Support Option in typescript-types

148 files changed, 1011 insertions, 0 deletions

diff --git a/examples/12-inductive-data-types/hobgoblin.json5 b/examples/10-option/hobgoblin.json5
index eac8d4a..eac8d4a 100644
--- a/examples/12-inductive-data-types/hobgoblin.json5
+++ b/examples/10-option/hobgoblin.json5
diff --git a/examples/10-shared/output/java/.gitignore b/examples/10-option/output/java/.gitignore
index ff511d4..ff511d4 100644
--- a/examples/10-shared/output/java/.gitignore
+++ b/examples/10-option/output/java/.gitignore
diff --git a/examples/10-shared/output/java/pom.xml b/examples/10-option/output/java/pom.xml
index 445fa65..445fa65 120000
--- a/examples/10-shared/output/java/pom.xml
+++ b/examples/10-option/output/java/pom.xml
diff --git a/examples/10-option/output/java/src/test/java/org/zwobble/example/PointTests.java b/examples/10-option/output/java/src/test/java/org/zwobble/example/PointTests.java
new file mode 100644
index 0000000..b1f0ccb
--- /dev/null
+++ b/examples/10-option/output/java/src/test/java/org/zwobble/example/PointTests.java
@@ -0,0 +1,32 @@
+package org.zwobble.example;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import org.junit.jupiter.api.Test;
+import java.util.List;
+import java.util.Optional;
+import org.zwobble.example.types.point.Line;
+import org.zwobble.example.types.point.Point;
+
+public class PointTests {
+    @Test
+    public void canCreateLineWithConstructor() {
+        var line = new Line(
+            Optional.of(new Point(10, 25)),
+            Optional.of(42)
+        );
+
+        assertEquals(line.start().get().x(), 10);
+        assertEquals(line.length().get(), 42);
+    }
+
+    @Test
+    public void canCreateLineWithBuilder() {
+        var line = Line.arbitrary()
+            .withStart(new Point(10, 25))
+            .withLength(42)
+            .build();
+
+        assertEquals(line.start().get().x(), 10);
+        assertEquals(line.length().get(), 42);
+    }
+}
diff --git a/examples/10-shared/output/rust/.gitignore b/examples/10-option/output/rust/.gitignore
index ea8c4bf..ea8c4bf 100644
--- a/examples/10-shared/output/rust/.gitignore
+++ b/examples/10-option/output/rust/.gitignore
diff --git a/examples/10-shared/output/rust/Cargo.lock b/examples/10-option/output/rust/Cargo.lock
index 9dc6e3e..9dc6e3e 100644
--- a/examples/10-shared/output/rust/Cargo.lock
+++ b/examples/10-option/output/rust/Cargo.lock
diff --git a/examples/10-shared/output/rust/Cargo.toml b/examples/10-option/output/rust/Cargo.toml
index 5d4c622..5d4c622 100644
--- a/examples/10-shared/output/rust/Cargo.toml
+++ b/examples/10-option/output/rust/Cargo.toml
diff --git a/examples/10-shared/output/rust/rust-toolchain.toml b/examples/10-option/output/rust/rust-toolchain.toml
index 4fedb95..4fedb95 100644
--- a/examples/10-shared/output/rust/rust-toolchain.toml
+++ b/examples/10-option/output/rust/rust-toolchain.toml
diff --git a/examples/10-option/output/rust/src/lib.rs b/examples/10-option/output/rust/src/lib.rs
new file mode 100644
index 0000000..7a41573
--- /dev/null
+++ b/examples/10-option/output/rust/src/lib.rs
@@ -0,0 +1,14 @@
+mod point;
+
+#[cfg(test)]
+mod test {
+    use super::point::{Line, Point};
+
+    #[test]
+    fn can_create_line_directly() {
+        let line = Line {
+            start: Some(Point { x: 10, y: 25 }),
+            length: Some(42),
+        };
+    }
+}
diff --git a/examples/10-option/output/rust/src/point.rs b/examples/10-option/output/rust/src/point.rs
new file mode 100644
index 0000000..7f481f8
--- /dev/null
+++ b/examples/10-option/output/rust/src/point.rs
@@ -0,0 +1,13 @@
+// Generated by hobgoblin.
+
+#[derive(Clone, Debug, PartialEq)]
+pub struct Line {
+    pub start: ::std::option::Option::<crate::point::Point>,
+    pub length: ::std::option::Option::<::core::primitive::i32>,
+}
+
+#[derive(Clone, Debug, PartialEq)]
+pub struct Point {
+    pub x: ::core::primitive::i32,
+    pub y: ::core::primitive::i32,
+}
diff --git a/examples/10-shared/output/typescript/.gitignore b/examples/10-option/output/typescript/.gitignore
index 07e6e47..07e6e47 100644
--- a/examples/10-shared/output/typescript/.gitignore
+++ b/examples/10-option/output/typescript/.gitignore
diff --git a/examples/10-shared/output/typescript/package.json b/examples/10-option/output/typescript/package.json
index 0bc7349..0bc7349 120000
--- a/examples/10-shared/output/typescript/package.json
+++ b/examples/10-option/output/typescript/package.json
diff --git a/examples/10-option/output/typescript/pnpm-lock.yaml b/examples/10-option/output/typescript/pnpm-lock.yaml
new file mode 100644
index 0000000..f5404e5
--- /dev/null
+++ b/examples/10-option/output/typescript/pnpm-lock.yaml
@@ -0,0 +1,834 @@
+lockfileVersion: '9.0'
+
+settings:
+  autoInstallPeers: true
+  excludeLinksFromLockfile: false
+
+importers:
+
+  .:
+    devDependencies:
+      '@types/mocha':
+        specifier: ^10.0.10
+        version: 10.0.10
+      '@types/node':
+        specifier: ^26.4.0
+        version: 26.6.2
+      mocha:
+        specifier: ^11.8.0
+        version: 11.8.0
+      typescript:
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+        version: 7.0.2
+
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+      workerpool: 9.3.4
+      yargs: 17.7.3
+      yargs-parser: 21.1.1
+      yargs-unparser: 2.0.0
+
+  ms@2.1.3: {}
+
+  p-limit@3.1.0:
+    dependencies:
+      yocto-queue: 0.1.0
+
+  p-locate@5.0.0:
+    dependencies:
+      p-limit: 3.1.0
+
+  package-json-from-dist@1.0.1: {}
+
+  path-exists@4.0.0: {}
+
+  path-key@3.1.1: {}
+
+  path-scurry@1.11.1:
+    dependencies:
+      lru-cache: 10.4.3
+      minipass: 7.1.3
+
+  picocolors@1.1.1: {}
+
+  randombytes@2.1.0:
+    dependencies:
+      safe-buffer: 5.2.1
+
+  readdirp@4.1.2: {}
+
+  require-directory@2.1.1: {}
+
+  safe-buffer@5.2.1: {}
+
+  serialize-javascript@6.0.2:
+    dependencies:
+      randombytes: 2.1.0
+
+  shebang-command@2.0.0:
+    dependencies:
+      shebang-regex: 3.0.0
+
+  shebang-regex@3.0.0: {}
+
+  signal-exit@4.1.0: {}
+
+  string-width@4.2.3:
+    dependencies:
+      emoji-regex: 8.0.0
+      is-fullwidth-code-point: 3.0.0
+      strip-ansi: 6.0.1
+
+  string-width@5.1.2:
+    dependencies:
+      eastasianwidth: 0.2.0
+      emoji-regex: 9.2.2
+      strip-ansi: 7.2.0
+
+  strip-ansi@6.0.1:
+    dependencies:
+      ansi-regex: 5.0.1
+
+  strip-ansi@7.2.0:
+    dependencies:
+      ansi-regex: 6.3.0
+
+  strip-json-comments@3.1.1: {}
+
+  supports-color@7.2.0:
+    dependencies:
+      has-flag: 4.0.0
+
+  supports-color@8.1.1:
