46 lines
1018 B
JavaScript
46 lines
1018 B
JavaScript
'use strict';
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const {matches} = require('./selectors/index.js');
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const MESSAGE_ID = 'no-this-assignment';
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const messages = {
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[MESSAGE_ID]: 'Do not assign `this` to `{{name}}`.',
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};
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const variableDeclaratorSelector = [
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'VariableDeclarator',
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'[init.type="ThisExpression"]',
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'[id.type="Identifier"]',
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].join('');
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const assignmentExpressionSelector = [
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'AssignmentExpression',
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'[right.type="ThisExpression"]',
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'[left.type="Identifier"]',
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].join('');
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const selector = matches([variableDeclaratorSelector, assignmentExpressionSelector]);
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/** @param {import('eslint').Rule.RuleContext} context */
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const create = () => ({
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[selector](node) {
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const variable = node.type === 'AssignmentExpression' ? node.left : node.id;
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return {
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node,
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data: {name: variable.name},
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messageId: MESSAGE_ID,
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};
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},
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});
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/** @type {import('eslint').Rule.RuleModule} */
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module.exports = {
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create,
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meta: {
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type: 'suggestion',
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docs: {
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description: 'Disallow assigning `this` to a variable.',
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},
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messages,
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},
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};
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