/** * @fileoverview Rule to enforce placing object properties on separate lines. * @author Vitor Balocco * @deprecated in ESLint v8.53.0 */ 'use strict'; //------------------------------------------------------------------------------ // Rule Definition //------------------------------------------------------------------------------ /** @type {import('../types').Rule.RuleModule} */ module.exports = { meta: { deprecated: { message: 'Formatting rules are being moved out of ESLint core.', url: 'https://eslint.org/blog/2023/10/deprecating-formatting-rules/', deprecatedSince: '8.53.0', availableUntil: '10.0.0', replacedBy: [ { message: 'ESLint Stylistic now maintains deprecated stylistic core rules.', url: 'https://eslint.style/guide/migration', plugin: { name: '@stylistic/eslint-plugin-js', url: 'https://eslint.style/packages/js', }, rule: { name: 'object-property-newline', url: 'https://eslint.style/rules/js/object-property-newline', }, }, ], }, type: 'layout', docs: { description: 'Enforce placing object properties on separate lines', recommended: false, url: 'https://eslint.org/docs/latest/rules/object-property-newline', }, schema: [ { type: 'object', properties: { allowAllPropertiesOnSameLine: { type: 'boolean', default: false, }, allowMultiplePropertiesPerLine: { // Deprecated type: 'boolean', default: false, }, }, additionalProperties: false, }, ], fixable: 'whitespace', messages: { propertiesOnNewlineAll: "Object properties must go on a new line if they aren't all on the same line.", propertiesOnNewline: 'Object properties must go on a new line.', }, }, create(context) { const allowSameLine = context.options[0] && (context.options[0].allowAllPropertiesOnSameLine || context.options[0].allowMultiplePropertiesPerLine); /* Deprecated */ const messageId = allowSameLine ? 'propertiesOnNewlineAll' : 'propertiesOnNewline'; const sourceCode = context.sourceCode; return { ObjectExpression(node) { if (allowSameLine) { if (node.properties.length > 1) { const firstTokenOfFirstProperty = sourceCode.getFirstToken( node.properties[0] ); const lastTokenOfLastProperty = sourceCode.getLastToken( node.properties.at(-1) ); if ( firstTokenOfFirstProperty.loc.end.line === lastTokenOfLastProperty.loc.start.line ) { // All keys and values are on the same line return; } } } for (let i = 1; i < node.properties.length; i++) { const lastTokenOfPreviousProperty = sourceCode.getLastToken( node.properties[i - 1] ); const firstTokenOfCurrentProperty = sourceCode.getFirstToken( node.properties[i] ); if ( lastTokenOfPreviousProperty.loc.end.line === firstTokenOfCurrentProperty.loc.start.line ) { context.report({ node, loc: firstTokenOfCurrentProperty.loc, messageId, fix(fixer) { const comma = sourceCode.getTokenBefore( firstTokenOfCurrentProperty ); const rangeAfterComma = [ comma.range[1], firstTokenOfCurrentProperty.range[0], ]; // Don't perform a fix if there are any comments between the comma and the next property. if ( sourceCode.text .slice(rangeAfterComma[0], rangeAfterComma[1]) .trim() ) { return null; } return fixer.replaceTextRange(rangeAfterComma, '\n'); }, }); } } }, }; }, };