+    dependencies:
+      has-flag: 4.0.0
+
+  typescript@7.0.2:
+    optionalDependencies:
+      '@typescript/typescript-aix-ppc64': 7.0.2
+      '@typescript/typescript-darwin-arm64': 7.0.2
+      '@typescript/typescript-darwin-x64': 7.0.2
+      '@typescript/typescript-freebsd-arm64': 7.0.2
+      '@typescript/typescript-freebsd-x64': 7.0.2
+      '@typescript/typescript-linux-arm': 7.0.2
+      '@typescript/typescript-linux-arm64': 7.0.2
+      '@typescript/typescript-linux-loong64': 7.0.2
+      '@typescript/typescript-linux-mips64el': 7.0.2
+      '@typescript/typescript-linux-ppc64': 7.0.2
+      '@typescript/typescript-linux-riscv64': 7.0.2
+      '@typescript/typescript-linux-s390x': 7.0.2
+      '@typescript/typescript-linux-x64': 7.0.2
+      '@typescript/typescript-netbsd-arm64': 7.0.2
+      '@typescript/typescript-netbsd-x64': 7.0.2
+      '@typescript/typescript-openbsd-arm64': 7.0.2
+      '@typescript/typescript-openbsd-x64': 7.0.2
+      '@typescript/typescript-sunos-x64': 7.0.2
+      '@typescript/typescript-win32-arm64': 7.0.2
+      '@typescript/typescript-win32-x64': 7.0.2
+
+  undici-types@8.9.0: {}
+
+  which@2.0.2:
+    dependencies:
+      isexe: 2.0.0
+
+  workerpool@9.3.4: {}
+
+  wrap-ansi@7.0.0:
+    dependencies:
+      ansi-styles: 4.3.0
+      string-width: 4.2.3
+      strip-ansi: 6.0.1
+
+  wrap-ansi@8.1.0:
+    dependencies:
+      ansi-styles: 6.2.3
+      string-width: 5.1.2
+      strip-ansi: 7.2.0
+
+  y18n@5.0.8: {}
+
+  yargs-parser@21.1.1: {}
+
+  yargs-unparser@2.0.0:
+    dependencies:
+      camelcase: 6.3.0
+      decamelize: 4.0.0
+      flat: 5.0.2
+      is-plain-obj: 2.1.0
+
+  yargs@17.7.3:
+    dependencies:
+      cliui: 8.0.1
+      escalade: 3.2.0
+      get-caller-file: 2.0.5
+      require-directory: 2.1.1
+      string-width: 4.2.3
+      y18n: 5.0.8
+      yargs-parser: 21.1.1
+
+  yocto-queue@0.1.0: {}
diff --git a/examples/10-option/output/typescript/src/point.test.ts b/examples/10-option/output/typescript/src/point.test.ts
new file mode 100644
index 0000000..3a39407
--- /dev/null
+++ b/examples/10-option/output/typescript/src/point.test.ts
@@ -0,0 +1,12 @@
+import * as assert from "node:assert";
+
+import {test} from "mocha";
+
+import {Line, Point} from "./point.ts";
+
+test("can create line with constructor", () => {
+    const line = new Line(new Point(10, 25), 42);
+
+    assert.strictEqual(line.start!.x, 10);
+    assert.strictEqual(line.length, 42);
+});
diff --git a/examples/10-option/output/typescript/src/point.ts b/examples/10-option/output/typescript/src/point.ts
new file mode 100644
index 0000000..a6c6135
--- /dev/null
+++ b/examples/10-option/output/typescript/src/point.ts
@@ -0,0 +1,39 @@
+// Generated by hobgoblin.
+
+// Custom area start: imports
+// Custom area end: imports
+
+class Line {
+    public readonly start: Point | null;
+
+    public readonly length: number | null;
+
+    public constructor(start: Point | null, length: number | null) {
+        this.start = start;
+        this.length = length;
+    }
+
+    // Custom area start: Line, body
+    // Custom area end: Line, body
+}
+
+export {Line};
+
+class Point {
+    public readonly x: number;
+
+    public readonly y: number;
+
+    public constructor(x: number, y: number) {
+        this.x = x;
+        this.y = y;
+    }
+
+    // Custom area start: Point, body
+    // Custom area end: Point, body
+}
+
+export {Point};
+
+// Custom area start: body
+// Custom area end: body
diff --git a/examples/10-shared/output/typescript/tsconfig.json b/examples/10-option/output/typescript/tsconfig.json
index 3c7cb2a..3c7cb2a 120000
--- a/examples/10-shared/output/typescript/tsconfig.json
+++ b/examples/10-option/output/typescript/tsconfig.json
diff --git a/examples/10-option/src/point.hob b/examples/10-option/src/point.hob
new file mode 100644
index 0000000..c144d2e
--- /dev/null
+++ b/examples/10-option/src/point.hob
@@ -0,0 +1,9 @@
+struct Line {
+    field start: Option[Point];
+    field length: Option[Int32];
+}
+
+struct Point {
+    field x: Int32;
+    field y: Int32;
+}
diff --git a/examples/10-shared/hobgoblin.json5 b/examples/11-shared/hobgoblin.json5
index 19e0f93..19e0f93 100644
--- a/examples/10-shared/hobgoblin.json5
+++ b/examples/11-shared/hobgoblin.json5
diff --git a/examples/11-imports/output/java/.gitignore b/examples/11-shared/output/java/.gitignore
index ff511d4..ff511d4 100644
--- a/examples/11-imports/output/java/.gitignore
+++ b/examples/11-shared/output/java/.gitignore
diff --git a/examples/11-imports/output/java/pom.xml b/examples/11-shared/output/java/pom.xml
index 445fa65..445fa65 120000
--- a/examples/11-imports/output/java/pom.xml
+++ b/examples/11-shared/output/java/pom.xml
diff --git a/examples/10-shared/output/java/src/test/java/org/zwobble/example/PointTests.java b/examples/11-shared/output/java/src/test/java/org/zwobble/example/PointTests.java
index b4c140d..b4c140d 100644
--- a/examples/10-shared/output/java/src/test/java/org/zwobble/example/PointTests.java
+++ b/examples/11-shared/output/java/src/test/java/org/zwobble/example/PointTests.java
diff --git a/examples/11-imports/output/rust/.gitignore b/examples/11-shared/output/rust/.gitignore
index ea8c4bf..ea8c4bf 100644
--- a/examples/11-imports/output/rust/.gitignore
+++ b/examples/11-shared/output/rust/.gitignore
diff --git a/examples/11-imports/output/rust/Cargo.lock b/examples/11-shared/output/rust/Cargo.lock
index 9dc6e3e..9dc6e3e 100644
--- a/examples/11-imports/output/rust/Cargo.lock
+++ b/examples/11-shared/output/rust/Cargo.lock
diff --git a/examples/11-imports/output/rust/Cargo.toml b/examples/11-shared/output/rust/Cargo.toml
index 5d4c622..5d4c622 100644
--- a/examples/11-imports/output/rust/Cargo.toml
+++ b/examples/11-shared/output/rust/Cargo.toml
diff --git a/examples/11-imports/output/rust/rust-toolchain.toml b/examples/11-shared/output/rust/rust-toolchain.toml
index 4fedb95..4fedb95 100644
--- a/examples/11-imports/output/rust/rust-toolchain.toml
+++ b/examples/11-shared/output/rust/rust-toolchain.toml
diff --git a/examples/10-shared/output/rust/src/lib.rs b/examples/11-shared/output/rust/src/lib.rs
index af2c87f..af2c87f 100644
--- a/examples/10-shared/output/rust/src/lib.rs
+++ b/examples/11-shared/output/rust/src/lib.rs
diff --git a/examples/10-shared/output/rust/src/point.rs b/examples/11-shared/output/rust/src/point.rs
index 82df631..82df631 100644
--- a/examples/10-shared/output/rust/src/point.rs
+++ b/examples/11-shared/output/rust/src/point.rs
