Add TypeScript

src/os/.gitignore

@@ -0,0 +1,34 @@
+# dependencies (bun install)
+node_modules
+
+# output
+out
+dist
+*.tgz
+
+# code coverage
+coverage
+*.lcov
+
+# logs
+logs
+_.log
+report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json
+
+# dotenv environment variable files
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# caches
+.eslintcache
+.cache
+*.tsbuildinfo
+
+# IntelliJ based IDEs
+.idea
+
+# Finder (MacOS) folder config
+.DS_Store

src/os/bun.lock

@@ -0,0 +1,29 @@
+{
+  "lockfileVersion": 1,
+  "workspaces": {
+    "": {
+      "name": "os",
+      "devDependencies": {
+        "@types/bun": "latest",
+      },
+      "peerDependencies": {
+        "typescript": "^5",
+      },
+    },
+  },
+  "packages": {
+    "@types/bun": ["@types/bun@1.3.2", "", { "dependencies": { "bun-types": "1.3.2" } }, "sha512-t15P7k5UIgHKkxwnMNkJbWlh/617rkDGEdSsDbu+qNHTaz9SKf7aC8fiIlUdD5RPpH6GEkP0cK7WlvmrEBRtWg=="],
+
+    "@types/node": ["@types/node@24.10.1", "", { "dependencies": { "undici-types": "~7.16.0" } }, "sha512-GNWcUTRBgIRJD5zj+Tq0fKOJ5XZajIiBroOF0yvj2bSU1WvNdYS/dn9UxwsujGW4JX06dnHyjV2y9rRaybH0iQ=="],
+
+    "@types/react": ["@types/react@19.2.6", "", { "dependencies": { "csstype": "^3.2.2" } }, "sha512-p/jUvulfgU7oKtj6Xpk8cA2Y1xKTtICGpJYeJXz2YVO2UcvjQgeRMLDGfDeqeRW2Ta+0QNFwcc8X3GH8SxZz6w=="],
+
+    "bun-types": ["bun-types@1.3.2", "", { "dependencies": { "@types/node": "*" }, "peerDependencies": { "@types/react": "^19" } }, "sha512-i/Gln4tbzKNuxP70OWhJRZz1MRfvqExowP7U6JKoI8cntFrtxg7RJK3jvz7wQW54UuvNC8tbKHHri5fy74FVqg=="],
+
+    "csstype": ["csstype@3.2.3", "", {}, "sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ=="],
+
+    "typescript": ["typescript@5.9.3", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw=="],
+
+    "undici-types": ["undici-types@7.16.0", "", {}, "sha512-Zz+aZWSj8LE6zoxD+xrjh4VfkIG8Ya6LvYkZqtUQGJPZjYl53ypCaUwWqo7eI0x66KBGeRo+mlBEkMSeSZ38Nw=="],
+  }
+}

src/os/index.js

@@ -1,21 +0,0 @@
-clearScreen();
-print("Hello, World!");
-
-function clearScreen() {
-  var i = 0;
-  while (i < 80 * 25 * 2) {
-    writeMemory(0xb8000 + i, 0x00);
-    i++;
-  }
-}
-
-function printChar(char, offset) {
-  writeMemory(0xb8000 + offset * 2, char.charCodeAt(0));
-  writeMemory(0xb8000 + offset * 2 + 1, 0x0f); // White on black
-}
-
-function print(str) {
-  for (var i = 0; i < str.length; i++) {
-    printChar(str.charAt(i), i);
-  }
-}

src/os/kernel/index.ts

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+const SCREEN_WIDTH = 80;
+const SCREEN_HEIGHT = 25;
+const VIDEO_MEMORY_START = 0xb8000;
+
+clearScreen();
+print("Welcome to Lints OS!", 0, 0, 0x0a); // Light green on black
+
+function clearScreen(): void {
+  for (var row = 0; row < SCREEN_HEIGHT; row++) {
+    for (var col = 0; col < SCREEN_WIDTH; col++) {
+      const address = VIDEO_MEMORY_START + 2 * (row * SCREEN_WIDTH + col);
+      writeMemory(address, 0x20); // ASCII space
+      writeMemory(address + 1, 0x07); // Light grey on black
+    }
+  }
+}
+
+function writeChar(
+  row: number,
+  col: number,
+  char: string,
+  color: number
+): void {
+  const address = VIDEO_MEMORY_START + 2 * (row * SCREEN_WIDTH + col);
+  writeMemory(address, char.charCodeAt(0));
+  writeMemory(address + 1, color);
+}
+
+function print(text: string, row: number, col: number, color: number): void {
+  for (var i = 0; i < text.length; i++) {
+    writeChar(row, col + i, text[i]!, color);
+  }
+}

src/os/package.json

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+{
+  "name": "os",
+  "module": "index.ts",
+  "type": "module",
+  "private": true,
+  "devDependencies": {
+    "@types/bun": "latest"
+  },
+  "peerDependencies": {
+    "typescript": "^5"
+  }
+}

src/os/tsconfig.json

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+{
+  "compilerOptions": {
+    // Environment setup & latest features
+    "lib": ["ESNext"],
+    "target": "ESNext",
+    "module": "Preserve",
+    "moduleDetection": "force",
+    "jsx": "react-jsx",
+    "allowJs": true,
+
+    // Bundler mode
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "noEmit": true,
+
+    // Best practices
+    "strict": true,
+    "skipLibCheck": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedIndexedAccess": true,
+    "noImplicitOverride": true,
+
+    // Some stricter flags (disabled by default)
+    "noUnusedLocals": false,
+    "noUnusedParameters": false,
+    "noPropertyAccessFromIndexSignature": false
+  }
+}

src/os/types/kernel/functions.d.ts

@@ -0,0 +1 @@
+declare function writeMemory(address: number, value: number): void;