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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
use std::path::PathBuf;
use deno_core::error::AnyError;
use deno_runtime::deno_node::PackageJson;
use crate::args::ConfigFile;
use crate::Flags;
use super::DenoSubcommand;
use super::InstallFlags;
use super::InstallKind;
pub use deno_lockfile::Lockfile;
pub use deno_lockfile::LockfileError;
pub fn discover(
flags: &Flags,
maybe_config_file: Option<&ConfigFile>,
maybe_package_json: Option<&PackageJson>,
) -> Result<Option<Lockfile>, AnyError> {
if flags.no_lock
|| matches!(
flags.subcommand,
DenoSubcommand::Install(InstallFlags {
kind: InstallKind::Global(..),
..
}) | DenoSubcommand::Uninstall(_)
)
{
return Ok(None);
}
let filename = match flags.lock {
Some(ref lock) => PathBuf::from(lock),
None => match maybe_config_file {
Some(config_file) => {
if config_file.specifier.scheme() == "file" {
match config_file.resolve_lockfile_path()? {
Some(path) => path,
None => return Ok(None),
}
} else {
return Ok(None);
}
}
None => match maybe_package_json {
Some(package_json) => {
package_json.path.parent().unwrap().join("deno.lock")
}
None => return Ok(None),
},
},
};
let lockfile = Lockfile::new(filename, flags.lock_write)?;
Ok(Some(lockfile))
}
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