From 755c51fa6107d8ece646f68ac21350906be69df4 Mon Sep 17 00:00:00 2001
From: Kir_Antipov <kp.antipov@gmail.com>
Date: Sat, 4 Feb 2023 12:03:22 +0000
Subject: [PATCH] Implemented class that represents type alias

---
 src/utils/typescript/typescript-type-alias.ts | 104 ++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 src/utils/typescript/typescript-type-alias.ts

diff --git a/src/utils/typescript/typescript-type-alias.ts b/src/utils/typescript/typescript-type-alias.ts
new file mode 100644
index 0000000..d42a1ed
--- /dev/null
+++ b/src/utils/typescript/typescript-type-alias.ts
@@ -0,0 +1,104 @@
+import { AbstractTypeScriptNode } from "./abstract-typescript-node";
+import { getIndentation, TypeScriptFormattingOptions } from "./typescript-formatting-options";
+import { TypeScriptTypeDefinition } from "./typescript-type-definition";
+
+/**
+ * Represents a type alias in a TypeScript module.
+ */
+export class TypeScriptTypeAlias extends AbstractTypeScriptNode implements TypeScriptTypeDefinition {
+    /**
+     * The name of the type alias.
+     */
+    private readonly _name: string;
+
+    /**
+     * The type definition of the type alias.
+     */
+    private readonly _type: TypeScriptTypeDefinition;
+
+    /**
+     * Constructs a new {@link TypeScriptTypeAlias} instance.
+     *
+     * @param name - The name of the type alias.
+     * @param type - The type definition of the type alias.
+     */
+    private constructor(name: string, type: TypeScriptTypeDefinition) {
+        super();
+        this._name = name;
+        this._type = type;
+    }
+
+    /**
+     * Creates a new {@link TypeScriptTypeAlias} instance.
+     *
+     * @param name - The name of the type alias.
+     * @param type - The type definition of the type alias.
+     *
+     * @returns A new {@link TypeScriptTypeAlias} instance.
+     */
+    static create(name: string, type: TypeScriptTypeDefinition): TypeScriptTypeAlias {
+        return new TypeScriptTypeAlias(name, type);
+    }
+
+    /**
+     * Gets the name of the type alias.
+     */
+    get name(): string {
+        return this._name;
+    }
+
+    /**
+     * Gets the type definition of the type alias.
+     */
+    get type(): TypeScriptTypeDefinition {
+        return this._type;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    get isComposite(): true {
+        return true;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    get isUnion(): false {
+        return false;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    get isIntersection(): boolean {
+        return false;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    get isAlias(): true {
+        return true;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    composingTypes(): Iterable<TypeScriptTypeDefinition> {
+        return [this._type];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    formatContent(options?: TypeScriptFormattingOptions): string {
+        const indent = getIndentation(options);
+
+        const formattedName = this._name;
+        const formattedType = this._type.format(options).trimStart();
+        const formattedTypeAlias = `${indent}type ${formattedName} = ${formattedType};`;
+
+        return formattedTypeAlias;
+    }
+}