Node.js Mode and V8 Mode

Co-existence

Javet support both Node.js mode and V8 mode both of which can co-exist in one JVM. This is an awesome feature with the following highlights.

• Latest V8 features are available in V8 mode.

• Node.js ecosystem is available in Node.js mode.

• There are 2 versions of V8 runtime in 1 JVM and they don't see each other.

Usage

It's very simple to get into Node.js mode or V8 mode. E.g.

V8Host

// Node.js Mode
try (V8Runtime v8Runtime = V8Host.getNodeInstance().createV8Runtime()) {
    // ...
}

// V8 Mode
try (V8Runtime v8Runtime = V8Host.getV8Instance().createV8Runtime()) {
    // ...
}

Pool

// Node.js Mode
try (JavetEnginePool<NodeRuntime> javetEnginePool = new JavetEnginePool<NodeRuntime>()) {
    javetEnginePool.getConfig().setJSRuntimeType(JSRuntimeType.Node);
    try (IJavetEngine<NodeRuntime> javetEngine = javetEnginePool.getEngine()) {
        // ...
    }
}

// V8 Mode
try (JavetEnginePool<V8Runtime> javetEnginePool = new JavetEnginePoo<V8Runtime>l()) {
    javetEnginePool.getConfig().setJSRuntimeType(JSRuntimeType.V8); // Optional, because it defaults to V8.
    try (IJavetEngine<V8Runtime> javetEngine = javetEnginePool.getEngine()) {
        // ...
    }
}

Note

The default mode in pool is V8 mode. More technical detail is available at Javet Design.