Separate license and third-party licenses (#17073)

* Separate license and third-party licenses

* Minor tweak

* Line break

* Add a dot

* DEBUG pkg-pr-new

* Revert "DEBUG pkg-pr-new"

This reverts commit ade850d708c97dd9aee89cf94e1ed9b18ef465ae.

scripts/build/build-dependencies-license.js

@@ -4,8 +4,6 @@ import { outdent } from "outdent";
 import rollupPluginLicense from "rollup-plugin-license";
 import { DIST_DIR, PROJECT_ROOT } from "../utils/index.js";
 
-const PROJECT_LICENSE_FILE = path.join(PROJECT_ROOT, "LICENSE");
-const LICENSE_FILE = path.join(DIST_DIR, "LICENSE");
 const separator = `\n${"-".repeat(40)}\n\n`;
 
 function toBlockQuote(text) {
@@ -44,7 +42,7 @@ function getDependencies(results) {
   return dependencies;
 }
 
-async function getLicenseText(dependencies) {
+function getLicenseText(dependencies) {
   dependencies = dependencies.filter(
     (dependency, index) =>
       // Exclude ourself
@@ -63,8 +61,6 @@ async function getLicenseText(dependencies) {
       dependencyA.version.localeCompare(dependencyB.version),
   );
 
-  const prettierLicense = await fs.readFile(PROJECT_LICENSE_FILE, "utf8");
-
   const licenses = [
     ...new Set(
       dependencies
@@ -73,31 +69,16 @@ async function getLicenseText(dependencies) {
     ),
   ];
 
-  const text = outdent`
-    # Prettier license
+  const head = outdent`
+    # Licenses of bundled dependencies
 
-    Prettier is released under the MIT license:
-
-    ${prettierLicense.trim()}
+    The published Prettier artifact additionally contains code with the following licenses:
+    ${new Intl.ListFormat("en-US", { type: "conjunction" }).format(licenses)}.
   `;
 
-  if (licenses.length === 0) {
-    return text;
-  }
-
-  const parts = [
-    text,
-    outdent`
-      ## Licenses of bundled dependencies
-
-      The published Prettier artifact additionally contains code with the following licenses:
-      ${licenses.join(", ")}
-    `,
-  ];
-
   const content = dependencies
     .map((dependency) => {
-      let text = `### ${dependency.name}@v${dependency.version}\n`;
+      let text = `## ${dependency.name}@v${dependency.version}\n`;
 
       const meta = [];
 
@@ -106,16 +87,16 @@ async function getLicenseText(dependencies) {
       }
 
       if (dependency.license) {
-        meta.push(`License: ${dependency.license}`);
+        meta.push(`License: ${dependency.license}  `);
       }
       if (dependency.homepage) {
-        meta.push(`Homepage: <${dependency.homepage}>`);
+        meta.push(`Homepage: <${dependency.homepage}>  `);
       }
       if (dependency.repository?.url) {
-        meta.push(`Repository: <${dependency.repository.url}>`);
+        meta.push(`Repository: <${dependency.repository.url}>  `);
       }
       if (dependency.author) {
-        meta.push(`Author: ${dependency.author.text()}`);
+        meta.push(`Author: ${dependency.author.text()}  `);
       }
       if (dependency.contributors?.length > 0) {
         const contributors = dependency.contributors
@@ -136,19 +117,14 @@ async function getLicenseText(dependencies) {
     })
     .join(separator);
 
-  return [
-    ...parts,
-    outdent`
-      ## Bundled dependencies
-
-      ${content}
-    `,
-  ].join("\n\n");
+  return [head, content].join("\n\n");
 }
 
-async function buildLicense({ file, files, results, cliOptions }) {
+async function buildDependenciesLicense({ file, files, results, cliOptions }) {
+  const fileName = file.output.file;
+
   if (files.at(-1) !== file) {
-    throw new Error("license should be last file to build.");
+    throw new Error(`${fileName} should be last file to build.`);
   }
 
   const shouldBuildLicense =
@@ -157,7 +133,7 @@ async function buildLicense({ file, files, results, cliOptions }) {
     typeof cliOptions.minify !== "boolean";
 
   if (!shouldBuildLicense) {
-    return;
+    return { skipped: true };
   }
 
   const dependencies = getDependencies(results);
@@ -166,9 +142,9 @@ async function buildLicense({ file, files, results, cliOptions }) {
     throw new Error("Fail to collect dependencies.");
   }
 
-  const text = await getLicenseText(dependencies);
+  const text = getLicenseText(dependencies);
 
-  await fs.writeFile(LICENSE_FILE, text);
+  await fs.writeFile(path.join(DIST_DIR, fileName), text);
 }
 
-export default buildLicense;
+export default buildDependenciesLicense;

scripts/build/config.js

@@ -4,8 +4,8 @@ import url from "node:url";
 import createEsmUtils from "esm-utils";
 import { outdent } from "outdent";
 import { copyFile, DIST_DIR, PROJECT_ROOT } from "../utils/index.js";
+import buildDependenciesLicense from "./build-dependencies-license.js";
 import buildJavascriptModule from "./build-javascript-module.js";
-import buildLicense from "./build-license.js";
 import buildPackageJson from "./build-package-json.js";
 import buildTypes from "./build-types.js";
 import esmifyTypescriptEslint from "./esmify-typescript-eslint.js";
@@ -859,7 +859,13 @@ const metaFiles = [
   },
   {
     input: "LICENSE",
-    build: buildLicense,
+    build: copyFileBuilder,
+  },
+  {
+    output: {
+      file: "THIRD-PARTY-NOTICES.md",
+    },
+    build: buildDependenciesLicense,
   },
 ].map((file) => ({
   ...file,