nodejs
diff --git a/‎benchmark/fixtures/strip-types-benchmark.js‎
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diff --git a/‎benchmark/fixtures/strip-types-benchmark.ts‎
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diff --git a/‎benchmark/fixtures/transform-types-benchmark.js‎
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diff --git a/‎benchmark/fixtures/transform-types-benchmark.ts‎
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diff --git a/‎benchmark/ts/strip-typescript.js‎
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diff --git a/‎benchmark/ts/transform-typescript.js‎
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+function processData(input) {
+    return {
+        ...input,
+        b: input.b + 1
+    };
+}
+
+const data = {
+    a: "test",
+    b: 42,
+    c: true,
+    d: {
+        e: ["hello", "world"],
+        f: {
+            g: 100,
+            h: ["str", 123, false]
+        }
+    }
+};
+
+export const result = processData(data);
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+type ComplexType = {
+    a: string;
+    b: number;
+    c: boolean;
+    d: {
+        e: string[];
+        f: {
+            g: number;
+            h: [string, number, boolean];
+        };
+    };
+};
+
+function processData(input: ComplexType): ComplexType {
+    return {
+        ...input,
+        b: input.b + 1
+    };
+}
+
+const data: ComplexType = {
+    a: "test",
+    b: 42,
+    c: true,
+    d: {
+        e: ["hello", "world"],
+        f: {
+            g: 100,
+            h: ["str", 123, false]
+        }
+    }
+};
+
+export const result = processData(data);
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+var Color;
+(function (Color) {
+    Color[Color["Red"] = 0] = "Red";
+    Color[Color["Green"] = 1] = "Green";
+    Color[Color["Blue"] = 2] = "Blue";
+})(Color || (Color = {}));
+var Geometry;
+(function (Geometry) {
+    class Circle {
+        constructor(center, radius) {
+            this.center = center;
+            this.radius = radius;
+        }
+        area() {
+            return Math.PI * Math.pow(this.radius, 2);
+        }
+    }
+    Geometry.Circle = Circle;
+})(Geometry || (Geometry = {}));
+function processShape(color, shape) {
+    const colorName = Color[color];
+    const area = shape.area().toFixed(2);
+    return `A ${colorName} circle with area ${area}`;
+}
+
+const point = { x: 0, y: 0 };
+const circle = new Geometry.Circle(point, 5);
+export const result = processShape(Color.Blue, circle);
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+enum Color {
+    Red,
+    Green,
+    Blue
+}
+
+namespace Geometry {
+    export interface Point {
+        x: number;
+        y: number;
+    }
+
+    export class Circle {
+        constructor(public center: Point, public radius: number) { }
+
+        area(): number {
+            return Math.PI * this.radius ** 2;
+        }
+    }
+}
+
+function processShape(color: Color, shape: Geometry.Circle): string {
+    const colorName = Color[color];
+    const area = shape.area().toFixed(2);
+    return `A ${colorName} circle with area ${area}`;
+}
+
+const point: Geometry.Point = { x: 0, y: 0 };
+const circle = new Geometry.Circle(point, 5);
+export const result = processShape(Color.Blue, circle);
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+'use strict';
+
+const common = require('../common');
+const path = require('path');
+const assert = require('node:assert');
+
+
+const js = path.resolve(__dirname, '../fixtures/strip-types-benchmark.js');
+const ts = path.resolve(__dirname, '../fixtures/strip-types-benchmark.ts');
+
+const bench = common.createBenchmark(main, {
+  filepath: [ts, js],
+  n: [1e4],
+}, {
+  flags: ['--experimental-strip-types', '--disable-warning=ExperimentalWarning'],
+});
+
+async function main({ n, filepath }) {
+  let output;
+  bench.start();
+  for (let i = 0; i < n; i++) {
+    const { result } = await import(`${filepath}?${i}`);
+    output = result;
+  }
+  bench.end(n);
+  assert.ok(output);
+}
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+'use strict';
+
+const common = require('../common');
+const path = require('path');
+const assert = require('node:assert');
+
+const js = path.resolve(__dirname, '../fixtures/transform-types-benchmark.js');
+const ts = path.resolve(__dirname, '../fixtures/transform-types-benchmark.ts');
+
+const bench = common.createBenchmark(main, {
+  filepath: [js, ts],
+  n: [1e4],
+}, {
+  flags: ['--experimental-transform-types', '--disable-warning=ExperimentalWarning'],
+});
+
+async function main({ n, filepath }) {
+  let output;
+  bench.start();
+  for (let i = 0; i < n; i++) {
+    const { result } = await import(`${filepath}?${i}`);
+    output = result;
+  }
+  bench.end(n);
+  assert.ok(output);
+}