Add support for peer deps

.changeset/fresh-masks-retire.md

@@ -0,0 +1,7 @@
+---
+"@definitelytyped/definitions-parser": patch
+"@definitelytyped/eslint-plugin": patch
+"@definitelytyped/header-parser": patch
+---
+
+Add support for peerDependencies

packages/definitions-parser/src/lib/definition-parser.ts

@@ -199,6 +199,7 @@ async function getPackageJsonInfoForPackage(
   const packageJson = fs.readJson(packageJsonName) as {
     readonly license?: unknown;
     readonly dependencies?: unknown;
+    readonly peerDependencies?: unknown;
     readonly devDependencies?: unknown;
     readonly imports?: unknown;
     readonly exports?: unknown;
@@ -217,6 +218,7 @@ async function getPackageJsonInfoForPackage(
   const header = Array.isArray(packageJsonResult) ? undefined : packageJsonResult;
   const allowedDependencies = await getAllowedPackageJsonDependencies();
   errors.push(...checkPackageJsonDependencies(packageJson.dependencies, packageJsonName, allowedDependencies));
+  errors.push(...checkPackageJsonDependencies(packageJson.peerDependencies, packageJsonName, allowedDependencies));
   errors.push(
     ...checkPackageJsonDependencies(
       packageJson.devDependencies,
@@ -248,6 +250,7 @@ async function getPackageJsonInfoForPackage(
     license: license as License,
     dependencies: packageJson.dependencies as Record<string, string>,
     devDependencies: packageJson.devDependencies as Record<string, string>,
+    peerDependencies: packageJson.peerDependencies as Record<string, string> | undefined,
     imports: imports as object | undefined,
     exports: exports as string | object | undefined,
     type: packageJsonType as "module" | undefined,

packages/definitions-parser/src/mocks.ts

@@ -256,6 +256,18 @@ console.log(jQuery);
     }),
   );
 
+  const allowedDep = dt.pkgDir("allowed-dep");
+  allowedDep.set("package.json", packageJson("allowed-dep", "1.0", { "prettier": "*" }));
+
+  const nonAllowedDep = dt.pkgDir("non-allowed-dep");
+  nonAllowedDep.set("package.json", packageJson("non-allowed-dep", "1.0", { "not-allowed": "*" }));
+
+  const allowedPeerDep = dt.pkgDir("allowed-peer-dep");
+  allowedPeerDep.set("package.json", packageJson("allowed-peer-dep", "1.0", {}, { "prettier": "*" }));
+
+  const nonAllowedPeerDep = dt.pkgDir("non-allowed-peer-dep");
+  nonAllowedPeerDep.set("package.json", packageJson("non-allowed-peer-dep", "1.0", {}, { "not-allowed-peer": "*" }));
+
   return dt;
 }
 
@@ -287,7 +299,7 @@ ${testNames.map((s) => "        " + JSON.stringify(s)).join(",\n")}
 }`;
 }
 
-function packageJson(packageName: string, version: string, dependencies: Record<string, string>) {
+function packageJson(packageName: string, version: string, dependencies: Record<string, string>, peerDependencies?: Record<string, string>) {
   return `{
     "private": true,
     "name": "@types/${packageName}",
@@ -302,6 +314,11 @@ function packageJson(packageName: string, version: string, dependencies: Record<
           .map(([name, version]) => `        "${name}": "${version}"`)
           .join(",\n")}
     },
+    ${peerDependencies ? `"peerDependencies": {
+        ${Object.entries(peerDependencies)
+          .map(([name, version]) => `        "${name}": "${version}"`)
+          .join(",\n")}
+    },` : ""}
     "devDependencies": {
         "@types/${packageName}": "workspace:."
     }

packages/definitions-parser/src/packages.ts

@@ -390,6 +390,11 @@ export interface TypingsDataRaw {
    */
   readonly devDependencies: PackageJsonDependencies;
 
