Added support for variable declarations in syntax types

Author: preeesha

rocket-chatter-ingestion-server/src/process/prepare/processor/syntax/variableDeclarations.ts

@@ -0,0 +1,56 @@
+import { namedTypes } from "ast-types"
+import { TreeNode } from "../core/treeNode"
+import { Classes } from "./classes"
+import { Functions } from "./functions"
+
+export namespace VariableDeclarations {
+	export function Handle(n: namedTypes.VariableDeclaration) {
+		const nodes: TreeNode[] = []
+
+		// For variable declarations
+		for (const d of n.declarations) {
+			if (namedTypes.VariableDeclarator.check(d)) {
+				const node = new TreeNode(
+					(d.id as any).name,
+					"variable",
+					"",
+					n.loc?.start.line ?? 0,
+					n.loc?.start.column ?? 0
+				)
+
+				// For variables declared using other variables
+				if (namedTypes.Identifier.check(d.init)) {
+					if (!d.init.name) continue
+					node.pushUse({
+						name: d.init.name,
+						type: "variable",
+					})
+				}
+				// For variables declared using function calls
+				else if (namedTypes.CallExpression.check(d.init)) {
+					node.pushUse(
+						{
+							name: (d.init.callee as any).name,
+							type: "function",
+						},
+						...Functions.flattenCallExpression(d.init)
+					)
+				}
+				// For variables declared using new expressions
+				else if (namedTypes.NewExpression.check(d.init)) {
+					if (namedTypes.Identifier.check(d.init.callee)) {
+						node.pushUse({
+							name: d.init.callee.name,
+							type: "class",
+						})
+					}
+					node.pushUse(...Classes.flattenNewExpression(d.init))
+				}
+
+				nodes.push(node)
+			}
+		}
+
+		return nodes
+	}
+}