prefer-at: Remove unsafe autofix for .slice with 1 argument (#2476)

Author: k-yle

docs/rules/prefer-at.md

@@ -28,7 +28,7 @@ const foo = array.slice(-1).pop();
 ```
 
 ```js
-const foo = array.slice(-5).shift();
+const foo = array.slice(-1).shift();
 ```
 
 ```js

rules/prefer-at.js

@@ -99,9 +99,12 @@ function checkSliceCall(node) {
 	const startIndex = -startIndexNode.argument.value;
 	if (sliceArgumentsLength === 1) {
 		if (
-			firstElementGetMethod === 'zero-index'
-			|| firstElementGetMethod === 'shift'
-			|| (startIndex === -1 && firstElementGetMethod === 'pop')
+			startIndexNode.argument.value === 1
+			&& (
+				firstElementGetMethod === 'zero-index'
+				|| firstElementGetMethod === 'shift'
+				|| (startIndex === -1 && firstElementGetMethod === 'pop')
+			)
 		) {
 			return {safeToFix: true, firstElementGetMethod};
 		}

test/prefer-at.js

@@ -93,14 +93,15 @@ test.snapshot({
 		'++ array.slice(-1)[0]',
 		'array.slice(-1)[0] --',
 		'delete array.slice(-1)[0]',
+
+		'array.slice(-9)[0]',
+		'array.slice(-9).shift()',
+		'array.slice(-0xA)[0b000]',
 	],
 	invalid: [
 		'array.slice(-1)[0]',
 		'array.slice(-1).pop()',
 		'array.slice(-1.0).shift()',
-		'array.slice(-9)[0]',
-		'array.slice(-0xA)[0b000]',
-		'array.slice(-9).shift()',
 		'array.slice(-1)[(( 0 ))];',
 		'array.slice(-(( 1 )))[0];',
 		'array.slice((( -1 )))[0];',

test/snapshots/prefer-at.js.md

@@ -652,70 +652,7 @@ Generated by [AVA](https://avajs.dev).
         |       ^^^^^ Prefer \`.at(…)\` over the first element from \`.slice(…)\`.␊
     `
 
-## invalid(4): array.slice(-9)[0]
-
-> Input
-
-    `␊
-      1 | array.slice(-9)[0]␊
-    `
-
-> Output
-
-    `␊
-      1 | array.at(-9)␊
-    `
-
-> Error 1/1
-
-    `␊
-    > 1 | array.slice(-9)[0]␊
-        |       ^^^^^ Prefer \`.at(…)\` over the first element from \`.slice(…)\`.␊
-    `
-
-## invalid(5): array.slice(-0xA)[0b000]
-
-> Input
-
-    `␊
-      1 | array.slice(-0xA)[0b000]␊
-    `
-
-> Output
-
-    `␊
-      1 | array.at(-0xA)␊
-    `
-
-> Error 1/1
-
-    `␊
-    > 1 | array.slice(-0xA)[0b000]␊
-        |       ^^^^^ Prefer \`.at(…)\` over the first element from \`.slice(…)\`.␊
-    `
-
-## invalid(6): array.slice(-9).shift()
-
-> Input
-
-    `␊
-      1 | array.slice(-9).shift()␊
-    `
-
-> Output
-
-    `␊
-      1 | array.at(-9)␊
-    `
-
-> Error 1/1
-
-    `␊
-    > 1 | array.slice(-9).shift()␊
-        |       ^^^^^ Prefer \`.at(…)\` over the first element from \`.slice(…)\`.␊
-    `
-
-## invalid(7): array.slice(-1)[(( 0 ))];
+## invalid(4): array.slice(-1)[(( 0 ))];
 
 > Input
 
@@ -736,7 +673,7 @@ Generated by [AVA](https://avajs.dev).
         |       ^^^^^ Prefer \`.at(…)\` over the first element from \`.slice(…)\`.␊
     `
 
-## invalid(8): array.slice(-(( 1 )))[0];
+## invalid(5): array.slice(-(( 1 )))[0];
 
 > Input
 
@@ -757,7 +694,7 @@ Generated by [AVA](https://avajs.dev).
         |       ^^^^^ Prefer \`.at(…)\` over the first element from \`.slice(…)\`.␊
     `
 
-## invalid(9): array.slice((( -1 )))[0];
+## invalid(6): array.slice((( -1 )))[0];
 
 > Input
 
@@ -778,7 +715,7 @@ Generated by [AVA](https://avajs.dev).
         |       ^^^^^ Prefer \`.at(…)\` over the first element from \`.slice(…)\`.␊
     `
 
-## invalid(10): (( array.slice(-1) ))[0];
+## invalid(7): (( array.slice(-1) ))[0];
 
 > Input
 
@@ -799,7 +736,7 @@ Generated by [AVA](https://avajs.dev).
         |          ^^^^^ Prefer \`.at(…)\` over the first element from \`.slice(…)\`.␊
     `
 
-## invalid(11): (( array )).slice(-1)[0];
+## invalid(8): (( array )).slice(-1)[0];
 
 > Input
 
@@ -820,7 +757,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^ Prefer \`.at(…)\` over the first element from \`.slice(…)\`.␊
     `
 
-## invalid(12): (( array.slice(-1)[0] ));
+## invalid(9): (( array.slice(-1)[0] ));
 
 > Input
 
@@ -841,7 +778,7 @@ Generated by [AVA](https://avajs.dev).
         |          ^^^^^ Prefer \`.at(…)\` over the first element from \`.slice(…)\`.␊
     `
 
-## invalid(13): (( array.slice(-1) )).pop();
+## invalid(10): (( array.slice(-1) )).pop();
 
 > Input
 
@@ -862,7 +799,7 @@ Generated by [AVA](https://avajs.dev).
         |          ^^^^^ Prefer \`.at(…)\` over the first element from \`.slice(…)\`.␊
     `
 
-## invalid(14): (( array.slice(-1).pop ))();
+## invalid(11): (( array.slice(-1).pop ))();
 
 > Input
 
@@ -883,7 +820,7 @@ Generated by [AVA](https://avajs.dev).
         |          ^^^^^ Prefer \`.at(…)\` over the first element from \`.slice(…)\`.␊
     `
 
-## invalid(15): (( array.slice(-1).pop() ));
+## invalid(12): (( array.slice(-1).pop() ));
 
 > Input
 
@@ -904,7 +841,7 @@ Generated by [AVA](https://avajs.dev).
         |          ^^^^^ Prefer \`.at(…)\` over the first element from \`.slice(…)\`.␊
     `
 
-## invalid(16): array.slice(-1)[0].pop().shift().slice(-1)
+## invalid(13): array.slice(-1)[0].pop().shift().slice(-1)
 
 > Input