[api-extractor] Fixed empty lines for removed lines

apps/api-extractor/src/generators/DtsRollupGenerator.ts

@@ -449,6 +449,10 @@ export class DtsRollupGenerator {
               }
             }
 
+            if (/^\s*$/.test(modification.suffix) && /^\s*$/.test(modification.prefix)) {
+              modification.suffix = modification.prefix = '';
+            }
+
             trimmed = true;
           }
         }

build-tests/api-extractor-scenarios/etc/omitNewlines/alpha-rollup.d.ts

@@ -0,0 +1,19 @@
+/**
+ * @public
+ */
+export declare class Combiner {
+    /**
+     * @alpha
+     */
+    alphaMember(x: boolean, y: boolean): boolean;
+    /**
+     * @beta
+     */
+    betaMember(x: string, y: string): string;
+    /**
+     * @public
+     */
+    publicMember(x: number, y: number): number;
+}
+
+export { }

build-tests/api-extractor-scenarios/etc/omitNewlines/api-extractor-scenarios.api.json

@@ -0,0 +1,341 @@
+{
+  "metadata": {
+    "toolPackage": "@microsoft/api-extractor",
+    "toolVersion": "[test mode]",
+    "schemaVersion": 1011,
+    "oldestForwardsCompatibleVersion": 1001,
+    "tsdocConfig": {
+      "$schema": "https://developer.microsoft.com/json-schemas/tsdoc/v0/tsdoc.schema.json",
+      "noStandardTags": true,
+      "tagDefinitions": [
+        {
+          "tagName": "@alpha",
+          "syntaxKind": "modifier"
+        },
+        {
+          "tagName": "@beta",
+          "syntaxKind": "modifier"
+        },
+        {
+          "tagName": "@defaultValue",
+          "syntaxKind": "block"
+        },
+        {
+          "tagName": "@decorator",
+          "syntaxKind": "block",
+          "allowMultiple": true
+        },
+        {
+          "tagName": "@deprecated",
+          "syntaxKind": "block"
+        },
+        {
+          "tagName": "@eventProperty",
+          "syntaxKind": "modifier"
+        },
+        {
+          "tagName": "@example",
+          "syntaxKind": "block",
+          "allowMultiple": true
+        },
+        {
+          "tagName": "@experimental",
+          "syntaxKind": "modifier"
+        },
+        {
+          "tagName": "@inheritDoc",
+          "syntaxKind": "inline"
+        },
+        {
+          "tagName": "@internal",
+          "syntaxKind": "modifier"
+        },
+        {
+          "tagName": "@label",
+          "syntaxKind": "inline"
+        },
+        {
+          "tagName": "@link",
+          "syntaxKind": "inline",
+          "allowMultiple": true
+        },
+        {
+          "tagName": "@override",
+          "syntaxKind": "modifier"
+        },
+        {
+          "tagName": "@packageDocumentation",
+          "syntaxKind": "modifier"
+        },
+        {
+          "tagName": "@param",
+          "syntaxKind": "block",
+          "allowMultiple": true
+        },
+        {
+          "tagName": "@privateRemarks",
+          "syntaxKind": "block"
+        },
+        {
+          "tagName": "@public",
+          "syntaxKind": "modifier"
+        },
+        {
+          "tagName": "@readonly",
+          "syntaxKind": "modifier"
+        },
+        {
+          "tagName": "@remarks",
+          "syntaxKind": "block"
+        },
+        {
+          "tagName": "@returns",
+          "syntaxKind": "block"
+        },
+        {
+          "tagName": "@sealed",
+          "syntaxKind": "modifier"
+        },
+        {
+          "tagName": "@see",
+          "syntaxKind": "block"
+        },
+        {
+          "tagName": "@throws",
+          "syntaxKind": "block",
+          "allowMultiple": true
+        },
+        {
+          "tagName": "@typeParam",
+          "syntaxKind": "block",
+          "allowMultiple": true
+        },
+        {
+          "tagName": "@virtual",
+          "syntaxKind": "modifier"
+        },
+        {
+          "tagName": "@jsx",
+          "syntaxKind": "block"
+        },
+        {
+          "tagName": "@jsxRuntime",
+          "syntaxKind": "block"
+        },
+        {
+          "tagName": "@jsxFrag",
+          "syntaxKind": "block"
+        },
+        {
+          "tagName": "@jsxImportSource",
+          "syntaxKind": "block"
+        },
+        {
+          "tagName": "@betaDocumentation",
+          "syntaxKind": "modifier"
+        },
+        {
+          "tagName": "@internalRemarks",
+          "syntaxKind": "block"
+        },
+        {
+          "tagName": "@preapproved",
+          "syntaxKind": "modifier"
+        }
+      ],
+      "supportForTags": {
+        "@alpha": true,
+        "@beta": true,
+        "@defaultValue": true,
+        "@decorator": true,
+        "@deprecated": true,
+        "@eventProperty": true,
+        "@example": true,
+        "@experimental": true,
+        "@inheritDoc": true,
+        "@internal": true,
+        "@label": true,
+        "@link": true,
+        "@override": true,
+        "@packageDocumentation": true,
+        "@param": true,
+        "@privateRemarks": true,
+        "@public": true,
+        "@readonly": true,
+        "@remarks": true,
+        "@returns": true,
+        "@sealed": true,
+        "@see": true,
+        "@throws": true,
+        "@typeParam": true,
+        "@virtual": true,
+        "@betaDocumentation": true,
+        "@internalRemarks": true,
+        "@preapproved": true
+      },
+      "reportUnsupportedHtmlElements": false
+    }
+  },
+  "kind": "Package",
+  "canonicalReference": "api-extractor-scenarios!",
+  "docComment": "",
