@typescript-eslint/eslint-plugin
Version:
TypeScript plugin for ESLint
63 lines (62 loc) • 2.23 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const utils_1 = require("@typescript-eslint/utils");
const ast_utils_1 = require("@typescript-eslint/utils/ast-utils");
const util_1 = require("../util");
exports.default = (0, util_1.createRule)({
name: 'no-array-constructor',
meta: {
type: 'suggestion',
docs: {
description: 'Disallow generic `Array` constructors',
extendsBaseRule: true,
recommended: 'recommended',
},
fixable: 'code',
messages: {
useLiteral: 'The array literal notation [] is preferable.',
},
schema: [],
},
defaultOptions: [],
create(context) {
const sourceCode = context.sourceCode;
function getArgumentsText(node) {
const lastToken = sourceCode.getLastToken(node);
if (lastToken == null || !(0, ast_utils_1.isClosingParenToken)(lastToken)) {
return '';
}
let firstToken = node.callee;
do {
firstToken = sourceCode.getTokenAfter(firstToken);
if (!firstToken || firstToken === lastToken) {
return '';
}
} while (!(0, ast_utils_1.isOpeningParenToken)(firstToken));
return sourceCode.text.slice(firstToken.range[1], lastToken.range[0]);
}
/**
* Disallow construction of dense arrays using the Array constructor
* @param node node to evaluate
*/
function check(node) {
if (node.arguments.length !== 1 &&
node.callee.type === utils_1.AST_NODE_TYPES.Identifier &&
node.callee.name === 'Array' &&
!node.typeArguments) {
context.report({
node,
messageId: 'useLiteral',
fix(fixer) {
const argsText = getArgumentsText(node);
return fixer.replaceText(node, `[${argsText}]`);
},
});
}
}
return {
CallExpression: check,
NewExpression: check,
};
},
});