67 lines
1.4 KiB
JavaScript
67 lines
1.4 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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