+  /**
+   * Packages that this package peer depends on.
+   */
+  readonly peerDependencies?: PackageJsonDependencies;
+
   /**
    * The [older] version of the library that this definition package refers to, as represented *on-disk*.
    *
@@ -523,13 +528,19 @@ export class TypingsData extends PackageBase {
   get devDependencies(): PackageJsonDependencies {
     return this.data.devDependencies ?? {};
   }
+  get peerDependencies(): PackageJsonDependencies {
+    return this.data.peerDependencies ?? {};
+  }
   *allPackageJsonDependencies(): Iterable<[string, string]> {
     for (const [name, version] of Object.entries(this.dependencies)) {
       yield [name, version];
     }
     for (const [name, version] of Object.entries(this.devDependencies)) {
       yield [name, version];
     }
+    for (const [name, version] of Object.entries(this.peerDependencies)) {
+      yield [name, version];
+    }
   }
 
   private _contentHash: string | undefined;

packages/definitions-parser/test/definition-parser.test.ts

@@ -429,4 +429,38 @@ import route = require('@ember/routing/route');
     const dt = createMockDT();
     return expect(getTypingInfo("wordpress__plugins", dt.fs)).resolves.toBeDefined();
   });
+
+  it("does not error on allowed dependencies", () => {
+    const dt = createMockDT();
+
+    return expect(getTypingInfo("allowed-dep", dt.fs)).resolves.not.toHaveProperty("errors");
+  });
+
+  it("errors on non-allowed dependencies", () => {
+    const dt = createMockDT();
+
+    return expect(getTypingInfo("non-allowed-dep", dt.fs)).resolves.toEqual({
+      errors: [
+        "In package.json: Dependency not-allowed not in the allowed dependencies list.\n" +
+        "Please make a pull request to microsoft/DefinitelyTyped-tools adding it to `packages/definitions-parser/allowedPackageJsonDependencies.txt`.",
+      ],
+    });
+  });
+
+  it("does not error on allowed peer dependencies", () => {
+    const dt = createMockDT();
+
+    return expect(getTypingInfo("allowed-peer-dep", dt.fs)).resolves.not.toHaveProperty("errors");
+  });
+
+  it("errors on non-allowed peer dependencies", () => {
+    const dt = createMockDT();
+
+    return expect(getTypingInfo("non-allowed-peer-dep", dt.fs)).resolves.toEqual({
+      errors: [
+        "In package.json: Dependency not-allowed-peer not in the allowed dependencies list.\n" +
+        "Please make a pull request to microsoft/DefinitelyTyped-tools adding it to `packages/definitions-parser/allowedPackageJsonDependencies.txt`.",
+      ],
+    });
+  });
 });

packages/definitions-parser/test/packages.test.ts

@@ -136,6 +136,9 @@ describe(TypingsData, () => {
       {
         "@types/known": "workspace:.",
       },
+      {
+        "peer-dependency-1": "*",
+      }
     );
     data = new TypingsData(dt.fs, versions["1.0"], true);
   });
@@ -164,6 +167,9 @@ describe(TypingsData, () => {
     expect(data.devDependencies).toEqual({
       "@types/known": "workspace:.",
     });
+    expect(data.peerDependencies).toEqual({
+      "peer-dependency-1": "*",
+    });
     expect(data.id).toEqual({
       typesDirectoryName: "known",
       version: {

packages/definitions-parser/test/utils.ts

@@ -12,6 +12,7 @@ export function createTypingsVersionRaw(
   libraryName: string,
   dependencies: { readonly [name: string]: string },
   devDependencies: { readonly [name: string]: string },
+  peerDependencies?: { readonly [name: string]: string },
 ): TypingsVersionsRaw {
   return {
     "1.0": {
@@ -29,6 +30,7 @@ export function createTypingsVersionRaw(
       license: License.MIT,
       dependencies,
       devDependencies,
+      peerDependencies,
       olderVersionDirectories: [],
     },
   };

