| /** |
| * @fileoverview Rule to check use of chained assignment expressions |
| * @author Stewart Rand |
| */ |
| |
| "use strict"; |
| |
| |
| //------------------------------------------------------------------------------ |
| // Rule Definition |
| //------------------------------------------------------------------------------ |
| |
| /** @type {import('../shared/types').Rule} */ |
| module.exports = { |
| meta: { |
| type: "suggestion", |
| |
| docs: { |
| description: "disallow use of chained assignment expressions", |
| recommended: false, |
| url: "https://eslint.org/docs/rules/no-multi-assign" |
| }, |
| |
| schema: [{ |
| type: "object", |
| properties: { |
| ignoreNonDeclaration: { |
| type: "boolean", |
| default: false |
| } |
| }, |
| additionalProperties: false |
| }], |
| |
| messages: { |
| unexpectedChain: "Unexpected chained assignment." |
| } |
| }, |
| |
| create(context) { |
| |
| //-------------------------------------------------------------------------- |
| // Public |
| //-------------------------------------------------------------------------- |
| const options = context.options[0] || { |
| ignoreNonDeclaration: false |
| }; |
| const selectors = [ |
| "VariableDeclarator > AssignmentExpression.init", |
| "PropertyDefinition > AssignmentExpression.value" |
| ]; |
| |
| if (!options.ignoreNonDeclaration) { |
| selectors.push("AssignmentExpression > AssignmentExpression.right"); |
| } |
| |
| return { |
| [selectors](node) { |
| context.report({ |
| node, |
| messageId: "unexpectedChain" |
| }); |
| } |
| }; |
| |
| } |
| }; |