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fix: improved support for cjs and cts modules #26558

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merged 56 commits into from
Nov 1, 2024

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dsherret
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@dsherret dsherret commented Oct 25, 2024

Closes #26651
Closes #25498

@dsherret dsherret changed the title fix: cts support fix: improved support for cjs and cts modules Oct 25, 2024
dsherret added a commit that referenced this pull request Oct 28, 2024
@dsherret dsherret marked this pull request as ready for review October 30, 2024 21:33
pub struct ModuleInfoCache {
conn: CacheDB,
parsed_source_cache: Arc<ParsedSourceCache>,
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Shifted from being pased along horizontally to being a ctor dependency.

}
}

pub fn analyze_sync(
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This sync version is for the require loader.

// this will conditionally parse because it's using a CapturingModuleParser
parser.parse_module(ParseOptions {
// this will conditionally parse because it's using a CapturingEsParser
parser.parse_program(ParseOptions {
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Part of this PR is shifting everything over to using parse_program so that we can quickly tell if a module is definitely an ES module.

@@ -150,42 +147,3 @@ impl deno_graph::ParsedSourceStore for ParsedSourceCache {
}
}
}

pub struct EsmOrCjsChecker {
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This was removed and replaced with CjsTracker.

) -> MediaType {
if resolver.in_node_modules(specifier) {
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We don't change the media type from stuff like JS to TS when providing it to typescript anymore because this isn't something we can determine at resolution (only when loading). This is fine because we tell typescript about the "node module kind" (if ESM or CJS)

Ok(Cow::Borrowed(path))
}
}
}
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This was moved into the NodeRequireLoader


pub fn url_to_node_resolution(
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url_to_node_resolution is gone since we no longer determine if something is esm or cjs at resolution time, but rather after loading when we can see if it has imports/exports/tla/etc.

Self { env }
}

pub fn get_closest_package_json(
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All this code was extracted out of other places.

@@ -73,16 +66,14 @@ impl NodeResolutionMode {

#[derive(Debug)]
pub enum NodeResolution {
Esm(Url),
CommonJs(Url),
Module(Url),
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We no longer know this at resolution time.

Cargo.toml Outdated
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I'm sorry, this PR is hard to split up into multiple smaller ones. There's so much stuff that's intertwined.

The main themes are using "program" more and determining if a js, jsx, ts, or tsx file is cjs or esm always only happens after loading it now.

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cc @arnauorriols on these changes and this PR in general. There's now a NodeRequireLoader trait for loading files with require(...) and PackageJsonResolver struct that searches for package.jsons. Let me know if you'd like a walkthrough of the changes.

@dsherret dsherret mentioned this pull request Oct 31, 2024
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First pass, ended at cli/resolver.rs because the rest of files doesn't load in the browser :(

cli/args/mod.rs Show resolved Hide resolved
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Comment on lines +581 to +582
// todo(dsherret): support in the lsp by stabilizing the feature
// so that we don't have to pipe the config in here
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Maybe link it in an issue so it's not forgotten?

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Or the PR that stabilizes it

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The tracking issue has it: #26225 (just updated it to be more clear)

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@@ -53,16 +53,6 @@ pub async fn compile(
);
}

if cli_options.unstable_detect_cjs() {
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Is this on purpose? Shouldn't we land #26439 first?

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Yes. It works in deno compile now so I got rid of the warning saying it doesn't work.

})
.unwrap_or(false);
// todo(dsherret): how to avoid cloning here?
Ok(code.to_string())
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We can make OpLoadResponse accept Arc<str> and then the op_load would return a v8::Array that would manually serialize to v8::String


let source_code = format!(
r#"(function loadCjsModule(moduleName, isMain, inspectBrk) {{
Deno[Deno.internal].node.loadCjsModule(moduleName, isMain, inspectBrk);
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loadCjsModule can probably be removed now. I can do that in a follow up

@dsherret dsherret merged commit 826e42a into denoland:main Nov 1, 2024
17 checks passed
@dsherret dsherret deleted the refactor_handle_program_more branch November 1, 2024 16:27
bartlomieju added a commit that referenced this pull request Nov 5, 2024
* cts support
* better cjs/cts type checking
* deno compile cjs/cts support
* More efficient detect cjs (going towards stabilization)
* Determination of whether .js, .ts, .jsx, or .tsx is cjs or esm is only
done after loading
* Support `import x = require(...);`

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
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Support for import x = require("...") .cjs extension is supported, but not .cts in version 2 (rc)
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