packages/eslint-plugin/src/rules/no-import-of-dev-dependencies.ts

@@ -39,7 +39,7 @@ const rule = createRule({
         }
         return dep;
       })
-      .filter((dep) => dep !== info.realName && packageJson.dependencies?.[dep] === undefined); // TODO(jakebailey): add test for this case from https://github.com/microsoft/DefinitelyTyped-tools/pull/773
+      .filter((dep) => dep !== info.realName && packageJson.dependencies?.[dep] === undefined && packageJson.peerDependencies?.[dep] === undefined); // TODO(jakebailey): add test for this case from https://github.com/microsoft/DefinitelyTyped-tools/pull/773
 
     commentsMatching(context.sourceCode, /<reference\s+types\s*=\s*"(.+)"\s*\/>/, (ref, comment) => {
       if (devDeps.includes(ref)) {

packages/eslint-plugin/src/util.ts

@@ -67,6 +67,7 @@ export interface PackageJSON {
   owners: string[];
   dependencies?: Record<string, string | undefined>;
   devDependencies?: Record<string, string | undefined>;
+  peerDependencies?: Record<string, string | undefined>;
   tsconfigs?: string[];
 }
 

packages/header-parser/src/index.ts

@@ -63,6 +63,7 @@ export function validatePackageJson(
       case "name":
       case "version":
       case "devDependencies":
+      case "peerDependencies":
       case "projects":
       case "minimumTypeScriptVersion":
       case "owners":

packages/header-parser/test/index.test.ts

@@ -42,6 +42,7 @@ describe("validatePackageJson", () => {
   const header = { ...pkgJson, nonNpm: false, libraryMajorVersion: 18, libraryMinorVersion: 0 };
   delete (header as any).dependencies;
   delete (header as any).devDependencies;
+  delete (header as any).peerDependencies;
   delete (header as any).private;
   delete (header as any).version;
   it("requires private: true", () => {

