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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
use deno_core::url::Url;
use std::collections::HashMap;
// TODO(bartlomieju): this needs to be bumped manually for
// each release, a better mechanism is preferable, but it's a quick and dirty
// solution to avoid printing `X-Deno-Warning` headers when the compat layer is
// downloaded
static STD_URL: &str = "https://deno.land/std@0.110.0/";
static GLOBAL_MODULE: &str = "global.ts";
static SUPPORTED_MODULES: &[&str] = &[
"assert",
"assert/strict",
"async_hooks",
"buffer",
"child_process",
"cluster",
"console",
"constants",
"crypto",
"dgram",
"dns",
"domain",
"events",
"fs",
"fs/promises",
"http",
"https",
"module",
"net",
"os",
"path",
"path/posix",
"path/win32",
"perf_hooks",
"process",
"querystring",
"readline",
"stream",
"stream/promises",
"stream/web",
"string_decoder",
"sys",
"timers",
"timers/promises",
"tls",
"tty",
"url",
"util",
"util/types",
"v8",
"vm",
"zlib",
];
lazy_static::lazy_static! {
static ref GLOBAL_URL_STR: String = format!("{}node/{}", STD_URL, GLOBAL_MODULE);
pub(crate) static ref GLOBAL_URL: Url = Url::parse(&GLOBAL_URL_STR).unwrap();
static ref COMPAT_IMPORT_URL: Url = Url::parse("flags:compat").unwrap();
}
/// Provide imports into a module graph when the compat flag is true.
pub(crate) fn get_node_imports() -> Vec<(Url, Vec<String>)> {
vec![(COMPAT_IMPORT_URL.clone(), vec![GLOBAL_URL_STR.clone()])]
}
/// Create a map that can be used to update import map.
///
/// Keys are built-in Node modules (and built-ins prefixed with "node:"), while
/// values are URLs pointing to relevant files in deno.land/std/node/ directory.
pub fn get_mapped_node_builtins() -> HashMap<String, String> {
let mut mappings = HashMap::new();
for module in SUPPORTED_MODULES {
// TODO(bartlomieju): this is unversioned, and should be fixed to use latest stable?
let module_url = format!("{}node/{}.ts", STD_URL, module);
mappings.insert(module.to_string(), module_url.clone());
// Support for `node:<module_name>`
// https://nodejs.org/api/esm.html#esm_node_imports
let node_prefixed = format!("node:{}", module);
mappings.insert(node_prefixed, module_url);
}
mappings
}
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