40 lines
854 B
JavaScript
40 lines
854 B
JavaScript
'use strict';
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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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function getProblem(variableNode, valueNode) {
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if (
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variableNode.type !== 'Identifier'
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|| valueNode?.type !== 'ThisExpression'
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) {
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return;
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}
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return {
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node: valueNode.parent,
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data: {name: variableNode.name},
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messageId: MESSAGE_ID,
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};
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}
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/** @param {import('eslint').Rule.RuleContext} context */
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const create = context => {
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context.on('VariableDeclarator', node => getProblem(node.id, node.init));
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context.on('AssignmentExpression', node => getProblem(node.left, node.right));
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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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recommended: true,
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},
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messages,
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},
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};
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