Commit 20359d2

@@ -60,9 +60,11 @@ export interface Shell<S = false, R = S extends true ? ProcessOutput : ProcessPr
 export declare const $: Shell & Options;
 type ProcessStage = 'initial' | 'halted' | 'running' | 'fulfilled' | 'rejected';
 type Resolve = (out: ProcessOutput) => void;
+type PromisifiedStream<D extends Writable> = D & PromiseLike<ProcessOutput & D>;
 type PipeMethod = {
     (dest: TemplateStringsArray, ...args: any[]): ProcessPromise;
-    <D extends Writable>(dest: D): D & PromiseLike<ProcessOutput & D>;
+    (file: string): PromisifiedStream<Writable>;
+    <D extends Writable>(dest: D): PromisifiedStream<D>;
     <D extends ProcessPromise>(dest: D): D;
 };
 export declare class ProcessPromise extends Promise<ProcessOutput> {

@@ -219,10 +219,13 @@ type ProcessStage = 'initial' | 'halted' | 'running' | 'fulfilled' | 'rejected'
 
 type Resolve = (out: ProcessOutput) => void
 
+type PromisifiedStream<D extends Writable> = D & PromiseLike<ProcessOutput & D>
+
 type PipeDest = Writable | ProcessPromise | TemplateStringsArray | string
 type PipeMethod = {
   (dest: TemplateStringsArray, ...args: any[]): ProcessPromise
-  <D extends Writable>(dest: D): D & PromiseLike<ProcessOutput & D>
+  (file: string): PromisifiedStream<Writable>
+  <D extends Writable>(dest: D): PromisifiedStream<D>
   <D extends ProcessPromise>(dest: D): D
 }
 
@@ -378,7 +381,7 @@ export class ProcessPromise extends Promise<ProcessOutput> {
     source: keyof TSpawnStore,
     dest: PipeDest,
     ...args: any[]
-  ): (Writable & PromiseLike<ProcessPromise & Writable>) | ProcessPromise {
+  ): PromisifiedStream<Writable> | ProcessPromise {
     if (isStringLiteral(dest, ...args))
       return this.pipe[source](
         $({
@@ -426,7 +429,7 @@ export class ProcessPromise extends Promise<ProcessOutput> {
     from.once('end', () => dest.emit('end-piped-from')).pipe(dest)
     fillEnd()
     return promisifyStream(dest, this) as Writable &
-      PromiseLike<ProcessPromise & Writable>
+      PromiseLike<ProcessOutput & Writable>
   }
 
   abort(reason?: string) {

@@ -27,6 +27,7 @@ expectType<ProcessPromise>(p.nothrow())
 expectType<ProcessPromise>(p.quiet())
 expectType<ProcessPromise>(p.pipe($`cmd`))
 expectType<ProcessPromise>(p.pipe`cmd`)
+expectType<Writable & PromiseLike<ProcessOutput & Writable>>(p.pipe('file'))
 expectType<
   typeof process.stdout & PromiseLike<ProcessOutput & typeof process.stdout>
 >(p.pipe(process.stdout))

@@ -17,7 +17,7 @@
       "README.md",
       "LICENSE"
     ],
-    "limit": "121.7 kB",
+    "limit": "121.8 kB",
     "brotli": false,
     "gzip": false
   },
@@ -31,21 +31,21 @@
   {
     "name": "libdefs",
     "path": "build/*.d.ts",
-    "limit": "40.00 kB",
+    "limit": "40.2 kB",
     "brotli": false,
     "gzip": false
   },
   {
     "name": "vendor",
     "path": "build/vendor-*",
-    "limit": "769.10 kB",
+    "limit": "769.1 kB",
     "brotli": false,
     "gzip": false
   },
   {
     "name": "all",
     "path": ["build/*", "man/*", "README.md", "LICENSE"],
-    "limit": "872.50 kB",
+    "limit": "872.6 kB",
     "brotli": false,
     "gzip": false
   }