Switch to use `@types` for pump

build/lib/typings/pump.d.ts

-declare module 'pump' {
-	function f(
-		str1:NodeJS.WritableStream,
-		str2:NodeJS.WritableStream,
-		str3:NodeJS.WritableStream,
-		str4:NodeJS.WritableStream,
-		str5:NodeJS.WritableStream,
-		str6:NodeJS.WritableStream,
-		str7:NodeJS.WritableStream,
-		str8:NodeJS.WritableStream,
-		str9:NodeJS.WritableStream,
-		str10:NodeJS.WritableStream,
-		cb:(err:any)=>void
-	): NodeJS.WritableStream;
-
-	/**
-	 * This is required as per:
-	 * https://github.com/Microsoft/TypeScript/issues/5073
-	 */
-	namespace f {}
-
-	export = f;
-}
\ No newline at end of file

build/package.json

@@ -19,6 +19,7 @@
     "@types/mime": "0.0.29",
     "@types/minimatch": "^2.0.29",
     "@types/node": "8.0.33",
+    "@types/pump": "^1.0.1",
     "@types/request": "^2.47.0",
     "@types/rimraf": "^2.0.2",
     "@types/through": "^0.0.29",

build/yarn.lock

@@ -168,6 +168,13 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-8.0.33.tgz#1126e94374014e54478092830704f6ea89df04cd"
   integrity sha512-vmCdO8Bm1ExT+FWfC9sd9r4jwqM7o97gGy2WBshkkXbf/2nLAJQUrZfIhw27yVOtLUev6kSZc4cav/46KbDd8A==
 
+"@types/pump@^1.0.1":
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/@types/pump/-/pump-1.0.1.tgz#ae8157cefef04d1a4d24c1cc91d403c2f5da5cd0"
+  integrity sha1-roFXzv7wTRpNJMHMkdQDwvXaXNA=
+  dependencies:
+    "@types/node" "*"
+
 "@types/request@^2.47.0":
   version "2.47.0"
   resolved "https://registry.yarnpkg.com/@types/request/-/request-2.47.0.tgz#76a666cee4cb85dcffea6cd4645227926d9e114e"