Support Float16Array (#2622)

Author: fisker

docs/rules/new-for-builtins.md

@@ -19,6 +19,7 @@ Enforces the use of `new` for following builtins:
 - [`DataView`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView)
 - [`Date`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date)
 - [`Error`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error)
+- [`Float16Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float16Array)
 - [`Float32Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float32Array)
 - [`Float64Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float64Array)
 - [`Function`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function)

rules/shared/typed-array.js

@@ -7,6 +7,7 @@ const typedArrayTypes = [
 	'Uint16Array',
 	'Int32Array',
 	'Uint32Array',
+	'Float16Array',
 	'Float32Array',
 	'Float64Array',
 	'BigInt64Array',

test/new-for-builtins.js

@@ -14,6 +14,7 @@ test.snapshot({
 		'const foo = new BigUint64Array()',
 		'const foo = new DataView()',
 		'const foo = new Error()',
+		'const foo = new Float16Array()',
 		'const foo = new Float32Array()',
 		'const foo = new Float64Array()',
 		'const foo = new Function()',
@@ -206,6 +207,7 @@ test.snapshot({
 		'const foo = DataView()',
 		'const foo = Error()',
 		'const foo = Error(\'Foo bar\')',
+		'const foo = Float16Array()',
 		'const foo = Float32Array()',
 		'const foo = Float64Array()',
 		'const foo = Function()',

test/no-instanceof-builtins.js

@@ -42,6 +42,7 @@ const strictStrategyInvalid = [
 	'foo instanceof Uint16Array',
 	'foo instanceof Int32Array',
 	'foo instanceof Uint32Array',
+	'foo instanceof Float16Array',
 	'foo instanceof Float32Array',
 	'foo instanceof Float64Array',
 	'foo instanceof BigInt64Array',

test/prefer-negative-index.js

@@ -226,6 +226,8 @@ test({
 				Int32Array.prototype.splice.call(foo, foo.length - 1, foo.length - 2, foo.length - 3);
 				Uint32Array.prototype.slice.call(foo, foo.length - 1, foo.length - 2, foo.length - 3);
 				Uint32Array.prototype.splice.call(foo, foo.length - 1, foo.length - 2, foo.length - 3);
+				Float16Array.prototype.slice.call(foo, foo.length - 1, foo.length - 2, foo.length - 3);
+				Float16Array.prototype.splice.call(foo, foo.length - 1, foo.length - 2, foo.length - 3);
 				Float32Array.prototype.slice.call(foo, foo.length - 1, foo.length - 2, foo.length - 3);
 				Float32Array.prototype.splice.call(foo, foo.length - 1, foo.length - 2, foo.length - 3);
 				Float64Array.prototype.slice.call(foo, foo.length - 1, foo.length - 2, foo.length - 3);
@@ -237,7 +239,7 @@ test({
 				NOT_SUPPORTED.prototype.slice.call(foo, foo.length - 1, foo.length - 2, foo.length - 3);
 				NOT_SUPPORTED.prototype.splice.call(foo, foo.length - 1, foo.length - 2, foo.length - 3);
 			`,
-			errors: Array.from({length: 15}, () => error),
+			errors: Array.from({length: 16}, () => error),
 			output: outdent`
 				Array.prototype.slice.call(foo, - 1, - 2, foo.length - 3);
 				Array.prototype.splice.call(foo, - 1, foo.length - 2, foo.length - 3);
@@ -259,6 +261,8 @@ test({
 				Int32Array.prototype.splice.call(foo, foo.length - 1, foo.length - 2, foo.length - 3);
 				Uint32Array.prototype.slice.call(foo, - 1, - 2, foo.length - 3);
 				Uint32Array.prototype.splice.call(foo, foo.length - 1, foo.length - 2, foo.length - 3);
+				Float16Array.prototype.slice.call(foo, - 1, - 2, foo.length - 3);
+				Float16Array.prototype.splice.call(foo, foo.length - 1, foo.length - 2, foo.length - 3);
 				Float32Array.prototype.slice.call(foo, - 1, - 2, foo.length - 3);
 				Float32Array.prototype.splice.call(foo, foo.length - 1, foo.length - 2, foo.length - 3);
 				Float64Array.prototype.slice.call(foo, - 1, - 2, foo.length - 3);
@@ -295,6 +299,8 @@ test({
 				Int32Array.prototype.splice.apply(foo, [foo.length - 1, foo.length - 2, foo.length - 3]);
 				Uint32Array.prototype.slice.apply(foo, [foo.length - 1, foo.length - 2, foo.length - 3]);
 				Uint32Array.prototype.splice.apply(foo, [foo.length - 1, foo.length - 2, foo.length - 3]);
+				Float16Array.prototype.slice.apply(foo, [foo.length - 1, foo.length - 2, foo.length - 3]);
+				Float16Array.prototype.splice.apply(foo, [foo.length - 1, foo.length - 2, foo.length - 3]);
 				Float32Array.prototype.slice.apply(foo, [foo.length - 1, foo.length - 2, foo.length - 3]);
 				Float32Array.prototype.splice.apply(foo, [foo.length - 1, foo.length - 2, foo.length - 3]);
 				Float64Array.prototype.slice.apply(foo, [foo.length - 1, foo.length - 2, foo.length - 3]);
@@ -306,7 +312,7 @@ test({
 				NOT_SUPPORTED.prototype.slice.apply(foo, [foo.length - 1, foo.length - 2, foo.length - 3]);
 				NOT_SUPPORTED.prototype.splice.apply(foo, [foo.length - 1, foo.length - 2, foo.length - 3]);
 			`,
-			errors: Array.from({length: 15}, () => error),
+			errors: Array.from({length: 16}, () => error),
 			output: outdent`
 				Array.prototype.slice.apply(foo, [- 1, - 2, foo.length - 3]);
 				Array.prototype.splice.apply(foo, [- 1, foo.length - 2, foo.length - 3]);
@@ -328,6 +334,8 @@ test({
 				Int32Array.prototype.splice.apply(foo, [foo.length - 1, foo.length - 2, foo.length - 3]);
 				Uint32Array.prototype.slice.apply(foo, [- 1, - 2, foo.length - 3]);
 				Uint32Array.prototype.splice.apply(foo, [foo.length - 1, foo.length - 2, foo.length - 3]);
+				Float16Array.prototype.slice.apply(foo, [- 1, - 2, foo.length - 3]);
+				Float16Array.prototype.splice.apply(foo, [foo.length - 1, foo.length - 2, foo.length - 3]);
 				Float32Array.prototype.slice.apply(foo, [- 1, - 2, foo.length - 3]);
 				Float32Array.prototype.splice.apply(foo, [foo.length - 1, foo.length - 2, foo.length - 3]);
 				Float64Array.prototype.slice.apply(foo, [- 1, - 2, foo.length - 3]);

