Switch internal scripts to ts

Also adds a formatting script and runs it against all TS files in the samples

.scripts/format.ts

@@ -0,0 +1,82 @@
+import * as fs from 'fs';
+import * as glob from 'glob';
+import * as ts from 'typescript';
+
+class LanguageServiceHost implements ts.LanguageServiceHost {
+	files: ts.MapLike<ts.IScriptSnapshot> = {};
+	addFile(fileName: string, text: string) {
+		this.files[fileName] = ts.ScriptSnapshot.fromString(text);
+	}
+
+	fileExists(path: string): boolean {
+		return !!this.files[path];
+	}
+
+	readFile(path: string): string | undefined {
+		return this.files[path]?.getText(0, this.files[path]!.getLength());
+	}
+
+	// for ts.LanguageServiceHost
+
+	getCompilationSettings = () => ts.getDefaultCompilerOptions();
+	getScriptFileNames = () => Object.keys(this.files);
+	getScriptVersion = (_fileName: string) => '0';
+	getScriptSnapshot = (fileName: string) => this.files[fileName];
+	getCurrentDirectory = () => process.cwd();
+	getDefaultLibFileName = (options: ts.CompilerOptions) => ts.getDefaultLibFilePath(options);
+}
+
+const defaults: ts.FormatCodeSettings = {
+	baseIndentSize: 0,
+	indentSize: 4,
+	tabSize: 4,
+	indentStyle: ts.IndentStyle.Smart,
+	newLineCharacter: '\r\n',
+	convertTabsToSpaces: false,
+	insertSpaceAfterCommaDelimiter: true,
+	insertSpaceAfterSemicolonInForStatements: true,
+	insertSpaceBeforeAndAfterBinaryOperators: true,
+	insertSpaceAfterConstructor: false,
+	insertSpaceAfterKeywordsInControlFlowStatements: true,
+	insertSpaceAfterFunctionKeywordForAnonymousFunctions: false,
+	insertSpaceAfterOpeningAndBeforeClosingNonemptyParenthesis: false,
+	insertSpaceAfterOpeningAndBeforeClosingNonemptyBrackets: false,
+	insertSpaceAfterOpeningAndBeforeClosingNonemptyBraces: true,
+	insertSpaceAfterOpeningAndBeforeClosingTemplateStringBraces: false,
+	insertSpaceAfterOpeningAndBeforeClosingJsxExpressionBraces: false,
+	insertSpaceAfterTypeAssertion: false,
+	insertSpaceBeforeFunctionParenthesis: false,
+	placeOpenBraceOnNewLineForFunctions: false,
+	placeOpenBraceOnNewLineForControlBlocks: false,
+	insertSpaceBeforeTypeAnnotation: false,
+};
+
+function format(fileName: string, text: string) {
+
+	const host = new LanguageServiceHost();
+	host.addFile(fileName, text);
+
+	const languageService = ts.createLanguageService(host);
+	const edits = languageService.getFormattingEditsForDocument(fileName, { ...defaults });
+	edits
+		.sort((a, b) => a.span.start - b.span.start)
+		.reverse()
+		.forEach(edit => {
+			const head = text.slice(0, edit.span.start);
+			const tail = text.slice(edit.span.start + edit.span.length);
+			text = `${head}${edit.newText}${tail}`;
+		});
+
+	return text;
+}
+
+if (require.main === module) {
+	glob.sync(`${__dirname}/../**/*.ts`).forEach((file) => {
+		if (file.endsWith('.d.ts') || file.includes('node_modules')) {
+			return;
+		}
+
+		const out = format(file, fs.readFileSync(file, 'utf8'));
+		fs.writeFileSync(file, out);
+	});
+}