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- /**
- * @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/latest/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"
- });
- }
- };
-
- }
- };
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