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

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-colon-from-type-checker](#remove-useless-colon-from-type-checker)
 - ✅ [remove-useless-tuples-from-type-checker](#remove-useless-tuples-from-type-checker)
 
 ## Config
@@ -55,6 +56,7 @@ 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-colon-from-type-checker": "on",
         "printer/remove-useless-tuples-from-type-checker": "on"
     }
 }
@@ -270,6 +272,28 @@ export const beforeIf = createTypeChecker([
 ]);
 ```
 
+## remove-useless-colon-from-type-checker
+
+Checkout in 🐊[**Putout Editor**](https://putout.cloudcmd.io/#/gist/49a35399bd43d56bfd0221b3a0ace3b0/3ff3bdc8cb5f2a06786e9b616252d1b5f506dd73).
+
+### ❌ Example of incorrect code
+
+```js
+export const beforeIf = createTypeChecker([
+    ['+:', isInsideArray],
+    ['-:', isCoupleLines],
+]);
+```
+
+### ✅ Example of correct code
+
+```js
+export const beforeIf = createTypeChecker([
+    ['+', isInsideArray],
+    ['-', isCoupleLines],
+]);
+```
+
 ## remove-useless-tuples-from-type-checker
 
 Checkout in 🐊[**Putout Editor**](https://putout.cloudcmd.io/#/gist/f53f386b607115e0a96f7e294e34761e/cefd72aba4fcade59bbf8faa59739bac5c2fe057).

packages/plugin-printer/lib/index.js

@@ -1,3 +1,4 @@
+import * as removeUselessColonFromTypeChecker from './remove-useless-colon-from-type-checker/index.js';
 import * as addMissingColonToTypeChecker from './add-missing-colon-to-type-checker/index.js';
 import * as mergeTuplesOfTypeCheckers from './merge-tuples-of-type-checkers/index.js';
 import * as checkIfSuccessPossibleInTypeChecker from './check-if-success-possible-in-type-checker/index.js';
@@ -38,4 +39,5 @@ export const rules = {
     'check-if-success-possible-in-type-checker': checkIfSuccessPossibleInTypeChecker,
     'merge-tuples-of-type-checkers': mergeTuplesOfTypeCheckers,
     'add-missing-colon-to-type-checker': addMissingColonToTypeChecker,
+    'remove-useless-colon-from-type-checker': removeUselessColonFromTypeChecker,
 };

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

@@ -0,0 +1,9 @@
+export const beforeIf = createTypeChecker([
+    ['+', isInsideArray],
+    ['-', isCoupleLines],
+]);
+
+export const x = create([
+    ['+ -> !', isInsideArray],
+    ['- parentPath ->', isCoupleLines],
+]);

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

@@ -0,0 +1,9 @@
+export const beforeIf = createTypeChecker([
+    ['+:', isInsideArray],
+    ['-:', isCoupleLines],
+]);
+
+export const x = create([
+    ['+ -> !', isInsideArray],
+    ['- parentPath ->', isCoupleLines],
+]);

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

@@ -0,0 +1,65 @@
+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 colon: '${value}' -> '${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.length !== 2)
+        return where;
+    
+    if (value === '+:')
+        where.push('after-plus');
+    
+    if (value === '-:')
+        where.push('after-minus');
+    
+    return where;
+}
+
+function addColon(value, where) {
+    if (where.includes('after-plus'))
+        value = value.replace('+:', '+');
+    
+    if (where.includes('after-minus'))
+        value = value.replace('-:', '-');
+    
+    return value;
+}

packages/plugin-printer/lib/remove-useless-colon-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-colon-from-type-checker', plugin],
+    ],
+});
+
+test('printer: remove-useless-colon-from-type-checker: report', (t) => {
+    t.report('remove-useless-colon-from-type-checker', `Remove useless colon: '+:' -> '+'`);
+    t.end();
+});
+
+test('printer: remove-useless-colon-from-type-checker: transform', (t) => {
+    t.transform('remove-useless-colon-from-type-checker');
+    t.end();
+});

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

@@ -0,0 +1,9 @@
+export const beforeIf = createTypeChecker([
+    ['+', isInsideArray],
+    ['-', isCoupleLines],
+]);
+
+export const x = create([
+    ['+ -> !', isInsideArray],
+    ['- parentPath ->', isCoupleLines],
+]);

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

@@ -0,0 +1,9 @@
+export const beforeIf = createTypeChecker([
+    ['+:', isInsideArray],
+    ['-:', isCoupleLines],
+]);
+
+export const x = create([
+    ['+ -> !', isInsideArray],
+    ['- parentPath ->', isCoupleLines],
+]);

packages/plugin-printer/test/printer.js

@@ -101,3 +101,8 @@ test('plugin-printer: transform: add-missing-colon-to-type-checker', (t) => {
     t.transform('add-missing-colon-to-type-checker');
     t.end();
 });
+
+test('plugin-printer: transform: remove-useless-colon-from-type-checker', (t) => {
+    t.transform('remove-useless-colon-from-type-checker');
+    t.end();
+});