diff --git a/src/core.ts b/src/core.ts
index c423bc4295..cfdc00a928 100644
--- a/src/core.ts
+++ b/src/core.ts
@@ -515,6 +515,18 @@ export class ProcessOutput extends Error {
     return this._combined
   }
 
+  json() {
+    return JSON.parse(this._combined)
+  }
+
+  buffer() {
+    return Buffer.from(this._combined, 'utf8')
+  }
+
+  text() {
+    return this._combined
+  }
+
   valueOf() {
     return this._combined.trim()
   }
diff --git a/test/core.test.js b/test/core.test.js
index e28fa6c42a..c9be502b09 100644
--- a/test/core.test.js
+++ b/test/core.test.js
@@ -226,6 +226,21 @@ describe('core', () => {
     assert.equal((await p).toString(), 'foo\n')
   })
 
+  test('ProcessPromise: implements json()', async () => {
+    const p = $`echo '{"key":"value"}'`
+    assert.deepEqual((await p).json(), { key: 'value' })
+  })
+
+  test('ProcessPromise: implements text()', async () => {
+    const p = $`echo foo`
+    assert.equal((await p).toString(), 'foo\n')
+  })
+
+  test('ProcessPromise: implements buffer()', async () => {
+    const p = $`echo foo`
+    assert.equal((await p).buffer().compare(Buffer.from('foo\n', 'utf-8')), 0)
+  })
+
   test('ProcessPromise: implements valueOf()', async () => {
     const p = $`echo foo`
     assert.equal((await p).valueOf(), 'foo')