diff --git a/examples/11-imports/output/typescript/.gitignore b/examples/11-shared/output/typescript/.gitignore
index 07e6e47..07e6e47 100644
--- a/examples/11-imports/output/typescript/.gitignore
+++ b/examples/11-shared/output/typescript/.gitignore
diff --git a/examples/11-imports/output/typescript/package.json b/examples/11-shared/output/typescript/package.json
index 0bc7349..0bc7349 120000
--- a/examples/11-imports/output/typescript/package.json
+++ b/examples/11-shared/output/typescript/package.json
diff --git a/examples/10-shared/output/typescript/pnpm-lock.yaml b/examples/11-shared/output/typescript/pnpm-lock.yaml
index 016d629..016d629 100644
--- a/examples/10-shared/output/typescript/pnpm-lock.yaml
+++ b/examples/11-shared/output/typescript/pnpm-lock.yaml
diff --git a/examples/10-shared/output/typescript/src/point.test.ts b/examples/11-shared/output/typescript/src/point.test.ts
index 46fc446..46fc446 100644
--- a/examples/10-shared/output/typescript/src/point.test.ts
+++ b/examples/11-shared/output/typescript/src/point.test.ts
diff --git a/examples/10-shared/output/typescript/src/point.ts b/examples/11-shared/output/typescript/src/point.ts
index fccae01..fccae01 100644
--- a/examples/10-shared/output/typescript/src/point.ts
+++ b/examples/11-shared/output/typescript/src/point.ts
diff --git a/examples/11-imports/output/typescript/tsconfig.json b/examples/11-shared/output/typescript/tsconfig.json
index 3c7cb2a..3c7cb2a 120000
--- a/examples/11-imports/output/typescript/tsconfig.json
+++ b/examples/11-shared/output/typescript/tsconfig.json
diff --git a/examples/10-shared/src/point.hob b/examples/11-shared/src/point.hob
index 7b9a8e6..7b9a8e6 100644
--- a/examples/10-shared/src/point.hob
+++ b/examples/11-shared/src/point.hob
diff --git a/examples/11-imports/hobgoblin.json5 b/examples/12-imports/hobgoblin.json5
index d3f8c79..d3f8c79 100644
--- a/examples/11-imports/hobgoblin.json5
+++ b/examples/12-imports/hobgoblin.json5
diff --git a/examples/12-inductive-data-types/output/java/.gitignore b/examples/12-imports/output/java/.gitignore
index ff511d4..ff511d4 100644
--- a/examples/12-inductive-data-types/output/java/.gitignore
+++ b/examples/12-imports/output/java/.gitignore
diff --git a/examples/12-inductive-data-types/output/java/pom.xml b/examples/12-imports/output/java/pom.xml
index 445fa65..445fa65 120000
--- a/examples/12-inductive-data-types/output/java/pom.xml
+++ b/examples/12-imports/output/java/pom.xml
diff --git a/examples/11-imports/output/java/src/test/java/org/zwobble/example/LineTests.java b/examples/12-imports/output/java/src/test/java/org/zwobble/example/LineTests.java
index c376b19..c376b19 100644
--- a/examples/11-imports/output/java/src/test/java/org/zwobble/example/LineTests.java
+++ b/examples/12-imports/output/java/src/test/java/org/zwobble/example/LineTests.java
diff --git a/examples/12-inductive-data-types/output/rust/.gitignore b/examples/12-imports/output/rust/.gitignore
index ea8c4bf..ea8c4bf 100644
--- a/examples/12-inductive-data-types/output/rust/.gitignore
+++ b/examples/12-imports/output/rust/.gitignore
diff --git a/examples/12-inductive-data-types/output/rust/Cargo.lock b/examples/12-imports/output/rust/Cargo.lock
index 9dc6e3e..9dc6e3e 100644
--- a/examples/12-inductive-data-types/output/rust/Cargo.lock
+++ b/examples/12-imports/output/rust/Cargo.lock
diff --git a/examples/12-inductive-data-types/output/rust/Cargo.toml b/examples/12-imports/output/rust/Cargo.toml
index 5d4c622..5d4c622 100644
--- a/examples/12-inductive-data-types/output/rust/Cargo.toml
+++ b/examples/12-imports/output/rust/Cargo.toml
diff --git a/examples/12-inductive-data-types/output/rust/rust-toolchain.toml b/examples/12-imports/output/rust/rust-toolchain.toml
index 4fedb95..4fedb95 100644
--- a/examples/12-inductive-data-types/output/rust/rust-toolchain.toml
+++ b/examples/12-imports/output/rust/rust-toolchain.toml
diff --git a/examples/11-imports/output/rust/src/lib.rs b/examples/12-imports/output/rust/src/lib.rs
index ffbcbf4..ffbcbf4 100644
--- a/examples/11-imports/output/rust/src/lib.rs
+++ b/examples/12-imports/output/rust/src/lib.rs
diff --git a/examples/11-imports/output/rust/src/line.rs b/examples/12-imports/output/rust/src/line.rs
index ec51f56..ec51f56 100644
--- a/examples/11-imports/output/rust/src/line.rs
+++ b/examples/12-imports/output/rust/src/line.rs
diff --git a/examples/11-imports/output/rust/src/point.rs b/examples/12-imports/output/rust/src/point.rs
index 22f5389..22f5389 100644
--- a/examples/11-imports/output/rust/src/point.rs
+++ b/examples/12-imports/output/rust/src/point.rs
diff --git a/examples/12-inductive-data-types/output/typescript/.gitignore b/examples/12-imports/output/typescript/.gitignore
index 07e6e47..07e6e47 100644
--- a/examples/12-inductive-data-types/output/typescript/.gitignore
+++ b/examples/12-imports/output/typescript/.gitignore
diff --git a/examples/12-inductive-data-types/output/typescript/package.json b/examples/12-imports/output/typescript/package.json
index 0bc7349..0bc7349 120000
--- a/examples/12-inductive-data-types/output/typescript/package.json
+++ b/examples/12-imports/output/typescript/package.json
diff --git a/examples/11-imports/output/typescript/pnpm-lock.yaml b/examples/12-imports/output/typescript/pnpm-lock.yaml
index b29cfae..b29cfae 100644
--- a/examples/11-imports/output/typescript/pnpm-lock.yaml
+++ b/examples/12-imports/output/typescript/pnpm-lock.yaml
diff --git a/examples/11-imports/output/typescript/src/line.test.ts b/examples/12-imports/output/typescript/src/line.test.ts
index 9c2fbe6..9c2fbe6 100644
--- a/examples/11-imports/output/typescript/src/line.test.ts
+++ b/examples/12-imports/output/typescript/src/line.test.ts
diff --git a/examples/11-imports/output/typescript/src/line.ts b/examples/12-imports/output/typescript/src/line.ts
index 178e01a..178e01a 100644
--- a/examples/11-imports/output/typescript/src/line.ts
+++ b/examples/12-imports/output/typescript/src/line.ts
diff --git a/examples/11-imports/output/typescript/src/point.ts b/examples/12-imports/output/typescript/src/point.ts
index b051211..b051211 100644
--- a/examples/11-imports/output/typescript/src/point.ts
+++ b/examples/12-imports/output/typescript/src/point.ts
diff --git a/examples/12-inductive-data-types/output/typescript/tsconfig.json b/examples/12-imports/output/typescript/tsconfig.json
index 3c7cb2a..3c7cb2a 120000
--- a/examples/12-inductive-data-types/output/typescript/tsconfig.json
+++ b/examples/12-imports/output/typescript/tsconfig.json
diff --git a/examples/11-imports/src/line.hob b/examples/12-imports/src/line.hob
index 562d77f..562d77f 100644
