add starting examples

.gitignore

@@ -102,3 +102,10 @@ dist
 
 # TernJS port file
 .tern-port
+
+# OSX
+.DS_Store
+
+
+# Project specific
+yarn.lock

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "typescript.tsdk": "node_modules/typescript/lib"
+}

package.json

@@ -0,0 +1,22 @@
+{
+  "name": "typescript-examples",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/pero5ar/typescript-examples.git"
+  },
+  "author": "",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/pero5ar/typescript-examples/issues"
+  },
+  "homepage": "https://github.com/pero5ar/typescript-examples#readme",
+  "dependencies": {
+    "typescript": "^4.4.2"
+  }
+}

tsconfig.json

@@ -0,0 +1,13 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "target": "es2020",
+        "jsx": "preserve",
+        "strictFunctionTypes": true,
+        "sourceMap": true
+    },
+    "exclude": [
+        "node_modules",
+        "**/node_modules/*"
+    ]
+}

types101.ts

@@ -0,0 +1,53 @@
+// All the basic types one might need
+
+// JS Primitives
+
+let _number: number = 0;
+let _string: string = 'str';
+let _boolean: boolean = true;
+let _symbol: symbol = Symbol();
+let _bigint: bigint = BigInt(9007199254740991);
+let _undefined: undefined = undefined;
+let _null: null = null;
+
+// Objects
+
+let _obj1: object = { a: 'value' };
+let _obj2: {} = { a: 'value' };
+let _obj3: { [key: string]: any; } = { a: 'value' };
+let _obj4: Record<string, any> = { a: 'value' };
+let _obj5: { a: string; } = { a: 'value' };
+
+// Functions
+
+let _fun1: Function = (x: number) => x++;
+let _fun2: (...args: any[]) => any = (x: number) => x++;
+let _fun3: (x: any) => any = (x: number) => x++;
+let _fun4: (x: number) => number = (x: number) => x++;
+
+// Any, unknown, never
+
+function getA1(obj: any) {
+    return obj.a;
+}
+
+function getA2(obj: unknown) {
+    // return obj.a; -> Property 'a' does not exist on type 'unknown'.ts(2339)
+    if (isObjWithA(obj)) {
+        obj.a;
+    }
+    return undefined;
+}
+
+function isObjWithA(obj: unknown): obj is { a: unknown } {
+    return typeof obj === 'object' && 'a' in obj;
+}
+
+function throwError(msg: string): never {
+    throw new Error(msg);
+}
+
+// TS Literals
+
+let _true: true = true;
+let _successfulResponse: 200 | 201 | 204 = 200;