fix(lib): expose conditional

packages/cdktf/lib/terraform-functions.ts

@@ -1,6 +1,6 @@
 // Copyright (c) HashiCorp, Inc
 // SPDX-License-Identifier: MPL-2.0
-import { propertyAccess, rawString, Token } from ".";
+import { conditional, Expression, propertyAccess, rawString, Token } from ".";
 import { asAny } from "./functions/helpers";
 import { FnGenerated } from "./functions/terraform-functions.generated";
 
@@ -18,6 +18,20 @@ export class Fn extends FnGenerated {
     return Fn._bcrypt(str, cost ? [cost] : []);
   }
 
+  /**
+   * {@link https://developer.hashicorp.com/terraform/language/expressions/conditionals} A conditional expression uses the value of a boolean expression to select one of two values.
+   * @param {Expression} condition
+   * @param {Expression} trueValue
+   * @param {Expression} falseValue
+   */
+  static conditional(
+    condition: Expression,
+    trueValue: Expression,
+    falseValue: Expression
+  ): any {
+    return conditional(condition, trueValue, falseValue);
+  }
+
   /**
    * {@link /terraform/docs/language/functions/lookup.html lookup} retrieves the value of a single element from a map, given its key. If the given key does not exist, the given default value is returned instead.
    * @param {any} inputMap

packages/cdktf/test/functions.test.ts

@@ -323,6 +323,25 @@ test("functions with object inputs", () => {
   `);
 });
 
+test("conditional", () => {
+  const app = Testing.app();
+  const stack = new TerraformStack(app, "test");
+
+  new TerraformOutput(stack, "test-output", {
+    value: Fn.conditional(false, 0, 5),
+  });
+
+  expect(Testing.synth(stack)).toMatchInlineSnapshot(`
+    "{
+      "output": {
+        "test-output": {
+          "value": "\${false ? 0 : 5}"
+        }
+      }
+    }"
+  `);
+});
+
 test("quoted primitives in list", () => {
   const app = Testing.app();
   const stack = new TerraformStack(app, "test");