41 lines
1.1 KiB
JavaScript
41 lines
1.1 KiB
JavaScript
|
/**
|
||
|
|
* Copyright (c) Meta Platforms, Inc. and affiliates.
|
||
|
|
*
|
||
|
|
* This source code is licensed under the MIT license found in the
|
||
|
|
* LICENSE file in the root directory of this source tree.
|
||
|
|
*
|
||
|
|
* @emails react-core
|
||
|
|
*/
|
||
|
|
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
module.exports = {
|
||
|
|
meta: {
|
||
|
|
schema: []
|
||
|
|
},
|
||
|
|
create(context) {
|
||
|
|
function report(node, name, msg) {
|
||
|
|
node |> context.report(%, `Do not use the ${name} constructor. ${msg}`);
|
||
|
|
}
|
||
|
|
function check(node) {
|
||
|
|
const name = node.callee.name;
|
||
|
|
switch (name) {
|
||
|
|
case 'Boolean':
|
||
|
|
report(node, name, 'To cast a value to a boolean, use double negation: !!value');
|
||
|
|
break;
|
||
|
|
case 'String':
|
||
|
|
if (node.type === 'NewExpression') {
|
||
|
|
node |> context.report(%, "Do not use `new String()`. Use String() without new (or '' + value for perf-sensitive code).");
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 'Number':
|
||
|
|
report(node, name, 'To cast a value to a number, use the plus operator: +value');
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return {
|
||
|
|
CallExpression: check,
|
||
|
|
NewExpression: check
|
||
|
|
};
|
||
|
|
}
|
||
|
|
};
|