feat(config/jsr): add license field (#25056)

1. Adds a new "license" field.
1. Adds this field by default when doing `deno init --lib`

Cargo.lock

@@ -1360,9 +1360,9 @@ dependencies = [
 
 [[package]]
 name = "deno_config"
-version = "0.28.0"
+version = "0.29.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc1f3c577bf7fdbb449cb99c2560309364c71cc3dcc7af94387ef8810b089173"
+checksum = "4bc5aa53d1c3a3d0b9fd218e3f30f1080312f811b60e1866b88ec9f665447c4e"
 dependencies = [
  "anyhow",
  "deno_package_json",

cli/Cargo.toml

@@ -65,7 +65,7 @@ winres.workspace = true
 [dependencies]
 deno_ast = { workspace = true, features = ["bundler", "cjs", "codegen", "proposal", "react", "sourcemap", "transforms", "typescript", "view", "visit"] }
 deno_cache_dir = { workspace = true }
-deno_config = { version = "=0.28.0", features = ["workspace", "sync"] }
+deno_config = { version = "=0.29.0", features = ["workspace", "sync"] }
 deno_core = { workspace = true, features = ["include_js_files_for_snapshotting"] }
 deno_doc = { version = "0.146.0", features = ["html", "syntect"] }
 deno_emit = "=0.44.0"

cli/schemas/config-file.v1.json

@@ -546,6 +546,10 @@
         }
       }
     },
+    "license": {
+      "description": "The SPDX license identifier if this is a JSR package. Specify this or add a license file to the package.",
+      "type": ["string"]
+    },
     "lock": {
       "description": "Whether to use a lock file or the path to use for the lock file. Can be overridden by CLI arguments.",
       "type": ["string", "boolean"],

cli/tools/init/mod.rs

@@ -138,6 +138,7 @@ Deno.test(function addTest() {
         "tasks": {
           "dev": "deno test --watch mod.ts"
         },
+        "license": "MIT",
         "imports": {
           "@std/assert": "jsr:@std/assert@1"
         },

cli/tools/registry/diagnostics.rs

@@ -120,8 +120,7 @@ pub enum PublishDiagnostic {
   },
   SyntaxError(ParseDiagnostic),
   MissingLicense {
-    /// This only exists because diagnostics require a location.
+    config_specifier: Url,
-    expected_path: PathBuf,
   },
 }
 
@@ -214,7 +213,7 @@ impl Diagnostic for PublishDiagnostic {
       MissingConstraint { specifier, .. } => Cow::Owned(format!("specifier '{}' is missing a version constraint", specifier)),
       BannedTripleSlashDirectives { .. } => Cow::Borrowed("triple slash directives that modify globals are not allowed"),
       SyntaxError(diagnostic) => diagnostic.message(),
-      MissingLicense { .. } => Cow::Borrowed("missing license file"),
+      MissingLicense { .. } => Cow::Borrowed("missing license field or file"),
     }
   }
 
@@ -282,8 +281,8 @@ impl Diagnostic for PublishDiagnostic {
         text_info: Cow::Borrowed(text_info),
       },
       SyntaxError(diagnostic) => diagnostic.location(),
-      MissingLicense { expected_path } => DiagnosticLocation::Path {
+      MissingLicense { config_specifier } => DiagnosticLocation::Module {
-        path: expected_path.clone(),
+        specifier: Cow::Borrowed(config_specifier),
       },
     }
   }
@@ -400,7 +399,7 @@ impl Diagnostic for PublishDiagnostic {
       ),
       SyntaxError(diagnostic) => diagnostic.hint(),
       MissingLicense { .. } => Some(
-        Cow::Borrowed("add a LICENSE file to the package and ensure it is not ignored from being published"),
+        Cow::Borrowed("add a \"license\" field. Alternatively, add a LICENSE file to the package and ensure it is not ignored from being published"),
       ),
     }
   }

cli/tools/registry/mod.rs

@@ -449,6 +449,8 @@ impl PublishPreparer {
       let cli_options = self.cli_options.clone();
       let source_cache = self.source_cache.clone();
       let config_path = config_path.clone();
+      let config_url = deno_json.specifier.clone();
+      let has_license_field = package.license.is_some();
       move || {
         let root_specifier =
           ModuleSpecifier::from_directory_path(&root_dir).unwrap();
@@ -467,7 +469,9 @@ impl PublishPreparer {
           &diagnostics_collector,
         );
 
-        if !has_license_file(publish_paths.iter().map(|p| &p.specifier)) {
+        if !has_license_field
+          && !has_license_file(publish_paths.iter().map(|p| &p.specifier))
+        {
           if let Some(license_path) =
             resolve_license_file(&root_dir, cli_options.workspace())
           {
@@ -483,7 +487,7 @@ impl PublishPreparer {
             });
           } else {
             diagnostics_collector.push(PublishDiagnostic::MissingLicense {
-              expected_path: root_dir.join("LICENSE"),
+              config_specifier: config_url,
             });
           }
         }

tests/specs/publish/javascript_decl_file/deno.json

@@ -3,5 +3,6 @@
   "version": "1.0.0",
   "exports": {
     ".": "./mod.js"
-  }
+  },
+  "license": "MIT"
 }

tests/specs/publish/missing_license/mod.out

@@ -1,9 +1,9 @@
 Check file:///[WILDLINE]/missing_license/mod.ts
 Checking for slow types in the public API...
 Check file:///[WILDLINE]/missing_license/mod.ts
-error[missing-license]: missing license file
+error[missing-license]: missing license field or file
- --> [WILDLINE]LICENSE
+ --> [WILDLINE]deno.json
-  = hint: add a LICENSE file to the package and ensure it is not ignored from being published
+  = hint: add a "license" field. Alternatively, add a LICENSE file to the package and ensure it is not ignored from being published
 
   docs: https://jsr.io/go/missing-license