autoprefixer: updated to match postcss Plugin types for postcss 7.x (#29357)

* autoprefixer: updated to match postcss Plugin types for postcss 7.x types, resolve error with Transformer type

* #29357: Renamed autoprefixer.AutoprefixerOptions to autoprefixer.Options

types/autoprefixer/autoprefixer-tests.ts

@@ -1,17 +1,17 @@
-import * as autopref from 'autoprefixer';
+import autoprefixer = require("autoprefixer");
+import { Transformer } from 'postcss';
 
-const ap: autopref.Transformer = autopref({
-	browsers: ['> 5%', 'last 2 versions'],
-	env: '',
-	cascade: true,
-	add: true,
-	remove: true,
-	supports: true,
-	flexbox: true,
-	grid: true,
-	stats: {},
+const ap1: Transformer = autoprefixer();
+
+const ap2: Transformer = autoprefixer({
+  browsers: [],
+  env: "test",
+  cascade: false,
+  add: false,
+  remove: false,
+  supports: false,
+  flexbox: false,
+  grid: false,
+  stats: {},
+  ignoreUnknownVersions: false,
 });
-const ap2: autopref.Transformer = autopref({
-	flexbox: 'no-2009',
-});
-const info: string = ap.info();

types/autoprefixer/index.d.ts

@@ -1,9 +1,9 @@
-// Type definitions for autoprefixer 6.7
+// Type definitions for autoprefixer 9.1
 // Project: https://github.com/postcss/autoprefixer
-// Definitions by: Armando Meziat <https://github.com/odnamrataizem>
+// Definitions by:  Armando Meziat <https://github.com/odnamrataizem>, murt <https://github.com/murt>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
-import { Plugin, Transformer as PostcssTransformer } from 'postcss';
+import { Plugin } from "postcss";
 
 declare namespace autoprefixer {
     interface Options {
@@ -16,15 +16,10 @@ declare namespace autoprefixer {
         flexbox?: boolean | 'no-2009';
         grid?: boolean;
         stats?: any;
+        ignoreUnknownVersions?: boolean;
     }
 
-    interface Transformer extends PostcssTransformer {
-        info(): string;
-    }
-
-    interface Autoprefixer extends Plugin<Options> {
-        (opts?: Options): Transformer;
-    }
+    type Autoprefixer = Plugin<Options>;
 }
 
 declare const autoprefixer: autoprefixer.Autoprefixer;

types/autoprefixer/package.json

@@ -1,6 +1,6 @@
 {
     "private": true,
     "dependencies": {
-        "postcss": "^5.2.15"
+        "postcss": "7.x.x"
     }
 }