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| 1 | +import type { TSESTree } from '@typescript-eslint/types'; |
| 2 | + |
| 3 | +import { createRule } from '../utils/index.js'; |
| 4 | +import type { SuggestionReportDescriptor } from '../types.js'; |
| 5 | + |
| 6 | +export default createRule('no-add-event-listener', { |
| 7 | + meta: { |
| 8 | + docs: { |
| 9 | + description: 'Warns against the use of `addEventListener`', |
| 10 | + category: 'Best Practices', |
| 11 | + recommended: false, |
| 12 | + default: 'warn' |
| 13 | + }, |
| 14 | + hasSuggestions: true, |
| 15 | + schema: [], |
| 16 | + messages: { |
| 17 | + unexpected: |
| 18 | + 'Do not use `addEventListener`. Use the `on` function from `svelte/events` instead.' |
| 19 | + }, |
| 20 | + type: 'suggestion', |
| 21 | + conditions: [ |
| 22 | + { |
| 23 | + svelteVersions: ['5'] |
| 24 | + } |
| 25 | + ] |
| 26 | + }, |
| 27 | + create(context) { |
| 28 | + return { |
| 29 | + CallExpression(node: TSESTree.CallExpression) { |
| 30 | + const { callee, arguments: args } = node; |
| 31 | + let target: string | null = null; |
| 32 | + |
| 33 | + if (args.length !== 2) { |
| 34 | + return; |
| 35 | + } |
| 36 | + |
| 37 | + if ( |
| 38 | + callee.type === 'MemberExpression' && |
| 39 | + callee.property.type === 'Identifier' && |
| 40 | + callee.property.name === 'addEventListener' |
| 41 | + ) { |
| 42 | + target = context.sourceCode.getText(callee.object); |
| 43 | + } else if (callee.type === 'Identifier' && callee.name === 'addEventListener') { |
| 44 | + target = 'window'; |
| 45 | + } |
| 46 | + |
| 47 | + if (target === null) { |
| 48 | + return; |
| 49 | + } |
| 50 | + |
| 51 | + const openParen = context.sourceCode.getTokenAfter(callee); |
| 52 | + const suggest: SuggestionReportDescriptor[] = []; |
| 53 | + |
| 54 | + if (openParen !== null) { |
| 55 | + suggest.push({ |
| 56 | + desc: 'Use `on` from `svelte/events` instead', |
| 57 | + fix(fixer) { |
| 58 | + return [ |
| 59 | + fixer.replaceText(callee, 'on'), |
| 60 | + fixer.insertTextAfter(openParen, `${target}, `) |
| 61 | + ]; |
| 62 | + } |
| 63 | + }); |
| 64 | + } |
| 65 | + |
| 66 | + context.report({ |
| 67 | + node, |
| 68 | + messageId: 'unexpected', |
| 69 | + suggest |
| 70 | + }); |
| 71 | + } |
| 72 | + }; |
| 73 | + } |
| 74 | +}); |
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