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98 lines
2.8 KiB
Rust
98 lines
2.8 KiB
Rust
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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use deno_core::anyhow::Context;
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use deno_core::error::AnyError;
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use deno_core::serde_json;
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use deno_core::url::Url;
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use deno_runtime::permissions::PermissionsContainer;
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use import_map::ImportMap;
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use import_map::ImportMapDiagnostic;
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use log::warn;
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use super::ConfigFile;
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use crate::file_fetcher::FileFetcher;
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pub async fn resolve_import_map(
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specified_specifier: Option<&Url>,
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maybe_config_file: Option<&ConfigFile>,
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file_fetcher: &FileFetcher,
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) -> Result<Option<ImportMap>, AnyError> {
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if let Some(specifier) = specified_specifier {
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resolve_import_map_from_specifier(specifier.clone(), file_fetcher)
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.await
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.with_context(|| format!("Unable to load '{}' import map", specifier))
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.map(Some)
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} else if let Some(config_file) = maybe_config_file {
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let maybe_url_and_value = config_file
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.to_import_map_value(|specifier| {
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let specifier = specifier.clone();
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async move {
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let file = file_fetcher
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.fetch(&specifier, PermissionsContainer::allow_all())
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.await?
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.into_text_decoded()?;
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Ok(file.source.to_string())
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}
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})
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.await
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.with_context(|| {
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format!(
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"Unable to resolve import map in '{}'",
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config_file.specifier
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)
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})?;
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match maybe_url_and_value {
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Some((url, value)) => {
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import_map_from_value(url.into_owned(), value).map(Some)
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}
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None => Ok(None),
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}
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} else {
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Ok(None)
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}
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}
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async fn resolve_import_map_from_specifier(
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specifier: Url,
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file_fetcher: &FileFetcher,
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) -> Result<ImportMap, AnyError> {
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let value: serde_json::Value = if specifier.scheme() == "data" {
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let data_url_text =
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deno_graph::source::RawDataUrl::parse(&specifier)?.decode()?;
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serde_json::from_str(&data_url_text)?
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} else {
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let file = file_fetcher
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.fetch(&specifier, PermissionsContainer::allow_all())
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.await?
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.into_text_decoded()?;
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serde_json::from_str(&file.source)?
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};
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import_map_from_value(specifier, value)
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}
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pub fn import_map_from_value(
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specifier: Url,
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json_value: serde_json::Value,
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) -> Result<ImportMap, AnyError> {
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debug_assert!(
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!specifier.as_str().contains("../"),
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"Import map specifier incorrectly contained ../: {}",
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specifier.as_str()
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);
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let result = import_map::parse_from_value(specifier, json_value)?;
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print_import_map_diagnostics(&result.diagnostics);
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Ok(result.import_map)
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}
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fn print_import_map_diagnostics(diagnostics: &[ImportMapDiagnostic]) {
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if !diagnostics.is_empty() {
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warn!(
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"Import map diagnostics:\n{}",
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diagnostics
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.iter()
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.map(|d| format!(" - {d}"))
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.collect::<Vec<_>>()
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.join("\n")
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);
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}
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}
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