Add TypeScript language support with patterns and integration into Highlighter

Author: DorZuberi

src/Highlighter.php

@@ -31,6 +31,7 @@
 use Tempest\Highlight\Languages\Terraform\TerraformLanguage;
 use Tempest\Highlight\Languages\Text\TextLanguage;
 use Tempest\Highlight\Languages\Twig\TwigLanguage;
+use Tempest\Highlight\Languages\TypeScript\TypeScriptLanguage;
 use Tempest\Highlight\Languages\Xml\XmlLanguage;
 use Tempest\Highlight\Languages\Yaml\YamlLanguage;
 use Tempest\Highlight\Themes\CssTheme;
@@ -79,6 +80,7 @@ public function __construct(private readonly Theme $theme = new CssTheme())
             ->addLanguage(new SqlLanguage())
             ->addLanguage(new TerminalLanguage())
             ->addLanguage(new TerraformLanguage())
+            ->addLanguage(new TypeScriptLanguage())
             ->addLanguage(new XmlLanguage())
             ->addLanguage(new YamlLanguage())
             ->addLanguage(new DotEnvLanguage())

src/Languages/TypeScript/Patterns/TsBuiltInTypePattern.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tempest\Highlight\Languages\TypeScript\Patterns;
+
+use Tempest\Highlight\IsPattern;
+use Tempest\Highlight\Pattern;
+use Tempest\Highlight\Tokens\TokenTypeEnum;
+
+final class TsBuiltInTypePattern implements Pattern
+{
+    use IsPattern;
+
+    public function getPattern(): string
+    {
+        return '/\b(?<!\.)(?<match>string|number|boolean|any|unknown|never|bigint|symbol|object|undefined)\b/';
+    }
+
+    public function getTokenType(): TokenTypeEnum
+    {
+        return TokenTypeEnum::TYPE;
+    }
+}

src/Languages/TypeScript/Patterns/TsDecoratorPattern.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tempest\Highlight\Languages\TypeScript\Patterns;
+
+use Tempest\Highlight\IsPattern;
+use Tempest\Highlight\Pattern;
+use Tempest\Highlight\Tokens\TokenTypeEnum;
+
+final class TsDecoratorPattern implements Pattern
+{
+    use IsPattern;
+
+    public function getPattern(): string
+    {
+        return '/(?<match>@[A-Za-z_][\w]*)/';
+    }
+
+    public function getTokenType(): TokenTypeEnum
+    {
+        return TokenTypeEnum::ATTRIBUTE;
+    }
+}

src/Languages/TypeScript/Patterns/TsGenericPattern.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tempest\Highlight\Languages\TypeScript\Patterns;
+
+use Tempest\Highlight\IsPattern;
+use Tempest\Highlight\Pattern;
+use Tempest\Highlight\Tokens\TokenTypeEnum;
+
+final class TsGenericPattern implements Pattern
+{
+    use IsPattern;
+
+    public function getPattern(): string
+    {
+        return '/(?<=\w)(?<match><[A-Z][\w\s,\.\[\]]*>)/';
+    }
+
+    public function getTokenType(): TokenTypeEnum
+    {
+        return TokenTypeEnum::GENERIC;
+    }
+}

src/Languages/TypeScript/Patterns/TsTypeAnnotationPattern.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tempest\Highlight\Languages\TypeScript\Patterns;
+
+use Tempest\Highlight\IsPattern;
+use Tempest\Highlight\Pattern;
+use Tempest\Highlight\Tokens\TokenTypeEnum;
+
+final class TsTypeAnnotationPattern implements Pattern
+{
+    use IsPattern;
+
+    public function getPattern(): string
+    {
+        return '/(?<=[\w\)\]])\s*:\s*(?<match>[A-Z][\w]*(?:\.[A-Z][\w]*)*(?:\[\])?)/';
+    }
+
+    public function getTokenType(): TokenTypeEnum
+    {
+        return TokenTypeEnum::TYPE;
+    }
+}

src/Languages/TypeScript/TypeScriptLanguage.php

@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tempest\Highlight\Languages\TypeScript;
+
+use Override;
+use Tempest\Highlight\Languages\JavaScript\JavaScriptLanguage;
+use Tempest\Highlight\Languages\JavaScript\Patterns\CombinedJsKeywordPattern;
+use Tempest\Highlight\Languages\TypeScript\Patterns\TsBuiltInTypePattern;
+use Tempest\Highlight\Languages\TypeScript\Patterns\TsDecoratorPattern;
+use Tempest\Highlight\Languages\TypeScript\Patterns\TsGenericPattern;
+use Tempest\Highlight\Languages\TypeScript\Patterns\TsTypeAnnotationPattern;
+
+class TypeScriptLanguage extends JavaScriptLanguage
+{
+    private const array TS_KEYWORDS = [
+        'type', 'declare', 'readonly', 'namespace', 'keyof', 'infer',
+        'satisfies', 'abstract', 'is', 'module', 'override', 'asserts',
+    ];
+
+    #[Override]
+    public function getName(): string
+    {
+        return 'ts';
+    }
+
+    #[Override]
+    public function getAliases(): array
+    {
+        return ['typescript'];
+    }
+
+    #[Override]
+    public function getPatterns(): array
+    {
+        return [
+            ...parent::getPatterns(),
+            new CombinedJsKeywordPattern(self::TS_KEYWORDS),
+            new TsBuiltInTypePattern(),
+            new TsTypeAnnotationPattern(),
+            new TsDecoratorPattern(),
+            new TsGenericPattern(),
+        ];
+    }
+}