--- a/examples/11-imports/src/line.hob
+++ b/examples/12-imports/src/line.hob
diff --git a/examples/11-imports/src/point.hob b/examples/12-imports/src/point.hob
index 87f9953..87f9953 100644
--- a/examples/11-imports/src/point.hob
+++ b/examples/12-imports/src/point.hob
diff --git a/examples/13-inductive-data-types/hobgoblin.json5 b/examples/13-inductive-data-types/hobgoblin.json5
new file mode 100644
index 0000000..eac8d4a
--- /dev/null
+++ b/examples/13-inductive-data-types/hobgoblin.json5
@@ -0,0 +1,23 @@
+{
+  outputs: {
+    langs: {
+      java: {
+        packageName: "org.zwobble.example.types",
+      },
+    },
+    generators: [
+      {
+        generator: "java-types",
+        path: "output/java/src/gen/java",
+      },
+      {
+        generator: "rust-types",
+        path: "output/rust/src",
+      },
+      {
+        generator: "typescript-types",
+        path: "output/typescript/src",
+      },
+    ],
+  },
+}
diff --git a/examples/13-inductive-data-types-separate-namespaces/output/java/.gitignore b/examples/13-inductive-data-types/output/java/.gitignore
index ff511d4..ff511d4 100644
--- a/examples/13-inductive-data-types-separate-namespaces/output/java/.gitignore
+++ b/examples/13-inductive-data-types/output/java/.gitignore
diff --git a/examples/13-inductive-data-types-separate-namespaces/output/java/pom.xml b/examples/13-inductive-data-types/output/java/pom.xml
index 445fa65..445fa65 120000
--- a/examples/13-inductive-data-types-separate-namespaces/output/java/pom.xml
+++ b/examples/13-inductive-data-types/output/java/pom.xml
diff --git a/examples/12-inductive-data-types/output/java/src/main/java/org/zwobble/example/Arithmetic.java b/examples/13-inductive-data-types/output/java/src/main/java/org/zwobble/example/Arithmetic.java
index 08cb75c..08cb75c 100644
--- a/examples/12-inductive-data-types/output/java/src/main/java/org/zwobble/example/Arithmetic.java
+++ b/examples/13-inductive-data-types/output/java/src/main/java/org/zwobble/example/Arithmetic.java
diff --git a/examples/12-inductive-data-types/output/java/src/test/java/org/zwobble/example/ArithmeticTests.java b/examples/13-inductive-data-types/output/java/src/test/java/org/zwobble/example/ArithmeticTests.java
index cd4fdd0..cd4fdd0 100644
--- a/examples/12-inductive-data-types/output/java/src/test/java/org/zwobble/example/ArithmeticTests.java
+++ b/examples/13-inductive-data-types/output/java/src/test/java/org/zwobble/example/ArithmeticTests.java
diff --git a/examples/13-inductive-data-types-separate-namespaces/output/rust/.gitignore b/examples/13-inductive-data-types/output/rust/.gitignore
index ea8c4bf..ea8c4bf 100644
--- a/examples/13-inductive-data-types-separate-namespaces/output/rust/.gitignore
+++ b/examples/13-inductive-data-types/output/rust/.gitignore
diff --git a/examples/13-inductive-data-types-separate-namespaces/output/rust/Cargo.lock b/examples/13-inductive-data-types/output/rust/Cargo.lock
index 9dc6e3e..9dc6e3e 100644
--- a/examples/13-inductive-data-types-separate-namespaces/output/rust/Cargo.lock
+++ b/examples/13-inductive-data-types/output/rust/Cargo.lock
diff --git a/examples/13-inductive-data-types-separate-namespaces/output/rust/Cargo.toml b/examples/13-inductive-data-types/output/rust/Cargo.toml
index 5d4c622..5d4c622 100644
--- a/examples/13-inductive-data-types-separate-namespaces/output/rust/Cargo.toml
+++ b/examples/13-inductive-data-types/output/rust/Cargo.toml
diff --git a/examples/13-inductive-data-types-separate-namespaces/output/rust/rust-toolchain.toml b/examples/13-inductive-data-types/output/rust/rust-toolchain.toml
index 4fedb95..4fedb95 100644
--- a/examples/13-inductive-data-types-separate-namespaces/output/rust/rust-toolchain.toml
+++ b/examples/13-inductive-data-types/output/rust/rust-toolchain.toml
diff --git a/examples/12-inductive-data-types/output/rust/src/arithmetic.rs b/examples/13-inductive-data-types/output/rust/src/arithmetic.rs
index e73fb87..e73fb87 100644
--- a/examples/12-inductive-data-types/output/rust/src/arithmetic.rs
+++ b/examples/13-inductive-data-types/output/rust/src/arithmetic.rs
diff --git a/examples/12-inductive-data-types/output/rust/src/lib.rs b/examples/13-inductive-data-types/output/rust/src/lib.rs
index 3265e69..3265e69 100644
--- a/examples/12-inductive-data-types/output/rust/src/lib.rs
+++ b/examples/13-inductive-data-types/output/rust/src/lib.rs
diff --git a/examples/14-struct-generic/output/typescript/.gitignore b/examples/13-inductive-data-types/output/typescript/.gitignore
index 07e6e47..07e6e47 100644
--- a/examples/14-struct-generic/output/typescript/.gitignore
+++ b/examples/13-inductive-data-types/output/typescript/.gitignore
diff --git a/examples/14-struct-generic/output/typescript/package.json b/examples/13-inductive-data-types/output/typescript/package.json
index 0bc7349..0bc7349 120000
--- a/examples/14-struct-generic/output/typescript/package.json
+++ b/examples/13-inductive-data-types/output/typescript/package.json
diff --git a/examples/12-inductive-data-types/output/typescript/pnpm-lock.yaml b/examples/13-inductive-data-types/output/typescript/pnpm-lock.yaml
index 016d629..016d629 100644
--- a/examples/12-inductive-data-types/output/typescript/pnpm-lock.yaml
+++ b/examples/13-inductive-data-types/output/typescript/pnpm-lock.yaml
diff --git a/examples/12-inductive-data-types/output/typescript/src/arithmetic.test.ts b/examples/13-inductive-data-types/output/typescript/src/arithmetic.test.ts
index 7d25224..7d25224 100644
--- a/examples/12-inductive-data-types/output/typescript/src/arithmetic.test.ts
+++ b/examples/13-inductive-data-types/output/typescript/src/arithmetic.test.ts
diff --git a/examples/12-inductive-data-types/output/typescript/src/arithmetic.ts b/examples/13-inductive-data-types/output/typescript/src/arithmetic.ts
index 486ac66..486ac66 100644
--- a/examples/12-inductive-data-types/output/typescript/src/arithmetic.ts
+++ b/examples/13-inductive-data-types/output/typescript/src/arithmetic.ts
diff --git a/examples/12-inductive-data-types/output/typescript/src/index.ts b/examples/13-inductive-data-types/output/typescript/src/index.ts
index 8395fea..8395fea 100644
--- a/examples/12-inductive-data-types/output/typescript/src/index.ts
+++ b/examples/13-inductive-data-types/output/typescript/src/index.ts
diff --git a/examples/14-struct-generic/output/typescript/tsconfig.json b/examples/13-inductive-data-types/output/typescript/tsconfig.json
index 3c7cb2a..3c7cb2a 120000
--- a/examples/14-struct-generic/output/typescript/tsconfig.json
