/** * @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", ); }, }); } } }, }; }, };