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