+++ b/examples/13-inductive-data-types/output/typescript/tsconfig.json
diff --git a/examples/12-inductive-data-types/src/arithmetic.hob b/examples/13-inductive-data-types/src/arithmetic.hob
index d3b2051..d3b2051 100644
--- a/examples/12-inductive-data-types/src/arithmetic.hob
+++ b/examples/13-inductive-data-types/src/arithmetic.hob
diff --git a/examples/13-inductive-data-types-separate-namespaces/hobgoblin.json5 b/examples/14-inductive-data-types-separate-namespaces/hobgoblin.json5
index 12713d4..12713d4 100644
--- a/examples/13-inductive-data-types-separate-namespaces/hobgoblin.json5
+++ b/examples/14-inductive-data-types-separate-namespaces/hobgoblin.json5
diff --git a/examples/14-struct-generic/output/java/.gitignore b/examples/14-inductive-data-types-separate-namespaces/output/java/.gitignore
index ff511d4..ff511d4 100644
--- a/examples/14-struct-generic/output/java/.gitignore
+++ b/examples/14-inductive-data-types-separate-namespaces/output/java/.gitignore
diff --git a/examples/14-struct-generic/output/java/pom.xml b/examples/14-inductive-data-types-separate-namespaces/output/java/pom.xml
index 445fa65..445fa65 120000
--- a/examples/14-struct-generic/output/java/pom.xml
+++ b/examples/14-inductive-data-types-separate-namespaces/output/java/pom.xml
diff --git a/examples/13-inductive-data-types-separate-namespaces/output/java/src/test/java/org/zwobble/example/DataTests.java b/examples/14-inductive-data-types-separate-namespaces/output/java/src/test/java/org/zwobble/example/DataTests.java
index f01bf0a..f01bf0a 100644
--- a/examples/13-inductive-data-types-separate-namespaces/output/java/src/test/java/org/zwobble/example/DataTests.java
+++ b/examples/14-inductive-data-types-separate-namespaces/output/java/src/test/java/org/zwobble/example/DataTests.java
diff --git a/examples/14-struct-generic/output/rust/.gitignore b/examples/14-inductive-data-types-separate-namespaces/output/rust/.gitignore
index ea8c4bf..ea8c4bf 100644
--- a/examples/14-struct-generic/output/rust/.gitignore
+++ b/examples/14-inductive-data-types-separate-namespaces/output/rust/.gitignore
diff --git a/examples/14-struct-generic/output/rust/Cargo.lock b/examples/14-inductive-data-types-separate-namespaces/output/rust/Cargo.lock
index 9dc6e3e..9dc6e3e 100644
--- a/examples/14-struct-generic/output/rust/Cargo.lock
+++ b/examples/14-inductive-data-types-separate-namespaces/output/rust/Cargo.lock
diff --git a/examples/14-struct-generic/output/rust/Cargo.toml b/examples/14-inductive-data-types-separate-namespaces/output/rust/Cargo.toml
index 5d4c622..5d4c622 100644
--- a/examples/14-struct-generic/output/rust/Cargo.toml
+++ b/examples/14-inductive-data-types-separate-namespaces/output/rust/Cargo.toml
diff --git a/examples/14-struct-generic/output/rust/rust-toolchain.toml b/examples/14-inductive-data-types-separate-namespaces/output/rust/rust-toolchain.toml
index 4fedb95..4fedb95 100644
--- a/examples/14-struct-generic/output/rust/rust-toolchain.toml
+++ b/examples/14-inductive-data-types-separate-namespaces/output/rust/rust-toolchain.toml
diff --git a/examples/13-inductive-data-types-separate-namespaces/output/rust/src/data/a.rs b/examples/14-inductive-data-types-separate-namespaces/output/rust/src/data/a.rs
index 3796251..3796251 100644
--- a/examples/13-inductive-data-types-separate-namespaces/output/rust/src/data/a.rs
+++ b/examples/14-inductive-data-types-separate-namespaces/output/rust/src/data/a.rs
diff --git a/examples/13-inductive-data-types-separate-namespaces/output/rust/src/data/b.rs b/examples/14-inductive-data-types-separate-namespaces/output/rust/src/data/b.rs
index 1968eb3..1968eb3 100644
--- a/examples/13-inductive-data-types-separate-namespaces/output/rust/src/data/b.rs
+++ b/examples/14-inductive-data-types-separate-namespaces/output/rust/src/data/b.rs
diff --git a/examples/13-inductive-data-types-separate-namespaces/output/rust/src/data/mod.rs b/examples/14-inductive-data-types-separate-namespaces/output/rust/src/data/mod.rs
index 677af14..677af14 100644
--- a/examples/13-inductive-data-types-separate-namespaces/output/rust/src/data/mod.rs
+++ b/examples/14-inductive-data-types-separate-namespaces/output/rust/src/data/mod.rs
diff --git a/examples/13-inductive-data-types-separate-namespaces/output/rust/src/lib.rs b/examples/14-inductive-data-types-separate-namespaces/output/rust/src/lib.rs
index 01aaddf..01aaddf 100644
--- a/examples/13-inductive-data-types-separate-namespaces/output/rust/src/lib.rs
+++ b/examples/14-inductive-data-types-separate-namespaces/output/rust/src/lib.rs
diff --git a/examples/13-inductive-data-types-separate-namespaces/src/data/a.hob b/examples/14-inductive-data-types-separate-namespaces/src/data/a.hob
index e8c02ea..e8c02ea 100644
--- a/examples/13-inductive-data-types-separate-namespaces/src/data/a.hob
+++ b/examples/14-inductive-data-types-separate-namespaces/src/data/a.hob
diff --git a/examples/13-inductive-data-types-separate-namespaces/src/data/b.hob b/examples/14-inductive-data-types-separate-namespaces/src/data/b.hob
index 4d538fc..4d538fc 100644
--- a/examples/13-inductive-data-types-separate-namespaces/src/data/b.hob
+++ b/examples/14-inductive-data-types-separate-namespaces/src/data/b.hob
diff --git a/examples/14-struct-generic/hobgoblin.json5 b/examples/15-struct-generic/hobgoblin.json5
index c7dc903..c7dc903 100644
--- a/examples/14-struct-generic/hobgoblin.json5
+++ b/examples/15-struct-generic/hobgoblin.json5
diff --git a/examples/15-native-type-generic/output/java/.gitignore b/examples/15-struct-generic/output/java/.gitignore
index ff511d4..ff511d4 100644
--- a/examples/15-native-type-generic/output/java/.gitignore
+++ b/examples/15-struct-generic/output/java/.gitignore
diff --git a/examples/15-native-type-generic/output/java/pom.xml b/examples/15-struct-generic/output/java/pom.xml
index 445fa65..445fa65 120000
--- a/examples/15-native-type-generic/output/java/pom.xml
+++ b/examples/15-struct-generic/output/java/pom.xml
diff --git a/examples/14-struct-generic/output/java/src/test/java/org/zwobble/example/PointTests.java b/examples/15-struct-generic/output/java/src/test/java/org/zwobble/example/PointTests.java
index fba31c7..fba31c7 100644
--- a/examples/14-struct-generic/output/java/src/test/java/org/zwobble/example/PointTests.java
+++ b/examples/15-struct-generic/output/java/src/test/java/org/zwobble/example/PointTests.java
diff --git a/examples/15-native-type-generic/output/rust/.gitignore b/examples/15-struct-generic/output/rust/.gitignore
index ea8c4bf..ea8c4bf 100644
--- a/examples/15-native-type-generic/output/rust/.gitignore
