Type corrections after updating TypeScript definitions

Author: JamesMessinger

src/fs.ts

@@ -18,7 +18,7 @@ interface JsonFile {
   path: string;
   data: unknown;
   indent: string;
-  newline: string | null;
+  newline: string | undefined;
 }
 
 /**

src/get-new-version.ts

@@ -46,6 +46,7 @@ function getNextVersion(oldVersion: string, bump: BumpRelease): string {
     // This is a special case when going from a non-prerelease version to a prerelease version.
     // SemVer sets the prerelease version to zero (e.g. "1.23.456" => "1.23.456-beta.0").
     // But the user probably expected it to be "1.23.456-beta.1" instead.
+    // @ts-ignore
     newSemVer.prerelease[1] = "1";
     newSemVer.format();
   }

src/manifest.ts

@@ -34,7 +34,7 @@ export function isManifest(obj: any): obj is Manifest {
 /**
  * Determines whether the specified value is a string, null, or undefined.
  */
-function isOptionalString(value: any): value is string | null | undefined {
+function isOptionalString(value: any): value is string | undefined {
   let type = typeof value;
   return value === null ||
     type === "undefined" ||

src/normalize-options.ts

@@ -1,3 +1,4 @@
+// tslint:disable-next-line: match-default-export-name
 import globby, { hasMagic } from "globby";
 import { isReleaseType, ReleaseType } from "./release-type";
 import { VersionBumpOptions } from "./types/version-bump-options";