// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license. pub mod convert; #[inline(always)] pub fn get_v8_flags_from_env() -> Vec<String> { std::env::var("DENO_V8_FLAGS") .ok() .map(|flags| flags.split(',').map(String::from).collect::<Vec<String>>()) .unwrap_or_default() } #[inline(always)] pub fn construct_v8_flags( default_v8_flags: &[String], v8_flags: &[String], env_v8_flags: Vec<String>, ) -> Vec<String> { std::iter::once("UNUSED_BUT_NECESSARY_ARG0".to_owned()) .chain(default_v8_flags.iter().cloned()) .chain(env_v8_flags) .chain(v8_flags.iter().cloned()) .collect::<Vec<_>>() } pub fn init_v8_flags( default_v8_flags: &[String], v8_flags: &[String], env_v8_flags: Vec<String>, ) { if default_v8_flags.is_empty() && v8_flags.is_empty() && env_v8_flags.is_empty() { return; } let v8_flags_includes_help = env_v8_flags .iter() .chain(v8_flags) .any(|flag| flag == "-help" || flag == "--help"); // Keep in sync with `standalone.rs`. let v8_flags = construct_v8_flags(default_v8_flags, v8_flags, env_v8_flags); let unrecognized_v8_flags = deno_core::v8_set_flags(v8_flags) .into_iter() .skip(1) .collect::<Vec<_>>(); if !unrecognized_v8_flags.is_empty() { for f in unrecognized_v8_flags { log::error!("error: V8 did not recognize flag '{f}'"); } log::error!("\nFor a list of V8 flags, use '--v8-flags=--help'"); deno_runtime::exit(1); } if v8_flags_includes_help { deno_runtime::exit(0); } }