perf: remove redundant promise API overrides (#956)

Author: antongolub

src/core.ts

@@ -192,6 +192,25 @@ export const $: Shell & Options = new Proxy<Shell & Options>(
 
 type Resolve = (out: ProcessOutput) => void
 
+export interface ProcessPromise extends Promise<ProcessOutput> {
+  then<R = ProcessOutput, E = ProcessOutput>(
+    onfulfilled?:
+      | ((value: ProcessOutput) => PromiseLike<R> | R)
+      | undefined
+      | null,
+    onrejected?:
+      | ((reason: ProcessOutput) => PromiseLike<E> | E)
+      | undefined
+      | null
+  ): Promise<R | E>
+  catch<T = ProcessOutput>(
+    onrejected?:
+      | ((reason: ProcessOutput) => PromiseLike<T> | T)
+      | undefined
+      | null
+  ): Promise<ProcessOutput | T>
+}
+
 export class ProcessPromise extends Promise<ProcessOutput> {
   private _command = ''
   private _from = ''
@@ -520,32 +539,6 @@ export class ProcessPromise extends Promise<ProcessOutput> {
     return this._nothrow ?? this._snapshot.nothrow
   }
 
-  // Promise API
-  then<R = ProcessOutput, E = ProcessOutput>(
-    onfulfilled?:
-      | ((value: ProcessOutput) => PromiseLike<R> | R)
-      | undefined
-      | null,
-    onrejected?:
-      | ((reason: ProcessOutput) => PromiseLike<E> | E)
-      | undefined
-      | null
-  ): Promise<R | E> {
-    if (this.isHalted() && !this.child) {
-      throw new Error('The process is halted!')
-    }
-    return super.then(onfulfilled, onrejected)
-  }
-
-  catch<T = ProcessOutput>(
-    onrejected?:
-      | ((reason: ProcessOutput) => PromiseLike<T> | T)
-      | undefined
-      | null
-  ): Promise<ProcessOutput | T> {
-    return super.catch(onrejected)
-  }
-
   // Stream-like API
   private writable = true
   private emit(event: string, ...args: any[]) {

test/core.test.js

@@ -633,18 +633,6 @@ describe('core', () => {
           assert.ok(fs.existsSync(filepath), 'The cmd should have been called')
         })
 
-        test('await on halted throws', async () => {
-          const p = $({ halt: true })`sleep 1`
-          let ok = true
-          try {
-            await p
-            ok = false
-          } catch (err) {
-            assert.equal(err.message, 'The process is halted!')
-          }
-          assert.ok(ok, 'Expected failure!')
-        })
-
         test('sync process ignores halt option', () => {
           const p = $.sync({ halt: true })`echo foo`
           assert.equal(p.stdout, 'foo\n')