+++ b/examples/15-struct-generic/output/rust/.gitignore
diff --git a/examples/15-native-type-generic/output/rust/Cargo.lock b/examples/15-struct-generic/output/rust/Cargo.lock
index 9dc6e3e..9dc6e3e 100644
--- a/examples/15-native-type-generic/output/rust/Cargo.lock
+++ b/examples/15-struct-generic/output/rust/Cargo.lock
diff --git a/examples/15-native-type-generic/output/rust/Cargo.toml b/examples/15-struct-generic/output/rust/Cargo.toml
index 5d4c622..5d4c622 100644
--- a/examples/15-native-type-generic/output/rust/Cargo.toml
+++ b/examples/15-struct-generic/output/rust/Cargo.toml
diff --git a/examples/15-native-type-generic/output/rust/rust-toolchain.toml b/examples/15-struct-generic/output/rust/rust-toolchain.toml
index 4fedb95..4fedb95 100644
--- a/examples/15-native-type-generic/output/rust/rust-toolchain.toml
+++ b/examples/15-struct-generic/output/rust/rust-toolchain.toml
diff --git a/examples/14-struct-generic/output/rust/src/lib.rs b/examples/15-struct-generic/output/rust/src/lib.rs
index 75ae1f1..75ae1f1 100644
--- a/examples/14-struct-generic/output/rust/src/lib.rs
+++ b/examples/15-struct-generic/output/rust/src/lib.rs
diff --git a/examples/14-struct-generic/output/rust/src/point.rs b/examples/15-struct-generic/output/rust/src/point.rs
index a6c6615..a6c6615 100644
--- a/examples/14-struct-generic/output/rust/src/point.rs
+++ b/examples/15-struct-generic/output/rust/src/point.rs
diff --git a/examples/15-native-type-generic/output/typescript/.gitignore b/examples/15-struct-generic/output/typescript/.gitignore
index 07e6e47..07e6e47 100644
--- a/examples/15-native-type-generic/output/typescript/.gitignore
+++ b/examples/15-struct-generic/output/typescript/.gitignore
diff --git a/examples/15-native-type-generic/output/typescript/package.json b/examples/15-struct-generic/output/typescript/package.json
index 0bc7349..0bc7349 120000
--- a/examples/15-native-type-generic/output/typescript/package.json
+++ b/examples/15-struct-generic/output/typescript/package.json
diff --git a/examples/14-struct-generic/output/typescript/pnpm-lock.yaml b/examples/15-struct-generic/output/typescript/pnpm-lock.yaml
index 016d629..016d629 100644
--- a/examples/14-struct-generic/output/typescript/pnpm-lock.yaml
+++ b/examples/15-struct-generic/output/typescript/pnpm-lock.yaml
diff --git a/examples/14-struct-generic/output/typescript/src/point.test.ts b/examples/15-struct-generic/output/typescript/src/point.test.ts
index 0d59417..0d59417 100644
--- a/examples/14-struct-generic/output/typescript/src/point.test.ts
+++ b/examples/15-struct-generic/output/typescript/src/point.test.ts
diff --git a/examples/14-struct-generic/output/typescript/src/point.ts b/examples/15-struct-generic/output/typescript/src/point.ts
index f3ecdec..f3ecdec 100644
--- a/examples/14-struct-generic/output/typescript/src/point.ts
+++ b/examples/15-struct-generic/output/typescript/src/point.ts
diff --git a/examples/15-native-type-generic/output/typescript/tsconfig.json b/examples/15-struct-generic/output/typescript/tsconfig.json
index 3c7cb2a..3c7cb2a 120000
--- a/examples/15-native-type-generic/output/typescript/tsconfig.json
+++ b/examples/15-struct-generic/output/typescript/tsconfig.json
diff --git a/examples/14-struct-generic/src/point.hob b/examples/15-struct-generic/src/point.hob
index 5beed86..5beed86 100644
--- a/examples/14-struct-generic/src/point.hob
+++ b/examples/15-struct-generic/src/point.hob
diff --git a/examples/15-native-type-generic/hobgoblin.json5 b/examples/16-native-type-generic/hobgoblin.json5
index 20c767f..20c767f 100644
--- a/examples/15-native-type-generic/hobgoblin.json5
+++ b/examples/16-native-type-generic/hobgoblin.json5
diff --git a/examples/16-native-type-generic/output/java/.gitignore b/examples/16-native-type-generic/output/java/.gitignore
new file mode 100644
index 0000000..ff511d4
--- /dev/null
+++ b/examples/16-native-type-generic/output/java/.gitignore
@@ -0,0 +1,2 @@
+/src/gen/
+/target/
diff --git a/examples/16-transient-0/output/java/pom.xml b/examples/16-native-type-generic/output/java/pom.xml
index 445fa65..445fa65 120000
--- a/examples/16-transient-0/output/java/pom.xml
+++ b/examples/16-native-type-generic/output/java/pom.xml
diff --git a/examples/15-native-type-generic/output/java/src/main/java/org/zwobble/example/types/map/HobgoblinNativeMap.java b/examples/16-native-type-generic/output/java/src/main/java/org/zwobble/example/types/map/HobgoblinNativeMap.java
index 39fd627..39fd627 100644
--- a/examples/15-native-type-generic/output/java/src/main/java/org/zwobble/example/types/map/HobgoblinNativeMap.java
+++ b/examples/16-native-type-generic/output/java/src/main/java/org/zwobble/example/types/map/HobgoblinNativeMap.java
diff --git a/examples/15-native-type-generic/output/java/src/test/java/org/zwobble/example/MapTests.java b/examples/16-native-type-generic/output/java/src/test/java/org/zwobble/example/MapTests.java
index 5b6a764..5b6a764 100644
--- a/examples/15-native-type-generic/output/java/src/test/java/org/zwobble/example/MapTests.java
+++ b/examples/16-native-type-generic/output/java/src/test/java/org/zwobble/example/MapTests.java
diff --git a/examples/16-native-type-generic/output/rust/.gitignore b/examples/16-native-type-generic/output/rust/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/examples/16-native-type-generic/output/rust/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/examples/16-transient-0/output/rust/Cargo.lock b/examples/16-native-type-generic/output/rust/Cargo.lock
index 9dc6e3e..9dc6e3e 100644
--- a/examples/16-transient-0/output/rust/Cargo.lock
+++ b/examples/16-native-type-generic/output/rust/Cargo.lock
diff --git a/examples/16-transient-0/output/rust/Cargo.toml b/examples/16-native-type-generic/output/rust/Cargo.toml
index 5d4c622..5d4c622 100644
--- a/examples/16-transient-0/output/rust/Cargo.toml
+++ b/examples/16-native-type-generic/output/rust/Cargo.toml
diff --git a/examples/16-transient-0/output/rust/rust-toolchain.toml b/examples/16-native-type-generic/output/rust/rust-toolchain.toml
index 4fedb95..4fedb95 100644
--- a/examples/16-transient-0/output/rust/rust-toolchain.toml
+++ b/examples/16-native-type-generic/output/rust/rust-toolchain.toml
diff --git a/examples/15-native-type-generic/output/rust/src/gen/map.rs b/examples/16-native-type-generic/output/rust/src/gen/map.rs
index 59fb30f..59fb30f 100644
--- a/examples/15-native-type-generic/output/rust/src/gen/map.rs
+++ b/examples/16-native-type-generic/output/rust/src/gen/map.rs
diff --git a/examples/15-native-type-generic/output/rust/src/lib.rs b/examples/16-native-type-generic/output/rust/src/lib.rs
