Struct JsReplTool 

pub struct JsReplTool;

JavaScript REPL tool — executes JavaScript code using Node.js.

Uses a fresh Node.js subprocess per invocation. The code is piped to node --input-type=module on stdin so multi-line programs and await at the top level are supported.

Inspired by Codex’s js_repl tool but uses a simpler sub-process model rather than a persistent kernel.

Implementations

impl JsReplTool

pub fn new() -> Self

Trait Implementations

impl Default for JsReplTool

fn default() -> Self

Returns the “default value” for a type.

impl Tool for JsReplTool

fn name(&self) -> &str

fn description(&self) -> &str

Human-readable tool description for LLM.

fn parameters_schema(&self) -> Value

JSON Schema for tool parameters.

fn execute<'life0, 'async_trait>( &'life0 self, args: Value, ) -> Pin<Box<dyn Future<Output = Result<ToolResult, ToolError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Execute the tool with given arguments.

fn mutability(&self) -> ToolMutability

Declares whether this tool is read-only or mutating for orchestration and parallel scheduling decisions. Defaults to mutating to stay conservative.

fn call_mutability(&self, _args: &Value) -> ToolMutability

Args-aware mutability hook. Defaults to the static mutability declaration.

fn concurrency_safe(&self) -> bool

Declares whether this tool can safely run in parallel with other read-only tools. Defaults to false so tools remain serialized unless they opt in explicitly.

fn call_concurrency_safe(&self, _args: &Value) -> bool

Args-aware parallel-safety hook. Defaults to the static declaration.

fn execute_with_context<'life0, 'life1, 'async_trait>( &'life0 self, args: Value, _ctx: ToolExecutionContext<'life1>, ) -> Pin<Box<dyn Future<Output = Result<ToolResult, ToolError>> + Send + 'async_trait>>

where 'life0: 'async_trait, 'life1: 'async_trait, Self: 'async_trait,

Execute the tool with a streaming-capable context.

fn to_schema(&self) -> ToolSchema

Convert tool to LLM-compatible schema.