packages/mergebot/src/_tests/fixtures/70751/_downloads.json

@@ -0,0 +1,3 @@
+{
+  "express": 102459932
+}

packages/mergebot/src/_tests/fixtures/70751/_files.json

@@ -0,0 +1,6 @@
+{
+  "9856226df8d03bf135be670297bb5bf01f79625a:types/express/package.json": "{\n    \"private\": true,\n    \"name\": \"@types/express\",\n    \"version\": \"5.0.9999\",\n    \"projects\": [\n        \"http://expressjs.com\"\n    ],\n    \"dependencies\": {\n        \"@types/body-parser\": \"*\",\n        \"@types/qs\": \"*\",\n        \"@types/serve-static\": \"*\"\n    },\n    \"peerDependencies\": {\n        \"@types/express-serve-static-core\": \"^5.0.0\"\n    },\n    \"devDependencies\": {\n        \"@types/express\": \"workspace:.\",\n        \"@types/node\": \"*\"\n    },\n    \"owners\": [\n        {\n            \"name\": \"Boris Yankov\",\n            \"githubUsername\": \"borisyankov\"\n        },\n        {\n            \"name\": \"China Medical University Hospital\",\n            \"githubUsername\": \"CMUH\"\n        },\n        {\n            \"name\": \"Puneet Arora\",\n            \"githubUsername\": \"puneetar\"\n        },\n        {\n            \"name\": \"Dylan Frankland\",\n            \"githubUsername\": \"dfrankland\"\n        }\n    ]\n}\n",
+  "b6d1f2876fe51aed6de22ab5a293daf0e3b16ab2:types/express/package.json": "{\n    \"private\": true,\n    \"name\": \"@types/express\",\n    \"version\": \"5.0.9999\",\n    \"projects\": [\n        \"http://expressjs.com\"\n    ],\n    \"dependencies\": {\n        \"@types/body-parser\": \"*\",\n        \"@types/express-serve-static-core\": \"^5.0.0\",\n        \"@types/qs\": \"*\",\n        \"@types/serve-static\": \"*\"\n    },\n    \"devDependencies\": {\n        \"@types/express\": \"workspace:.\",\n        \"@types/node\": \"*\"\n    },\n    \"owners\": [\n        {\n            \"name\": \"Boris Yankov\",\n            \"githubUsername\": \"borisyankov\"\n        },\n        {\n            \"name\": \"China Medical University Hospital\",\n            \"githubUsername\": \"CMUH\"\n        },\n        {\n            \"name\": \"Puneet Arora\",\n            \"githubUsername\": \"puneetar\"\n        },\n        {\n            \"name\": \"Dylan Frankland\",\n            \"githubUsername\": \"dfrankland\"\n        }\n    ]\n}\n",
+  "9856226df8d03bf135be670297bb5bf01f79625a:types/express/v4/package.json": "{\n    \"private\": true,\n    \"name\": \"@types/express\",\n    \"version\": \"4.17.9999\",\n    \"projects\": [\n        \"http://expressjs.com\"\n    ],\n    \"dependencies\": {\n        \"@types/body-parser\": \"*\",\n        \"@types/qs\": \"*\",\n        \"@types/serve-static\": \"*\"\n    },\n    \"peerDependencies\": {\n        \"@types/express-serve-static-core\": \"^4.17.33\"\n    },\n    \"devDependencies\": {\n        \"@types/express\": \"workspace:.\",\n        \"@types/node\": \"*\"\n    },\n    \"owners\": [\n        {\n            \"name\": \"Boris Yankov\",\n            \"githubUsername\": \"borisyankov\"\n        },\n        {\n            \"name\": \"China Medical University Hospital\",\n            \"githubUsername\": \"CMUH\"\n        },\n        {\n            \"name\": \"Puneet Arora\",\n            \"githubUsername\": \"puneetar\"\n        },\n        {\n            \"name\": \"Dylan Frankland\",\n            \"githubUsername\": \"dfrankland\"\n        }\n    ]\n}\n",
+  "b6d1f2876fe51aed6de22ab5a293daf0e3b16ab2:types/express/v4/package.json": "{\n    \"private\": true,\n    \"name\": \"@types/express\",\n    \"version\": \"4.17.9999\",\n    \"projects\": [\n        \"http://expressjs.com\"\n    ],\n    \"dependencies\": {\n        \"@types/body-parser\": \"*\",\n        \"@types/express-serve-static-core\": \"^4.17.33\",\n        \"@types/qs\": \"*\",\n        \"@types/serve-static\": \"*\"\n    },\n    \"devDependencies\": {\n        \"@types/express\": \"workspace:.\",\n        \"@types/node\": \"*\"\n    },\n    \"owners\": [\n        {\n            \"name\": \"Boris Yankov\",\n            \"githubUsername\": \"borisyankov\"\n        },\n        {\n            \"name\": \"China Medical University Hospital\",\n            \"githubUsername\": \"CMUH\"\n        },\n        {\n            \"name\": \"Puneet Arora\",\n            \"githubUsername\": \"puneetar\"\n        },\n        {\n            \"name\": \"Dylan Frankland\",\n            \"githubUsername\": \"dfrankland\"\n        }\n    ]\n}\n"
+}