index b0adf47..b0adf47 100644
--- a/examples/15-native-type-generic/output/rust/src/lib.rs
+++ b/examples/16-native-type-generic/output/rust/src/lib.rs
diff --git a/examples/15-native-type-generic/output/rust/src/map.rs b/examples/16-native-type-generic/output/rust/src/map.rs
index 3dd0a72..3dd0a72 100644
--- a/examples/15-native-type-generic/output/rust/src/map.rs
+++ b/examples/16-native-type-generic/output/rust/src/map.rs
diff --git a/examples/16-native-type-generic/output/typescript/.gitignore b/examples/16-native-type-generic/output/typescript/.gitignore
new file mode 100644
index 0000000..07e6e47
--- /dev/null
+++ b/examples/16-native-type-generic/output/typescript/.gitignore
@@ -0,0 +1 @@
+/node_modules
diff --git a/examples/16-native-type-generic/output/typescript/package.json b/examples/16-native-type-generic/output/typescript/package.json
new file mode 120000
index 0000000..0bc7349
--- /dev/null
+++ b/examples/16-native-type-generic/output/typescript/package.json
@@ -0,0 +1 @@
+../../../templates/typescript/package.json
\ No newline at end of file
diff --git a/examples/15-native-type-generic/output/typescript/pnpm-lock.yaml b/examples/16-native-type-generic/output/typescript/pnpm-lock.yaml
index 016d629..016d629 100644
--- a/examples/15-native-type-generic/output/typescript/pnpm-lock.yaml
+++ b/examples/16-native-type-generic/output/typescript/pnpm-lock.yaml
diff --git a/examples/15-native-type-generic/output/typescript/src/map.test.ts b/examples/16-native-type-generic/output/typescript/src/map.test.ts
index a442c2c..a442c2c 100644
--- a/examples/15-native-type-generic/output/typescript/src/map.test.ts
+++ b/examples/16-native-type-generic/output/typescript/src/map.test.ts
diff --git a/examples/15-native-type-generic/output/typescript/src/map.ts b/examples/16-native-type-generic/output/typescript/src/map.ts
index 394ad92..394ad92 100644
--- a/examples/15-native-type-generic/output/typescript/src/map.ts
+++ b/examples/16-native-type-generic/output/typescript/src/map.ts
diff --git a/examples/16-native-type-generic/output/typescript/tsconfig.json b/examples/16-native-type-generic/output/typescript/tsconfig.json
new file mode 120000
index 0000000..3c7cb2a
--- /dev/null
+++ b/examples/16-native-type-generic/output/typescript/tsconfig.json
@@ -0,0 +1 @@
+../../../templates/typescript/tsconfig.json
\ No newline at end of file
diff --git a/examples/15-native-type-generic/src/map.hob b/examples/16-native-type-generic/src/map.hob
index 0118889..0118889 100644
--- a/examples/15-native-type-generic/src/map.hob
+++ b/examples/16-native-type-generic/src/map.hob
diff --git a/examples/16-transient-0/hobgoblin.json5 b/examples/17-transient-0/hobgoblin.json5
index e632b0a..e632b0a 100644
--- a/examples/16-transient-0/hobgoblin.json5
+++ b/examples/17-transient-0/hobgoblin.json5
diff --git a/examples/16-transient-0/output/java/.gitignore b/examples/17-transient-0/output/java/.gitignore
index 2fcf0b8..2fcf0b8 100644
--- a/examples/16-transient-0/output/java/.gitignore
+++ b/examples/17-transient-0/output/java/.gitignore
diff --git a/examples/17-transient-0/output/java/pom.xml b/examples/17-transient-0/output/java/pom.xml
new file mode 120000
index 0000000..445fa65
--- /dev/null
+++ b/examples/17-transient-0/output/java/pom.xml
@@ -0,0 +1 @@
+../../../templates/java-junit/pom.xml
\ No newline at end of file
diff --git a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/GenericNative.java b/examples/17-transient-0/output/java/src/main/java/org/zwobble/example/types/data/GenericNative.java
index cfd16d5..cfd16d5 100644
--- a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/GenericNative.java
+++ b/examples/17-transient-0/output/java/src/main/java/org/zwobble/example/types/data/GenericNative.java
diff --git a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/HobgoblinNativeData.java b/examples/17-transient-0/output/java/src/main/java/org/zwobble/example/types/data/HobgoblinNativeData.java
index cc26b7b..cc26b7b 100644
--- a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/HobgoblinNativeData.java
+++ b/examples/17-transient-0/output/java/src/main/java/org/zwobble/example/types/data/HobgoblinNativeData.java
diff --git a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/Native.java b/examples/17-transient-0/output/java/src/main/java/org/zwobble/example/types/data/Native.java
index 366dd74..366dd74 100644
--- a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/Native.java
+++ b/examples/17-transient-0/output/java/src/main/java/org/zwobble/example/types/data/Native.java
diff --git a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/transient0/HobgoblinTransient0Data.java b/examples/17-transient-0/output/java/src/main/java/org/zwobble/example/types/data/transient0/HobgoblinTransient0Data.java
index f8799b7..f8799b7 100644
--- a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/transient0/HobgoblinTransient0Data.java
+++ b/examples/17-transient-0/output/java/src/main/java/org/zwobble/example/types/data/transient0/HobgoblinTransient0Data.java
diff --git a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/Decoder.java b/examples/17-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/Decoder.java
index ad1a6d0..ad1a6d0 100644
--- a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/Decoder.java
+++ b/examples/17-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/Decoder.java
diff --git a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/Encoder.java b/examples/17-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/Encoder.java
index 2ba43a6..2ba43a6 100644
--- a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/Encoder.java
+++ b/examples/17-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/Encoder.java
diff --git a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/HobgoblinTransient0Builtins.java b/examples/17-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/HobgoblinTransient0Builtins.java
index 861d7bb..861d7bb 100644
--- a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/HobgoblinTransient0Builtins.java
+++ b/examples/17-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/HobgoblinTransient0Builtins.java
diff --git a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/HobgoblinTransient0TaggedSharedValue.java b/examples/17-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/HobgoblinTransient0TaggedSharedValue.java
index 6c5b520..6c5b520 100644
--- a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/HobgoblinTransient0TaggedSharedValue.java
