@stylistic/eslint-plugin-js
Version:
JavaScript stylistic rules for ESLint, migrated from [eslint core](https://github.com/eslint/eslint).
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JavaScript
import { c as createRule, f as isClosingParenToken, e as isOpeningParenToken } from '../utils.js';
import 'eslint-visitor-keys';
import 'espree';
var newParens = createRule({
name: "new-parens",
package: "js",
meta: {
type: "layout",
docs: {
description: "Enforce or disallow parentheses when invoking a constructor with no arguments"
},
fixable: "code",
schema: [
{
type: "string",
enum: ["always", "never"]
}
],
messages: {
missing: "Missing '()' invoking a constructor.",
unnecessary: "Unnecessary '()' invoking a constructor with no arguments."
}
},
create(context) {
const options = context.options;
const always = options[0] !== "never";
const sourceCode = context.sourceCode;
return {
NewExpression(node) {
if (node.arguments.length !== 0)
return;
const lastToken = sourceCode.getLastToken(node);
const hasLastParen = lastToken && isClosingParenToken(lastToken);
const tokenBeforeLastToken = sourceCode.getTokenBefore(lastToken);
const hasParens = hasLastParen && isOpeningParenToken(tokenBeforeLastToken) && node.callee.range[1] < node.range[1];
if (always) {
if (!hasParens) {
context.report({
node,
messageId: "missing",
fix: (fixer) => fixer.insertTextAfter(node, "()")
});
}
} else {
if (hasParens) {
context.report({
node,
messageId: "unnecessary",
fix: (fixer) => [
fixer.remove(tokenBeforeLastToken),
fixer.remove(lastToken),
fixer.insertTextBefore(node, "("),
fixer.insertTextAfter(node, ")")
]
});
}
}
}
};
}
});
export { newParens as default };