packages/mergebot/src/_tests/fixtures/70751/_response.json

@@ -0,0 +1,149 @@
+{
+  "data": {
+    "repository": {
+      "id": "MDEwOlJlcG9zaXRvcnk2MDkzMzE2",
+      "pullRequest": {
+        "id": "PR_kwDOAFz6BM59K3Uu",
+        "title": "Use peer dep for express",
+        "createdAt": "2024-09-30T20:54:41Z",
+        "author": {
+          "login": "jakebailey",
+          "__typename": "User"
+        },
+        "authorAssociation": "MEMBER",
+        "baseRef": {
+          "name": "master",
+          "__typename": "Ref"
+        },
+        "labels": {
+          "nodes": [],
+          "__typename": "LabelConnection"
+        },
+        "isDraft": false,
+        "mergeable": "MERGEABLE",
+        "number": 70751,
+        "state": "OPEN",
+        "headRefOid": "9856226df8d03bf135be670297bb5bf01f79625a",
+        "changedFiles": 2,
+        "additions": 6,
+        "deletions": 2,
+        "commitIds": {
+          "nodes": [
+            {
+              "commit": {
+                "oid": "9856226df8d03bf135be670297bb5bf01f79625a",
+                "parents": {
+                  "nodes": [
+                    {
+                      "oid": "b6d1f2876fe51aed6de22ab5a293daf0e3b16ab2",
+                      "__typename": "Commit"
+                    }
+                  ],
+                  "__typename": "CommitConnection"
+                },
+                "__typename": "Commit"
+              },
+              "__typename": "PullRequestCommit"
+            }
+          ],
+          "__typename": "PullRequestCommitConnection"
+        },
+        "timelineItems": {
+          "nodes": [],
+          "__typename": "PullRequestTimelineItemsConnection"
+        },
+        "reviews": {
+          "nodes": [],
+          "__typename": "PullRequestReviewConnection"
+        },
+        "commits": {
+          "totalCount": 1,
+          "nodes": [
+            {
+              "commit": {
+                "checkSuites": {
+                  "nodes": [
+                    {
+                      "databaseId": 29037908492,
+                      "app": {
+                        "name": "GitHub Actions",
+                        "__typename": "App"
+                      },
+                      "conclusion": null,
+                      "resourcePath": "/DefinitelyTyped/DefinitelyTyped/commit/9856226df8d03bf135be670297bb5bf01f79625a/checks?check_suite_id=29037908492",
+                      "status": "IN_PROGRESS",
+                      "url": "https://github.com/DefinitelyTyped/DefinitelyTyped/commit/9856226df8d03bf135be670297bb5bf01f79625a/checks?check_suite_id=29037908492",
+                      "checkRuns": {
+                        "nodes": [
+                          {
+                            "title": null,
+                            "__typename": "CheckRun"
+                          }
+                        ],
+                        "__typename": "CheckRunConnection"
+                      },
+                      "createdAt": "2024-09-30T20:54:45Z",
+                      "workflowRun": {
+                        "file": {
+                          "path": ".github/workflows/CI.yml",
+                          "__typename": "WorkflowRunFile"
+                        },
+                        "__typename": "WorkflowRun"
+                      },
+                      "__typename": "CheckSuite"
+                    }
+                  ],
+                  "__typename": "CheckSuiteConnection"
+                },
+                "status": null,
+                "authoredDate": "2024-09-30T20:54:04Z",
+                "committedDate": "2024-09-30T20:54:04Z",
+                "pushedDate": null,
+                "oid": "9856226df8d03bf135be670297bb5bf01f79625a",
+                "__typename": "Commit"
+              },
+              "__typename": "PullRequestCommit"
+            }
+          ],
+          "__typename": "PullRequestCommitConnection"
+        },
+        "comments": {
+          "totalCount": 0,
+          "nodes": [],
+          "__typename": "IssueCommentConnection"
+        },
+        "files": {
+          "totalCount": 2,
+          "nodes": [
+            {
+              "path": "types/express/package.json",
+              "additions": 3,
+              "deletions": 1,
+              "__typename": "PullRequestChangedFile"
+            },
+            {
+              "path": "types/express/v4/package.json",
+              "additions": 3,
+              "deletions": 1,
+              "__typename": "PullRequestChangedFile"
+            }
+          ],
+          "pageInfo": {
+            "hasNextPage": false,
+            "endCursor": "Mg",
+            "__typename": "PageInfo"
+          },
+          "__typename": "PullRequestChangedFileConnection"
+        },
+        "projectItems": {
+          "nodes": [],
+          "__typename": "ProjectV2ItemConnection"
+        },
+        "__typename": "PullRequest"
+      },
+      "__typename": "Repository"
+    }
+  },
+  "loading": false,
+  "networkStatus": 7
+}