await commands.executeCommand("cursorMove", { to: 'down', by: 'line', value: 20 });
+        let value = commands.executeCommand('gauge.showReferences.atCursor');
         assert.notEqual(value, true);
     }).timeout(10000);
 });
diff --git a/webpack.config.js b/webpack.config.js
index 4ac309b3..faa62f41 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -2,7 +2,7 @@
 const webpack = require('webpack');
 const path = require('path');
 const nodeExternals = require('webpack-node-externals');
-const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
+const TerserPlugin = require('terser-webpack-plugin');
 
 module.exports = function(env, argv) {
     if (env === undefined) {
@@ -14,11 +14,11 @@ module.exports = function(env, argv) {
     const sourceMaps = !env.production;
 
     const plugins = [
-    	new webpack.optimize.ModuleConcatenationPlugin(),
-    	new UglifyJsPlugin({
+        new webpack.optimize.ModuleConcatenationPlugin(),
+        new TerserPlugin({
             parallel: true,
             sourceMap: sourceMaps,
-            uglifyOptions: {
+            terserOptions: {
                 ecma: 8,
                 compress: minify ? {} : false,
                 mangle: minify,
@@ -45,7 +45,7 @@ module.exports = function(env, argv) {
         externals: [
             nodeExternals()
         ],
-        devtool: sourceMaps ? 'inline-source-map' : false,
+        devtool: sourceMaps ? 'source-map' : false,
         module: {
             rules: [
                 {