Create a JavaScript context — JSContext-new • QuickJSR

Creates a persistent QuickJS runtime and context.

Usage

new_JSContext(
  stack_size = NULL,
  profile = c("host", "standard", "bare")
)

Arguments

stack_size: Optional maximum JavaScript stack size in bytes.
profile: Context facilities to install. See Details.

Value

A persistent JSContext.

Details

Create contexts through JSContext$new().

The host profile preserves the complete API with std, os, console helpers, and the global R bridge. The standard profile installs std, os, and console helpers without the global R bridge. The bare profile installs only the core JavaScript runtime. R values can still be passed through context methods in every profile.

Examples

ctx <- JSContext$new(profile = "bare")
ctx$source(code = "function add(a, b) { return a + b; }")
ctx$call("add", 2, 3)
#> [1] 5