+  "name": "api-extractor-scenarios",
+  "preserveMemberOrder": false,
+  "members": [
+    {
+      "kind": "EntryPoint",
+      "canonicalReference": "api-extractor-scenarios!",
+      "name": "",
+      "preserveMemberOrder": false,
+      "members": [
+        {
+          "kind": "Class",
+          "canonicalReference": "api-extractor-scenarios!Combiner:class",
+          "docComment": "/**\n * @public\n */\n",
+          "excerptTokens": [
+            {
+              "kind": "Content",
+              "text": "export declare class Combiner "
+            }
+          ],
+          "fileUrlPath": "src/omitNewlines/index.ts",
+          "releaseTag": "Public",
+          "isAbstract": false,
+          "name": "Combiner",
+          "preserveMemberOrder": false,
+          "members": [
+            {
+              "kind": "Method",
+              "canonicalReference": "api-extractor-scenarios!Combiner#betaMember:member(1)",
+              "docComment": "/**\n * @beta\n */\n",
+              "excerptTokens": [
+                {
+                  "kind": "Content",
+                  "text": "betaMember(x: "
+                },
+                {
+                  "kind": "Content",
+                  "text": "string"
+                },
+                {
+                  "kind": "Content",
+                  "text": ", y: "
+                },
+                {
+                  "kind": "Content",
+                  "text": "string"
+                },
+                {
+                  "kind": "Content",
+                  "text": "): "
+                },
+                {
+                  "kind": "Content",
+                  "text": "string"
+                },
+                {
+                  "kind": "Content",
+                  "text": ";"
+                }
+              ],
+              "isStatic": false,
+              "returnTypeTokenRange": {
+                "startIndex": 5,
+                "endIndex": 6
+              },
+              "releaseTag": "Beta",
+              "isProtected": false,
+              "overloadIndex": 1,
+              "parameters": [
+                {
+                  "parameterName": "x",
+                  "parameterTypeTokenRange": {
+                    "startIndex": 1,
+                    "endIndex": 2
+                  },
+                  "isOptional": false
+                },
+                {
+                  "parameterName": "y",
+                  "parameterTypeTokenRange": {
+                    "startIndex": 3,
+                    "endIndex": 4
+                  },
+                  "isOptional": false
+                }
+              ],
+              "isOptional": false,
+              "isAbstract": false,
+              "name": "betaMember"
+            },
+            {
+              "kind": "Method",
+              "canonicalReference": "api-extractor-scenarios!Combiner#publicMember:member(1)",
+              "docComment": "/**\n * @public\n */\n",
+              "excerptTokens": [
+                {
+                  "kind": "Content",
+                  "text": "publicMember(x: "
+                },
+                {
+                  "kind": "Content",
+                  "text": "number"
+                },
+                {
+                  "kind": "Content",
+                  "text": ", y: "
+                },
+                {
+                  "kind": "Content",
+                  "text": "number"
+                },
+                {
+                  "kind": "Content",
+                  "text": "): "
+                },
+                {
+                  "kind": "Content",
+                  "text": "number"
+                },
+                {
+                  "kind": "Content",
+                  "text": ";"
+                }
+              ],
+              "isStatic": false,
+              "returnTypeTokenRange": {
+                "startIndex": 5,
+                "endIndex": 6
+              },
+              "releaseTag": "Public",
+              "isProtected": false,
+              "overloadIndex": 1,
+              "parameters": [
+                {
+                  "parameterName": "x",
+                  "parameterTypeTokenRange": {
+                    "startIndex": 1,
+                    "endIndex": 2
+                  },
+                  "isOptional": false
+                },
+                {
+                  "parameterName": "y",
+                  "parameterTypeTokenRange": {
+                    "startIndex": 3,
+                    "endIndex": 4
+                  },
+                  "isOptional": false
+                }
+              ],
+              "isOptional": false,
+              "isAbstract": false,
+              "name": "publicMember"
+            }
+          ],
+          "implementsTokenRanges": []
+        }
+      ]
+    }
+  ]
+}

build-tests/api-extractor-scenarios/etc/omitNewlines/api-extractor-scenarios.api.md

@@ -0,0 +1,19 @@
+## API Report File for "api-extractor-scenarios"
+
+> Do not edit this file. It is a report generated by [API Extractor](https://api-extractor.com/).
+
+```ts
+
+// @public (undocumented)
+export class Combiner {
+    // @alpha (undocumented)
+    alphaMember(x: boolean, y: boolean): boolean;
+    // @beta (undocumented)
+    betaMember(x: string, y: string): string;
+    // (undocumented)
+    publicMember(x: number, y: number): number;
+}
+
+// (No @packageDocumentation comment for this package)
+
+```