headroom/frontend/node_modules/eslint-plugin-svelte/lib/rules/first-attribute-linebreak.js

import { createRule } from '../utils/index.js';
export default createRule('first-attribute-linebreak', {
    meta: {
        docs: {
            description: 'enforce the location of first attribute',
            category: 'Stylistic Issues',
            recommended: false,
            conflictWithPrettier: true
        },
        fixable: 'whitespace',
        schema: [
            {
                type: 'object',
                properties: {
                    multiline: { enum: ['below', 'beside'] },
                    singleline: { enum: ['below', 'beside'] }
                },
                additionalProperties: false
            }
        ],
        messages: {
            expected: 'Expected a linebreak before this attribute.',
            unexpected: 'Expected no linebreak before this attribute.'
        },
        type: 'layout'
    },
    create(context) {
        const multiline = context.options[0]?.multiline || 'below';
        const singleline = context.options[0]?.singleline || 'beside';
        const sourceCode = context.sourceCode;
        /**
         * Report attribute
         */
        function report(firstAttribute, location) {
            context.report({
                node: firstAttribute,
                messageId: location === 'beside' ? 'unexpected' : 'expected',
                fix(fixer) {
                    const prevToken = sourceCode.getTokenBefore(firstAttribute, {
                        includeComments: true
                    });
                    return fixer.replaceTextRange([prevToken.range[1], firstAttribute.range[0]], location === 'beside' ? ' ' : '\n');
                }
            });
        }
        return {
            SvelteStartTag(node) {
                const firstAttribute = node.attributes[0];
                if (!firstAttribute)
                    return;
                const lastAttribute = node.attributes[node.attributes.length - 1];
                const location = firstAttribute.loc.start.line === lastAttribute.loc.end.line ? singleline : multiline;
                if (location === 'beside') {
                    if (node.parent.name.loc.end.line === firstAttribute.loc.start.line) {
                        return;
                    }
                }
                else if (node.parent.name.loc.end.line < firstAttribute.loc.start.line) {
                    return;
                }
                report(firstAttribute, location);
            }
        };
    }
});