test/prefer-spread.js

@@ -16,6 +16,7 @@ test.snapshot({
 		'Uint16Array.from(set);',
 		'Int32Array.from(set);',
 		'Uint32Array.from(set);',
+		'Float16Array.from(set);',
 		'Float32Array.from(set);',
 		'Float64Array.from(set);',
 		'BigInt64Array.from(set);',

test/snapshots/new-for-builtins.js.md

@@ -782,7 +782,28 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^^^^^^ Use \`new Error()\` instead of \`Error()\`.␊
     `
 
-## invalid(35): const foo = Float32Array()
+## invalid(35): const foo = Float16Array()
+
+> Input
+
+    `␊
+      1 | const foo = Float16Array()␊
+    `
+
+> Output
+
+    `␊
+      1 | const foo = new Float16Array()␊
+    `
+
+> Error 1/1
+
+    `␊
+    > 1 | const foo = Float16Array()␊
+        |             ^^^^^^^^^^^^^^ Use \`new Float16Array()\` instead of \`Float16Array()\`.␊
+    `
+
+## invalid(36): const foo = Float32Array()
 
 > Input
 
@@ -803,7 +824,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^^^^ Use \`new Float32Array()\` instead of \`Float32Array()\`.␊
     `
 
-## invalid(36): const foo = Float64Array()
+## invalid(37): const foo = Float64Array()
 
 > Input
 
@@ -824,7 +845,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^^^^ Use \`new Float64Array()\` instead of \`Float64Array()\`.␊
     `
 
-## invalid(37): const foo = Function()
+## invalid(38): const foo = Function()
 
 > Input
 
@@ -845,7 +866,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^ Use \`new Function()\` instead of \`Function()\`.␊
     `
 
-## invalid(38): const foo = Int8Array()
+## invalid(39): const foo = Int8Array()
 
 > Input
 
@@ -866,7 +887,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^ Use \`new Int8Array()\` instead of \`Int8Array()\`.␊
     `
 
-## invalid(39): const foo = Int16Array()
+## invalid(40): const foo = Int16Array()
 
 > Input
 
@@ -887,7 +908,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^^ Use \`new Int16Array()\` instead of \`Int16Array()\`.␊
     `
 
-## invalid(40): const foo = Int32Array()
+## invalid(41): const foo = Int32Array()
 
 > Input
 
@@ -908,7 +929,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^^ Use \`new Int32Array()\` instead of \`Int32Array()\`.␊
     `
 
-## invalid(41): const foo = (( Map ))()
+## invalid(42): const foo = (( Map ))()
 
 > Input
 
@@ -929,7 +950,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^ Use \`new Map()\` instead of \`Map()\`.␊
     `
 
