feature: @putout/plugin-printer: remove-useless-arrow-from-type-checker: add

Author: coderaiser

packages/plugin-printer/README.md

@@ -31,6 +31,7 @@ npm i @putout/plugin-printer -D
 - ✅ [remove-legacy-test-declaration](#remove-legacy-test-declaration);
 - ✅ [remove-trailing-spaces-from-type-checker](#remove-trailing-spaces-from-type-checker);
 - ✅ [remove-useless-spaces-from-type-checker](#remove-useless-spaces-from-type-checker);
+- ✅ [remove-useless-arrow-from-type-checker](#remove-useless-arrow-from-type-checker);
 - ✅ [remove-useless-colon-from-type-checker](#remove-useless-colon-from-type-checker);
 - ✅ [remove-useless-tuples-from-type-checker](#remove-useless-tuples-from-type-checker);
 - ✅ [remove-useless-not-from-type-checker](#remove-useless-not-from-type-checker);
@@ -59,6 +60,7 @@ npm i @putout/plugin-printer -D
         "printer/remove-useless-maybe": "on",
         "printer/remove-trailing-spaces-from-type-checker": "on",
         "printer/remove-useless-spaces-from-type-checker": "on",
+        "printer/remove-useless-arrow-from-type-checker": "on",
         "printer/remove-useless-colon-from-type-checker": "on",
         "printer/remove-useless-not-from-type-checker": "on",
         "printer/remove-useless-path-from-type-checker": "on",
@@ -278,6 +280,28 @@ export const beforeIf = createTypeChecker([
 ]);
 ```
 
+## remove-useless-arrow-from-type-checker
+
+Checkout in 🐊[**Putout Editor**](https://putout.cloudcmd.io/#/gist/c12c37b793192eadb60fac332d95cc3b/3f4aa557c65897f4967712f30e51c29483feddc8).
+
+### ❌ Example of incorrect code
+
+```js
+const isTwoLongStringsInsideArray = createTypeChecker([
+    ['-: -> !', isTwoLongStrings],
+    ['+: parentPath -> -> ArrayExpression'],
+]);
+```
+
+### ✅ Example of correct code
+
+```js
+const isTwoLongStringsInsideArray = createTypeChecker([
+    ['-: -> !', isTwoLongStrings],
+    ['+: parentPath -> ArrayExpression'],
+]);
+```
+
 ## remove-useless-colon-from-type-checker
 
 Checkout in 🐊[**Putout Editor**](https://putout.cloudcmd.io/#/gist/49a35399bd43d56bfd0221b3a0ace3b0/3ff3bdc8cb5f2a06786e9b616252d1b5f506dd73).

packages/plugin-printer/lib/index.js

@@ -1,3 +1,4 @@
+import * as removeUselessArrowFromTypeChecker from './remove-useless-arrow-from-type-checker/index.js';
 import * as removeUselessPathFromTypeChecker from './remove-useless-path-from-type-checker/index.js';
 import * as reverseComparisonInTypeChecker from './reverse-comparison-in-type-checker/index.js';
 import * as removeUselessNotFromTypeChecker from './remove-useless-not-from-type-checker/index.js';
@@ -46,4 +47,5 @@ export const rules = {
     'remove-useless-not-from-type-checker': removeUselessNotFromTypeChecker,
     'reverse-comparison-in-type-checker': reverseComparisonInTypeChecker,
     'remove-useless-path-from-type-checker': removeUselessPathFromTypeChecker,
+    'remove-useless-arrow-from-type-checker': removeUselessArrowFromTypeChecker,
 };

packages/plugin-printer/lib/remove-useless-arrow-from-type-checker/fixture/remove-useless-arrow-from-type-checker-fix.js

@@ -0,0 +1,4 @@
+const isTwoLongStringsInsideArray = createTypeChecker([
+    ['-: -> !', isTwoLongStrings],
+    ['+: parentPath -> ArrayExpression'],
+]);

packages/plugin-printer/lib/remove-useless-arrow-from-type-checker/fixture/remove-useless-arrow-from-type-checker.js

@@ -0,0 +1,4 @@
+const isTwoLongStringsInsideArray = createTypeChecker([
+    ['-: -> !', isTwoLongStrings],
+    ['+: parentPath -> -> ArrayExpression'],
+]);

packages/plugin-printer/lib/remove-useless-arrow-from-type-checker/index.js

@@ -0,0 +1,56 @@
+import {operator, types} from 'putout';
+
+const {
+    isIdentifier,
+    isCallExpression,
+} = types;
+
+const {setLiteralValue} = operator;
+
+export const report = ({path, where}) => {
+    const {value} = path.node;
+    const withSpaces = addColon(value, where);
+    
+    return `Remove useless arrow: '${value}' -> '${withSpaces}'`;
+};
+
+export const fix = ({path, where}) => {
+    const {value} = path.node;
+    setLiteralValue(path, addColon(value, where));
+};
+export const traverse = ({push}) => ({
+    StringLiteral(path) {
+        const call = path.find(isCallExpression);
+        
+        if (!call)
+            return;
+        
+        if (!isIdentifier(call.node.callee, {name: 'createTypeChecker'}))
+            return;
+        
+        const {value} = path.node;
+        const where = createWhere(value);
+        
+        if (where.length)
+            push({
+                path,
+                where,
+            });
+    },
+});
+
+function createWhere(value) {
+    const where = [];
+    
+    if (value.includes('-> ->'))
+        where.push('duplicate');
+    
+    return where;
+}
+
+function addColon(value, where) {
+    if (where.includes('duplicate'))
+        value = value.replace('-> ->', '->');
+    
+    return value;
+}

packages/plugin-printer/lib/remove-useless-arrow-from-type-checker/index.spec.js

@@ -0,0 +1,18 @@
+import {createTest} from '@putout/test';
+import * as plugin from './index.js';
+
+const test = createTest(import.meta.url, {
+    plugins: [
+        ['remove-useless-arrow-from-type-checker', plugin],
+    ],
+});
+
+test('printer: remove-useless-arrow-from-type-checker: report', (t) => {
+    t.report('remove-useless-arrow-from-type-checker', `Remove useless arrow: '+: parentPath -> -> ArrayExpression' -> '+: parentPath -> ArrayExpression'`);
+    t.end();
+});
+
+test('printer: remove-useless-arrow-from-type-checker: transform', (t) => {
+    t.transform('remove-useless-arrow-from-type-checker');
+    t.end();
+});

packages/plugin-printer/test/fixture/remove-useless-arrow-from-type-checker-fix.js

@@ -0,0 +1,4 @@
+const isTwoLongStringsInsideArray = createTypeChecker([
+    ['-: -> !', isTwoLongStrings],
+    ['+: parentPath -> ArrayExpression'],
+]);

packages/plugin-printer/test/fixture/remove-useless-arrow-from-type-checker.js

@@ -0,0 +1,4 @@
+const isTwoLongStringsInsideArray = createTypeChecker([
+    ['-: -> !', isTwoLongStrings],
+    ['+: parentPath -> -> ArrayExpression'],
+]);

packages/plugin-printer/test/printer.js

@@ -121,3 +121,8 @@ test('plugin-printer: transform: remove-useless-path-from-type-checker', (t) =>
     t.transform('remove-useless-path-from-type-checker');
     t.end();
 });
+
+test('plugin-printer: transform: remove-useless-arrow-from-type-checker', (t) => {
+    t.transform('remove-useless-arrow-from-type-checker');
+    t.end();
+});