feature: @putout/engine-processor: add support of 'lint()' export in processors

Author: coderaiser

packages/engine-processor/README.md

@@ -70,6 +70,23 @@ export const merge = (source, list) => {
 };
 ```
 
+Instead of `find` and `fix` you can use `lint`:
+
+```js
+export const files = [
+    '*.js',
+];
+
+export const lint = async (source, {fix}) => {
+    const [code, places] = await eslint(source, {fix});
+    return [code, places];
+};
+```
+
+## License
+
+MIT
+
 ## License
 
 MIT

packages/engine-processor/lib/processor.js

@@ -114,6 +114,7 @@ async function getFiles({name, fix, rawSource, processorRunners}) {
             find = stubFind,
             fix: fixFind = id,
             merge: runnersMerge = id,
+            lint,
         } = currentRunner;
 
         if (!isMatch(name))
@@ -123,7 +124,9 @@ async function getFiles({name, fix, rawSource, processorRunners}) {
 
         isProcessed = true;
 
-        if (fix)
+        if (lint)
+            [processedSource, processedPlaces] = await lint(rawSource, {fix});
+        else if (fix)
             processedSource = await fixFind(rawSource);
         else
             processedPlaces = await find(rawSource);