-## invalid(42): const foo = Map([['foo', 'bar'], ['unicorn', 'rainbow']])
+## invalid(43): const foo = Map([['foo', 'bar'], ['unicorn', 'rainbow']])
 
 > Input
 
@@ -950,7 +971,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Use \`new Map()\` instead of \`Map()\`.␊
     `
 
-## invalid(43): const foo = WeakMap()
+## invalid(44): const foo = WeakMap()
 
 > Input
 
@@ -971,7 +992,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^ Use \`new WeakMap()\` instead of \`WeakMap()\`.␊
     `
 
-## invalid(44): const foo = Set()
+## invalid(45): const foo = Set()
 
 > Input
 
@@ -992,7 +1013,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^ Use \`new Set()\` instead of \`Set()\`.␊
     `
 
-## invalid(45): const foo = WeakSet()
+## invalid(46): const foo = WeakSet()
 
 > Input
 
@@ -1013,7 +1034,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^ Use \`new WeakSet()\` instead of \`WeakSet()\`.␊
     `
 
-## invalid(46): const foo = Promise()
+## invalid(47): const foo = Promise()
 
 > Input
 
@@ -1034,7 +1055,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^ Use \`new Promise()\` instead of \`Promise()\`.␊
     `
 
-## invalid(47): const foo = RegExp()
+## invalid(48): const foo = RegExp()
 
 > Input
 
@@ -1055,7 +1076,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^ Use \`new RegExp()\` instead of \`RegExp()\`.␊
     `
 
-## invalid(48): const foo = Uint8Array()
+## invalid(49): const foo = Uint8Array()
 
 > Input
 
@@ -1076,7 +1097,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^^ Use \`new Uint8Array()\` instead of \`Uint8Array()\`.␊
     `
 
-## invalid(49): const foo = Uint16Array()
+## invalid(50): const foo = Uint16Array()
 
 > Input
 
@@ -1097,7 +1118,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^^^ Use \`new Uint16Array()\` instead of \`Uint16Array()\`.␊
     `
 
-## invalid(50): const foo = Uint32Array()
+## invalid(51): const foo = Uint32Array()
 
 > Input
 
@@ -1118,7 +1139,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^^^ Use \`new Uint32Array()\` instead of \`Uint32Array()\`.␊
     `
 
-## invalid(51): const foo = Uint8ClampedArray()
+## invalid(52): const foo = Uint8ClampedArray()
 
 > Input
 
@@ -1139,7 +1160,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^^^^^^^^^ Use \`new Uint8ClampedArray()\` instead of \`Uint8ClampedArray()\`.␊
     `
 
-## invalid(52): const foo = new BigInt(123)
+## invalid(53): const foo = new BigInt(123)
 
 > Input
 
@@ -1160,7 +1181,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^^^^^ Use \`BigInt()\` instead of \`new BigInt()\`.␊
     `
 
-## invalid(53): const foo = new Boolean()
+## invalid(54): const foo = new Boolean()
 
 > Input
 
@@ -1175,7 +1196,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^^^ Use \`Boolean()\` instead of \`new Boolean()\`.␊
     `
 
-## invalid(54): const foo = new Number()
+## invalid(55): const foo = new Number()
 
 > Input
 
@@ -1190,7 +1211,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^^ Use \`Number()\` instead of \`new Number()\`.␊
     `
 
-## invalid(55): const foo = new Number('123')
+## invalid(56): const foo = new Number('123')
 
 > Input
 
@@ -1205,7 +1226,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^^^^^^^ Use \`Number()\` instead of \`new Number()\`.␊
     `
 
-## invalid(56): const foo = new String()
+## invalid(57): const foo = new String()
 
 > Input
 
@@ -1220,7 +1241,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^^ Use \`String()\` instead of \`new String()\`.␊
     `
 
-## invalid(57): const foo = new Symbol()
+## invalid(58): const foo = new Symbol()
 
 > Input
 
@@ -1241,7 +1262,7 @@ Generated by [AVA](https://avajs.dev).
         |             ^^^^^^^^^^^^ Use \`Symbol()\` instead of \`new Symbol()\`.␊
     `
 
-## invalid(58): function varCheck() { { var WeakMap = function() {}; } // This should not reported return WeakMap() } function constCheck() { { const Array = function() {}; } return Array() } function letCheck() { { let Map = function() {}; } return Map() }
+## invalid(59): function varCheck() { { var WeakMap = function() {}; } // This should not reported return WeakMap() } function constCheck() { { const Array = function() {}; } return Array() } function letCheck() { { let Map = function() {}; } return Map() }
 
 > Input
 
@@ -1341,7 +1362,7 @@ Generated by [AVA](https://avajs.dev).
       19 | }␊
     `
 
-## invalid(59): function foo() { return(globalThis).Map() }
+## invalid(60): function foo() { return(globalThis).Map() }
 
 > Input