Highlighted code blocks inside the app (#1153)

app/MindWork AI Studio/Tools/CodeHighlighting/Languages/JavaScriptCodeRules.cs

@@ -0,0 +1,51 @@
+namespace AIStudio.Tools.CodeHighlighting.Languages;
+
+/// <summary>
+/// How JavaScript code looks to the tokenizer, JSX included, whose tags stay plain.
+/// </summary>
+/// <remarks>
+/// A template literal stays one string, including the expressions within it. A regular expression
+/// literal stays plain: telling it from a division needs the grammar of the language.
+/// </remarks>
+public static class JavaScriptCodeRules
+{
+    /// <summary>
+    /// The keywords of JavaScript, which TypeScript has, too.
+    /// </summary>
+    internal static readonly string[] KEYWORDS =
+    [
+        "async", "await", "break", "case", "catch", "class", "const", "continue", "debugger", "default", "delete", "do",
+        "else", "export", "extends", "finally", "for", "from", "function", "if", "import", "in", "instanceof", "let",
+        "new", "of", "return", "static", "super", "switch", "this", "throw", "try", "typeof", "var", "void", "while",
+        "with", "yield",
+    ];
+
+    /// <summary>
+    /// The words of JavaScript which stand for a value, which TypeScript has, too.
+    /// </summary>
+    internal static readonly string[] LITERALS = ["true", "false", "null", "undefined", "NaN", "Infinity"];
+
+    /// <summary>
+    /// The strings of JavaScript, which TypeScript has, too.
+    /// </summary>
+    internal static readonly IReadOnlyList<CodeStringRule> STRINGS =
+    [
+        new("`", "`", IsMultiline: true),
+        new("\"", "\""),
+        new("'", "'"),
+    ];
+
+    public static readonly CodeLanguageRules RULES = new()
+    {
+        Keywords = CodeLanguageRules.Words(KEYWORDS),
+        Literals = CodeLanguageRules.Words(LITERALS),
+        FunctionDeclarations = CodeLanguageRules.Words("function"),
+        TypeDeclarations = CodeLanguageRules.Words("class"),
+        LineComments = ["//"],
+        BlockComments = [new("/*", "*/")],
+        Strings = STRINGS,
+        AnnotationPrefix = '@',
+        WordStartCharacters = "$",
+        WordCharacters = "$",
+    };
+}