67 lines
2.0 KiB
JavaScript
67 lines
2.0 KiB
JavaScript
'use strict';
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const {checkVueTemplate} = require('./utils/rule.js');
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const {getParenthesizedRange} = require('./utils/parentheses.js');
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const {replaceNodeOrTokenAndSpacesBefore, fixSpaceAroundKeyword} = require('./fix/index.js');
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const isInstanceofToken = token => token.value === 'instanceof' && token.type === 'Keyword';
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const MESSAGE_ID = 'no-instanceof-array';
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const messages = {
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[MESSAGE_ID]: 'Use `Array.isArray()` instead of `instanceof Array`.',
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};
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/** @param {import('eslint').Rule.RuleContext} context */
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const create = context => {
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const {sourceCode} = context;
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return {
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BinaryExpression(node) {
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if (!(
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node.operator === 'instanceof'
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&& node.right.type === 'Identifier'
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&& node.right.name === 'Array'
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)) {
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return;
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}
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const {left, right} = node;
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let tokenStore = sourceCode;
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let instanceofToken = tokenStore.getTokenAfter(left, isInstanceofToken);
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if (!instanceofToken && sourceCode.parserServices.getTemplateBodyTokenStore) {
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tokenStore = sourceCode.parserServices.getTemplateBodyTokenStore();
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instanceofToken = tokenStore.getTokenAfter(left, isInstanceofToken);
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}
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return {
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node: instanceofToken,
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messageId: MESSAGE_ID,
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/** @param {import('eslint').Rule.RuleFixer} fixer */
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* fix(fixer) {
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yield * fixSpaceAroundKeyword(fixer, node, sourceCode);
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const range = getParenthesizedRange(left, tokenStore);
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yield fixer.insertTextBeforeRange(range, 'Array.isArray(');
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yield fixer.insertTextAfterRange(range, ')');
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yield * replaceNodeOrTokenAndSpacesBefore(instanceofToken, '', fixer, sourceCode, tokenStore);
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yield * replaceNodeOrTokenAndSpacesBefore(right, '', fixer, sourceCode, tokenStore);
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},
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};
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},
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};
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};
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/** @type {import('eslint').Rule.RuleModule} */
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module.exports = {
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create: checkVueTemplate(create),
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meta: {
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type: 'suggestion',
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docs: {
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description: 'Require `Array.isArray()` instead of `instanceof Array`.',
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recommended: true,
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},
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fixable: 'code',
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messages,
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},
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};
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