Enforce core layering and enable strict

Part of #1507
Part of #1319

src/common/tsconfig.json

@@ -7,6 +7,7 @@
     "rootDir": ".",
     "noEmit": true,
     "strict": true,
+    "pretty": true,
     "types": [
       "../../node_modules/@types/mocha",
       "../../"

src/core/data/Charsets.ts

@@ -10,12 +10,12 @@ import { ICharset } from '../Types';
  * to be represented within the terminal with only 8-bit encoding. See ISO 2022
  * for a discussion on character sets. Only VT100 character sets are supported.
  */
-export const CHARSETS: { [key: string]: ICharset } = {};
+export const CHARSETS: { [key: string]: ICharset | null } = {};
 
 /**
  * The default character set, US.
  */
-export const DEFAULT_CHARSET: ICharset = CHARSETS['B'];
+export const DEFAULT_CHARSET: ICharset | null = CHARSETS['B'];
 
 /**
  * DEC Special Character and Line Drawing Set.

src/core/input/Keyboard.test.ts

@@ -2,6 +2,7 @@
 import { assert } from 'chai';
 import { evaluateKeyboardEvent } from './Keyboard';
 import { IKeyboardResult } from '../Types';
+import { IKeyboardEvent } from '../../common/Types';
 
 /**
  * A helper function for testing which allows passing in a partial event and defaults will be filled
@@ -20,12 +21,12 @@ function testEvaluateKeyboardEvent(partialEvent: {
   isMac?: boolean;
   macOptionIsMeta?: boolean;
 } = {}): IKeyboardResult {
-  const event = {
+  const event: IKeyboardEvent = {
     altKey: partialEvent.altKey || false,
     ctrlKey: partialEvent.ctrlKey || false,
     shiftKey: partialEvent.shiftKey || false,
     metaKey: partialEvent.metaKey || false,
-    keyCode: partialEvent.keyCode !== undefined ? partialEvent.keyCode : undefined,
+    keyCode: partialEvent.keyCode !== undefined ? partialEvent.keyCode : 0,
     key: partialEvent.key || '',
     type: partialEvent.type || ''
   };

src/core/tsconfig.json

@@ -0,0 +1,20 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "lib": [
+      "es5"
+    ],
+    "rootDir": ".",
+    "noEmit": true,
+    "strict": true,
+    "pretty": true,
+    "types": [
+      "../../node_modules/@types/mocha",
+      "../../"
+    ]
+  },
+  "include": [
+    "./**/*",
+    "../common/**/*"
+  ]
+}