+++ b/examples/17-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/HobgoblinTransient0TaggedSharedValue.java
diff --git a/examples/16-transient-0/output/java/src/test/java/org/zwobble/example/Transient0Tests.java b/examples/17-transient-0/output/java/src/test/java/org/zwobble/example/Transient0Tests.java
index 1a1d659..1a1d659 100644
--- a/examples/16-transient-0/output/java/src/test/java/org/zwobble/example/Transient0Tests.java
+++ b/examples/17-transient-0/output/java/src/test/java/org/zwobble/example/Transient0Tests.java
diff --git a/examples/16-transient-0/output/rust/.gitignore b/examples/17-transient-0/output/rust/.gitignore
index fc03479..fc03479 100644
--- a/examples/16-transient-0/output/rust/.gitignore
+++ b/examples/17-transient-0/output/rust/.gitignore
diff --git a/examples/17-transient-0/output/rust/Cargo.lock b/examples/17-transient-0/output/rust/Cargo.lock
new file mode 100644
index 0000000..9dc6e3e
--- /dev/null
+++ b/examples/17-transient-0/output/rust/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "example"
+version = "0.1.0"
diff --git a/examples/17-transient-0/output/rust/Cargo.toml b/examples/17-transient-0/output/rust/Cargo.toml
new file mode 100644
index 0000000..5d4c622
--- /dev/null
+++ b/examples/17-transient-0/output/rust/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "example"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
diff --git a/examples/17-transient-0/output/rust/rust-toolchain.toml b/examples/17-transient-0/output/rust/rust-toolchain.toml
new file mode 100644
index 0000000..4fedb95
--- /dev/null
+++ b/examples/17-transient-0/output/rust/rust-toolchain.toml
@@ -0,0 +1,2 @@
+[toolchain]
+channel = "1.96"
diff --git a/examples/16-transient-0/output/rust/src/data.rs b/examples/17-transient-0/output/rust/src/data.rs
index 2b890c2..2b890c2 100644
--- a/examples/16-transient-0/output/rust/src/data.rs
+++ b/examples/17-transient-0/output/rust/src/data.rs
diff --git a/examples/16-transient-0/output/rust/src/gen/data.rs b/examples/17-transient-0/output/rust/src/gen/data.rs
index 2b344e4..2b344e4 100644
--- a/examples/16-transient-0/output/rust/src/gen/data.rs
+++ b/examples/17-transient-0/output/rust/src/gen/data.rs
diff --git a/examples/16-transient-0/output/rust/src/gen/data/transient_0.rs b/examples/17-transient-0/output/rust/src/gen/data/transient_0.rs
index 3c40ea2..3c40ea2 100644
--- a/examples/16-transient-0/output/rust/src/gen/data/transient_0.rs
+++ b/examples/17-transient-0/output/rust/src/gen/data/transient_0.rs
diff --git a/examples/16-transient-0/output/rust/src/gen/transient_0.rs b/examples/17-transient-0/output/rust/src/gen/transient_0.rs
index 1b1b659..1b1b659 100644
--- a/examples/16-transient-0/output/rust/src/gen/transient_0.rs
+++ b/examples/17-transient-0/output/rust/src/gen/transient_0.rs
diff --git a/examples/16-transient-0/output/rust/src/lib.rs b/examples/17-transient-0/output/rust/src/lib.rs
index ea26e60..ea26e60 100644
--- a/examples/16-transient-0/output/rust/src/lib.rs
+++ b/examples/17-transient-0/output/rust/src/lib.rs
diff --git a/examples/16-transient-0/output/rust/src/transient_0.rs b/examples/17-transient-0/output/rust/src/transient_0.rs
index 8b2b800..8b2b800 100644
--- a/examples/16-transient-0/output/rust/src/transient_0.rs
+++ b/examples/17-transient-0/output/rust/src/transient_0.rs
diff --git a/examples/16-transient-0/src/data.hob b/examples/17-transient-0/src/data.hob
index 25fb1be..25fb1be 100644
--- a/examples/16-transient-0/src/data.hob
+++ b/examples/17-transient-0/src/data.hob
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescript/TypescriptGenerator.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescript/TypescriptGenerator.java
index 25435c5..44bad46 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescript/TypescriptGenerator.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescript/TypescriptGenerator.java
@@ -1,6 +1,7 @@
 package org.zwobble.hobgoblin.compiler.output.generators.typescript;
 
 import org.zwobble.hobgoblin.compiler.builtins.NativeTypes;
+import org.zwobble.hobgoblin.compiler.output.lang.typescript.TypescriptTypes;
 import org.zwobble.hobgoblin.compiler.output.lang.typescript.TypescriptWriter;
 import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.*;
 import org.zwobble.hobgoblin.compiler.typechecker.TypesInfo;
@@ -11,6 +12,7 @@ import java.io.File;
 import java.io.IOException;
 import java.nio.file.Path;
 import java.util.LinkedHashSet;
+import java.util.List;
 import java.util.SequencedSet;
 import java.util.stream.Collectors;
 
@@ -81,6 +83,15 @@ public class TypescriptGenerator {
     public TypescriptExpression generateTypeExpression(Type value, Context context) {
         return switch (collapseType(value)) {
             case ConstructedType constructedType -> {
+                if (constructedType.constructor().equals(NativeTypes.OPTION)) {
+                    // TODO: How to deal with nested options? Forbid them in
+                    // hobgoblin?
+                    yield new TypescriptTypeUnion(List.of(
+                        generateTypeExpression(constructedType.args().getFirst(), context),
+                        TypescriptTypes.NULL
+                    ));
+                }
+
                 yield new TypescriptConstructedType(
                     generateTypeExpression(constructedType.constructor().genericType(), context),
                     constructedType.args().stream()
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/TypescriptTypes.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/TypescriptTypes.java
index 22f24a3..e6fa609 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/TypescriptTypes.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/TypescriptTypes.java
@@ -1,5 +1,6 @@
 package org.zwobble.hobgoblin.compiler.output.lang.typescript;
 
+import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptExpression;
 import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptIdentifier;
 import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptRef;
 
@@ -7,6 +8,7 @@ public class TypescriptTypes {
     private TypescriptTypes() {
     }
 
+    public static final TypescriptExpression NULL = new TypescriptRef(TypescriptIdentifier.of("null"));
     public static final TypescriptRef NUMBER = new TypescriptRef(TypescriptIdentifier.of("number"));
     public static final TypescriptRef READONLY_ARRAY = new TypescriptRef(TypescriptIdentifier.of("ReadonlyArray"));
     public static final TypescriptRef SYMBOL = new TypescriptRef(TypescriptIdentifier.of("Symbol"));