Struct deno_core::RuntimeOptions

pub struct RuntimeOptions {

    pub source_map_getter: Option<Box<dyn SourceMapGetter>>,
    pub get_error_class_fn: Option<GetErrorClassFn>,
    pub module_loader: Option<Rc<dyn ModuleLoader>>,
    pub extensions: Vec<Extension>,
    pub startup_snapshot: Option<Snapshot>,
    pub will_snapshot: bool,
    pub snapshot_module_load_cb: Option<ExtModuleLoaderCb>,
    pub create_params: Option<CreateParams>,
    pub v8_platform: Option<SharedRef<Platform>>,
    pub shared_array_buffer_store: Option<SharedArrayBufferStore>,
    pub compiled_wasm_module_store: Option<CompiledWasmModuleStore>,
    pub inspector: bool,
    pub is_main: bool,
}

Fields

source_map_getter: Option<Box<dyn SourceMapGetter>>

Source map reference for errors.

get_error_class_fn: Option<GetErrorClassFn>

Allows to map error type to a string “class” used to represent error in JavaScript.

module_loader: Option<Rc<dyn ModuleLoader>>

Implementation of ModuleLoader which will be called when V8 requests to load ES modules.

If not provided runtime will error if code being executed tries to load modules.

extensions: Vec<Extension>

JsRuntime extensions, not to be confused with ES modules. Only ops registered by extensions will be initialized. If you need to execute JS code from extensions, pass source files in js or esm option on ExtensionBuilder.

If you are creating a runtime from a snapshot take care not to include JavaScript sources in the extensions.

startup_snapshot: Option<Snapshot>

V8 snapshot that should be loaded on startup.

will_snapshot: bool

Prepare runtime to take snapshot of loaded code. The snapshot is deterministic and uses predictable random numbers.

snapshot_module_load_cb: Option<ExtModuleLoaderCb>

An optional callback that will be called for each module that is loaded during snapshotting. This callback can be used to transpile source on the fly, during snapshotting, eg. to transpile TypeScript to JavaScript.

create_params: Option<CreateParams>

Isolate creation parameters.

v8_platform: Option<SharedRef<Platform>>

V8 platform instance to use. Used when Deno initializes V8 (which it only does once), otherwise it’s silenty dropped.

shared_array_buffer_store: Option<SharedArrayBufferStore>

The store to use for transferring SharedArrayBuffers between isolates. If multiple isolates should have the possibility of sharing SharedArrayBuffers, they should use the same SharedArrayBufferStore. If no SharedArrayBufferStore is specified, SharedArrayBuffer can not be serialized.

compiled_wasm_module_store: Option<CompiledWasmModuleStore>

The store to use for transferring WebAssembly.Module objects between isolates. If multiple isolates should have the possibility of sharing WebAssembly.Module objects, they should use the same CompiledWasmModuleStore. If no CompiledWasmModuleStore is specified, WebAssembly.Module objects cannot be serialized.

inspector: bool

Start inspector instance to allow debuggers to connect.

is_main: bool

Describe if this is the main runtime instance, used by debuggers in some situation - like disconnecting when program finishes running.

Trait Implementations

impl Default for RuntimeOptions

fn default() -> RuntimeOptions

Returns the “default value” for a type.